Directory of All Active Sailplane Models in the United States (Soaring, May 1964)

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DIRECTORY

OF

ALL

CTIVE SAILPLANE

MODELS

IN THE

UNITED STATES

INTRODUCTION

Soaring is

done

with sailplanes so

most soaring enthusiasts are inter

ested in these machines as

their

means to experience flight

without

applied

power.

The

Soaring Soci

ety of America is pleased to present

this Directory of All Active Sail

plane

Models in the

United

tates.

t is

not intended

to be

another

The World's Sailplanes

but

rather

an identification and comparison

issue

and handy

reference.

The

ob

ject is to give for each sailplane a

photo, basic specifications and per

formance figures, a little informa

tion

about the

design

and

refer

ences indicating

where more

infor

mation may be found.

It

should be

possible to take this issue to

any

U.S. soaring site

and

identify all

sailplanes being flown there.

The statistics are a combination

of those compiled from F Ns

United States Civil Aircraft Regis

ter, dated June 1, 1963,

and

SSA

records. Active to FAA means

having had a periodic inspection

within the

past

five years. Sail

planes known by

SSA

to

have be

come inactive were deleted and

only those

which are

expected to

fly in 1964

are

included.

Those

un

der

construction are not considered

here but

SSA

would

like to learn

of them for future reference.

Economy

of

presentation was a

primary consideration. Where pos

sible, photoengravings used in pre

vious issues were saved for this

purpose.

Even

so,

it

was necessary

to go considerably over budget

for new photoengravings and to

add

enough pages to include all the

sailplane models.

SCHWEIZER AIRCRAFT CORP

•

This company has

become

the

backbone of American soaring

by

producing Over half of the active

sailplanes in this country. Three

Schweizer brothers are responsible

and head the company, Ernest as

president and

designer

of the

sail

planes, Paul as V-P, and William.

Model designations

are

ex

plained

as follows: for

the

example

of SGU 2-22, the first letter stands

MAY 964

by LLOYD M.

LICHER,

Editor

t

would be

appreciated i

any

errors

or

omissions

noted

would

be

called to

the attention of SSA

so

file information could

be corrected

and rectification

made,

i

appropri

ate. Information on new sailplanes

becoming

active in

the

U.S. in

the

future will be printed in subsequent

issues as it is received.

Finally, collective thanks are ex

tended

to all those

who

responded

to our solicitation of information

for this issue. Their co-operation

made it possible.

THE AVERAGE SAILPLANE

For

purposes of

description

it

will be useful to

define

here the

average sailplane, general char

acteristics

which

apply to most of

the sailplanes, departures from

which

will

be

noted for specific

models if not obvious from the

photo.

The average

sailplane is

single-place, has two-piece, full

cantilever wings (no struts) of ta

pered planform, a conventiona l

empennage

or tail (separate verti

cal and horizontal

surfaces) with

fixed fin and stabilizer, spoilers,

and a fixed wheel aft of a skid for

the undercarriage.

A

TC

will signify

the model has

an Approved Type

Certificate, and EXP.

means

li

censed in the experimental cate

gory.

STATISTICS

There are very close to 760 ac

tive sailplanes in

the

U.S.

at

this

time, plus

an estimated

100 inactive

and another 140 under construc

tion, making a total of 1000. All

the active Schweizer models num

ber

400,

more

than half

of

those

flying. Active Schweizer I-26's

BOX 147. ELMIRA. N. Y 14902

for Schweizer, the second letter is

for type of aircraft

(Glider), the

third

letter is for type of glider

( Utility; S indicates sailplane), the

first digit is for the number of

seats,

and

the last

number

is for

the consecutive design.

Numbered

designs no

longer

active include a

primary glider built in 1930, a num

her of

utility gliders built in the

30's, some

cargo and troop

trans

port gliders huilt during

the

war,

number 175, or 23 of the 750 ac

tive ships. Models

with

10

or

more

flying are as follows:

Schweizer 1-26 .___ 115

Schweizer 2-22

(all

models) 72

L-K . .

..

61

Schweizer 1-23 (all

models)

56

Schweizer TG-3A .41

Ka-6 . ... 37

R

24

Schweizer TG-2 23 -

Schweizer 1-19 22

Ka - 8B . .. . 19

Cherokee II _____________

17

Bowlus Baby 16

Briegleb BG-12 _ .. . 15

Ka-7 .........

_

_ 14

Another 28 models have two or

more copies flying and

there

are

66 one-of-a-kinds.

The

total

num

ber

of

different

models is

then

108.

PRESENTATION

In general,

the

models will

be

presented in the order of

their

quantity,

with some deviations to

keep all those of one manufacturer

or designer

together.

The

order will

be,

approximately, as follows:

Schweizer, Schleicher, other U.S.

models with two or more flying,

all

other

foreign models, flying

wings,

and

other U.S. one-of

a-kinds.

REFERENCES

References where further infor

mation on

a model

may be

found

will

be coded

as follows:

The World's Sailplanes, Vol. I

______________

\VS-I

The

World's Sailplanes, Vol. II

____________ WS-II

oaring magazine

_____

month(s)-year

page .... p.

CHEMUNG

COUNTY AIRPORTJ

and

27, 28,

.30

and 31

are recent

powered airplane designs.

Blocks of

aircraft

registration

numbers have been assigned to

the

company by FAA from time to

time and most

of

the 1-19's, earl

2-22's,

and

early I-23's are

in

91800-91899 range.

Then

followed

the 3800A-3900A range, which in

cludes most of the early I-20's,

some 8600R's, 10300's and 270f'11.'s.

5



SCHWEIZER SGU 1-7

N23026

SPECIFICATIONS

Span

• 36 H.

Area 133.5sq.H.

Aspect

ratio

9.6

Airfoi l . . . . . . •

NACA

2415

Empty weight

243

lb.

Payload. . . 180 ,lb.

Gross weight. 423

lb.

Wing loading

, 3.2

Ib.lsq.

H.

Structure: metal/fabric,

I-spar,

constant

chord, I-strut-braced wings; metal/fabric

tail, steel-tube/fabric fuselage.

PERFORMANCE

L/D max ..

. .17.5 @ 45 mph

Min. sink 3.5 fps @ 40 mph

6 fps sink

@

50

mph

The 1-7

is

like a scaled-down

2-22 although

it is part of the 2-22's lineage. Two were

built in 1937 but the one pictured is the

only one left . be e a use

the other

one

was

chopped up for iunk by someone

who

didn't

Phofo

y Laurence

Eccles.ton

know what it was

I

Owners

are Chip

and

Pete

Burr

and

Don

Pedigo

who

base

it

at Named

"Pterodactyl"

(Alley Oop riding

one

Tehachapi, Calif. White

with yellow trim.

decorates the rudder). EXP.

Photo by S.

A.

Aldol

Twelve two-place 2-8's were

built

from 1938

'ferred to as TG-2's, remaining in

demand

to

VVW

II and then 45 military versions

on the

used

market.

ATC.

(the army TG-2 and Navy LNS-I)

were

Holds national 2-place

distance

record

of

built.

Sold surplus later,

they

are still re-

309.678 mi. set by Did.- Johnson in 1946.

SCHWEIZER

S S

2-8

TG-2

SPECIFICATIONS

Span 52 H.

Area 214 sq.

H.

Aspect

ratio.

12.6

Airfoil

NACA 4412

Empty weight 450 lb.

Payload

410 lb.

Gross weight

860

lb.

Wing

loading .4.0

Ib.lsq.

ft.

Structure: metal/fabric, I-spar,

I-strut

braced

wings; metal/fabric

tail; steel

tube/fabric fuselage.

PERFORMANCE

L/D

max.

Min. sink

6

fps sink

@

2.7

23

@

42 mph

5 fps @ 40

mph

68

mph

OTHER

No. built . .57

No. still

active.

23

References: WS-I p. 1 84; I 1-38 p. 4, detailed

description; N-D 46, p. 10, record flight

described;

J-A 58, po 25, descri,ption,

specs

SCHWEIZER SGS 2-12

TG-3A

SPECIFICATIONS

Span

54

ft.

Area 237 sq. ft.

Aspect

ratio

12.3

Airfoil

NACA 4416

Empty

weight

.860 lb.

Payload

340 lb.

Gross weight

1200

lb.

Wing loading

5.05 Ib.lsq.

ft.

Structure: wood/fabric

wings

and

tail,

steel


PERFORMANCE

L/D

max.

24

@

52

mph

Min. sink

3

fps @ 45

mph

6

fps

sink

@

72 mph

OTHER

No.

built

114

No. still active

4

References:

WS-I,

p. 185:

M-J 44,

p. 8,

rt -

cle,

specs, 3-view .

Holds

national 2-place

feminie

altitude gain

record of 10,797 ft. set by Betsy

Wood

ward.

Photo by Monte Adkins

Des'igned

as a two-place military

trainer

in

owners may

purchase

copies of

the

military

1942, three XTG-3', were

built

and then the

manuals

(flight

operating,

erection and

nose was

I'engthened

for the TG-3A version.

maintenance, and repair

instructions)

from

They have

been

active in

the

used sailplane

SSA

for

25f/set . Spoilers on top and

bottom

market

after being sold as surplus.

TG-3A

of

wings. ATC.

SOARING



Photo by de Perine

First flew in 1946. A long-wing version of

the

1-19.

Plan' were offered for

the

new

wings and

canopy

but only one (N2708A,

now owned by

David

Welle, of E lmira, N.Y.)

SCHWEIZER S S 1·21

SPECIFICATIONS

SCHWEIZER SGU 1·19

SPECIFICATIONS

Span

36 ft.

Area .170 sq. ft.

Aspect

ratio 7.9

Airfoil NACA 43012A

Empty

weight. .320 lb.

Payload 230 lb.

Gross weight 550

lb.

Wing

loading 3.25 Ib.lsq. ft.

Structure: wood/fabric,

2-spar, constant

chord,

2-strut-braced

wings;

metal/fabric

tail;

steel-tube/fabric fuselage.

PERFORMANCE

UD max.

16@42mph

Min. sink

.3.5 fp, @ 35

mph

6 fps sink @ 58 mph

OTHER

No. built

.50

No.

still

active

22

References: WS-I, p. 185; S-O 44, p. 10 arti

cle,

'pee

3-view; N-D 52, p. 6, Miss.

State 'ow

drag

version, curve,.

Span

51 ft.

Area .165

'q.

ft.

A,pect ratio

15.75

Airfoil,

NACA 23012,

43012A, 23009

Empty

weight

470 lb.

Payload

..

250

lb.

Gross weight

.720 lb.

Wing loading

4.36

Ib.l

'q .

ft.

Structure:

all-metal,

,ome fabric on tail and

T.E. of wing.

PERFORMANCE

L/D max

7 @ 50

mph

Min. ,ink 2.5

fp,

@

45 mph

6

fps

ink @

75 mph

OTHER

No. built 2

No. still active 2

References: WS-I, p. 178; S-O 46, p. 8 arti

cle, 3-view,

performance;

M-J 48, p. 2

article from AIR TRAILS.

Built in 1947, won

the National,

that

year

flown by Dick Comey,

and

again in 1957

flown by Stan SmHh of Newark, Del., who

still owns N91856. Bob Moore of Richland,

Wash., owns

the

other one,

N91861. in

which he earned his Dia.

badge.

Comey's

300 miles in 1947 wa' a

National

distance

record at the time. No market at $3600

MAY 1964

Photo

by

Robert Lee Moore

First flew in 1944. Produced with open cock

his 1-19; he soared it 190 mi. for

Gold di,t. l

pit but

many owners have

added

canopie,.

Dia.

g,,.I,

fljght de'cription

ref.

7-62, p. 6.

Picture i, Jim Hard of Richl and,

Wa,h.,

in ATC.

in the

U.S.

wa,

modified besides

the factory

prototype

I

N91840, now owned by Gene

Breeden

of

Yineland, N.J.). Some Canadians

price in 1947 so a simpler model, the 1-23,

was produced instead.

Smith's

was modified

to lower the ,eat

and canopy.

fOeatures

SCHWEIZER SGU 1·20

SPECIFICATIONS

Span 43 ft.

Area

182

sq.

ft.

A'pect

ratio

10.15

Airfoil NACA 43012A

Empty weight . .400 lb.

Payload 230 lb.

Gross

weight

630 lb.

Wing

loading

3.5 Ib.l,q. ft.

Structure:

wood/fabric,

2-spar, 2-strut-braced

wing,;

metal/fabric tail; steel-tube/fabric

fuselage.

PERFORMANCE

L/D max

.18.5 @ 42

mph

Min. ,ink 3 fps @ 35 mph

6

fps

sink @

60 mph

OTHER

No. built

2

No. still

active

2

References: WS-I. p.

185; N-D 48, p.

i. ad

vertisement

converted

one,

also (ref. 7-60, p. 12).

One

wa'

flown 138 miles in 1947. EXP.

Photo by Rudy Allemann

triple

spoilers (2 on

top,

I on

bottom of

each wing) and water ballast tanks (266

lb.) in wings. EXP.

7



The 2-22 was

introduced

in 1945

and

has

since become the most-used two-place

trainer in

America.

It has been developed

through

A, B.

C.

D

and

E models.

the

E

now in production. 51 standards were built

with 450-lb.

empty

weight and 830-lb.

gross.

The A was a redesign for the Air Academy;

nose lengthened. full canopy, 900-lb.

gross,

3 built. The B is

a

standard modified

for

900-lb.

gross.

The C (pictured) was a pro

duction

model

incorporating

A

and

B

changes plus smaller ailerons; 103 built, in

cluding 28 kits. The D is a standard modified

SCHWEIZER

S S

1-23

SPECIFICATIONS

Span

43.83 ft.

Area

149 sq. ft.

Aspect

ratio

.12.88

Airfoil

NACA 43012A, 23009

Empty weight

385 lb.

Payload

.275

lb.

Gross

weight

660 lb.

Wing

loading

4.43 Ib./sq. ft.

Structure:

all-metal.

P(;RFORMANCE

U

max

.27 @ 45 mph

Min. sink

2.3

fps

@ 40 mph

6-fps sink @

8 0 mph

OTHER

No.

built .20

No. ,till active (in U.S.). 14

References: WS-I. p. 178: S-O 48. p. 8. arti

cle, curves, 3-view.

The

standard

1-23 (ATC) introduced in

1948, and its later versions. the H C. D

E

F G

and

H.

has become America's most

numerous performance

sailplane.

A standard,

flown by Bill Ivans. for 10 years held the

wor ld altitude records of 42, 100/30, 00

ft.

-for small ailerons. The E is the latest pro

duction

model with larger spoilers, roomier

cockpit. new

canopy and

wing root change

to

provide for

skylight:

33 built

so far.

in

cluding 4 kits. The number still active in the

U.S. is probably

somewhat

more

than the

72 indicated

but

much

of

the

difference be

tween that and the 190

built represent

units

built

for

the

Air

Force

at

taxpayer expense

as foreign aid'

for

Indonesia. Also.

Cana

dian clubs

have some

and

a few are in

other countries

such

as

Argentina.

Australia

and Sweden. A

TC.

Paul Bikle

owned

a standard. N91877,

and

extended the wing

tips (ref.

J-F 55. p. 14).

Only one

B

N91880 (EXP.), a long.wing

SCHWEIZER

S U

2-22E

SPECIFICATIONS

Span . .43 H

Area

210 sq. ft.

Aspect

ratio

8.61

Airfoil NACA 43012A

Empty weight .470 lb.

Payload .430 lb.

Gross weight 900

lb.

Wing loading

4.8

Ib.lsq.

ft.

Structure:

metal/fabric. I-spar.

constant

chord, I-strut-braced

wings;

m'etal/fabric

tail; steel-tube/fabric

fuselage.

PERFORMANCE

L/D max (solo)

17@47mph

Min. sink

3.5 fps @ 37 mph

6·fps

sink @

58 mph

OTHER

No. built

.190

No. still active (in U.S.)

72

References: WS·I. p. 186;

M-A

46. p. 12.

article. 3-view.

Price: $3695; uncovered. $2895;

kit.

$2950;

dry

kit.

$2795.

standard. was built. and only one C. N91881

(EXP.), a long-wing with heavier skins and

spar.

Photo by

Emil

Lehecka

In

1953 the 1-23D

(ATC)

was introduced. a

production

version

of

an

improved B One

flown by Paul MacCready, Jr

..

won the 1953

Nationals.

and another

was flown 455.5 mi.

by

Joe

Lincoln

to

earn the Barringer

Trophy

or 1960.

One E.

N91893 (EXP.). a

long

wing D with balanced spoiler/dive brakes,

was

built in

1954

and

hold s

the current

world altitude records of 46.267/42.303 ft.,

flown by Paul Bikle. It is now owned by the

Antelope Valley Soaring Club.

One F.

N91897

(EXP.L

was built. a heavy-skin. butt

skin-joint E. now owned by Ted Pfeiffer

of

Ridgewood,

N.Y.

SCHWEIZER SGS 1·23D

SPECIFICATIONS

Span

.50

ft.

Area

160.6

sq.

ft.

Aspect

ratio

15.58

Airfoil ..

NACA

43012A, 23009

Empty weight

,

.465

lb.

Payload 285 lib.

Gross

weight

750 lb.

Wing loading

4.67 Ib.lsq. ft.

Structure: all-metal.

PERFORMANCE

U

max

30

@ 48 mph

Min. sink . .

2 fps @ 36

mph

6-fps sink @ .

,82

mp

OTHER

No. built 12

No. still active (in U.S.)

.10

References: WS-I. p. 178.

S O R I N G



SCHWEIZER S S 1-23G

SCHWEIZER SGS 1-23H

SPECIFICATIONS

Span

52.8 ft.

Area

. 164 sq. ft.

Aspect

ratio

16.9

Airfoil

NACA

430,12A, 23009

Empty

weight.

479 lb.

Payload

271 lb.

Gross

weight

750 lb.

Wing

loading

.4.56 Ib.lsq.

ft.

Structure:

all-metal.

PERFORMANCE

LID max

31@46mph

Min sink

1.95 fps @

40 mph

b-fps

sink

@

83

mph

OTHER

No. built

8

G's,

7

H',

No. still active

8

G's,

6 H's

References: WS-lI, p. 234.

Price $6495; primed only,

no

instruments or

extras, $6195.

SCHWEIZER S S 1-23H-15

SPECIFICATIONS

Span

49.17 ft.

Area

159.4

sq.

ft.

Aspect ratio

15.12

Airfoil

NACA 43012A,

23009

Empty

weight

.470 lb.

Payload

280 lb.

Gross weight

750 lb.

Wing

loading

4.70 Ib.lsq.

ft.

Structure: a!l-metal.

PERFORMANCE

LID max

29 @ 50

mph

Min. sink

2.2 fps @

37

mph

6-fps sink @

85

mph

OTHER

No.

built

. 15

No. still

active

15

References: WS-II, p, 235.

Price: $6195; primed only, no instruments

or extras, $5895.

Photo

by

Oita

Aldott

The 1-23G IATC) was a 1954

production

model with

the

longer wing of the E and F

make up the current production H (ATC)

and

a larger vertical tail of slightly

different

model. The

H-15

(ATCl is an H with the

shape. Other minor

changes,

including re

wing

tips removed and

is an FA/laSTlY

movable

winq tips and

balanced

dive brakes,

Standard

Class

sailplane.

Photo

by Matt Hoffmann

Pictured here is

the

one

standard 1-23

that

Calif., who have it for sale. However,

has

been flat-topped, N91870, now

owned

Schweizer does

not

encourage such modifi·

by John WiliiamslHelen Dick of San Diego,

cations.

Photo by Nathan Frank

The 1-24 was a spare-time co-operative

owns it.

Mode Gold

dist.lDia.

goal

on first

project

between Schweizer and

Howie

Burr

x-C. It -features a straight-tapered wing with

when he worked for

the company in

1953.

dive brakes. White with Daygl'o vertical tail.

He lives in Glendale,

Calif.,

now and still

EXP.

SCHWEIZER SGS 1-24

N91888

SPECIFICATIONS

Span 55,5 ft.

Area

180

sq.

ft.

Aspect r ~ t

17.10

.6,idoil

.

NACA

430

12A,

23009

Empty

weight 585

lb.

Payload

.200

lb.

Gross weight

785 lb.

Wing loading

.4.35 Ib.lsq. ft.


PERFORMANCE

LID

max

30@50mph

Min. sink

.2

fps

@

46 mph

6-fps sink @

83 mph

OTHER

Designers

.. Howard

Burr, Ernest Schweizer

References: WS-I, p. 180; S-O 53, p. 20.

SCHWEIZER SGS 2-25

N91892

SPECIFICATIONS

Span.

.

60

ft.

Area

.

231

sq.

ft.

Aspect ratio

.15.88

Airfoil

NACA 430 12A

Empty weight

734

lb.

Payload

386

lb.

Gross weight

1120 lb.

Wing loading

4.85

Ib.lsq.

ft.

Structure:

all-metal.

PERFORMANCE

LI max

(solo) .30

@ 46

mph

Min. sink

(solo)

1.95

fps

@ 34

mph

.

6-fps sink @ (solo) 83 mph

OTHER

References: WS·I, p. 181; M·A 55, p.

2,

article curves specs.

One two-place 2-25 was built in 1954 but

MAY 964

the

market

did

not

warrant producing it in weight 1450 lb.,

increasing

the LID max. to

quantity. Now owned by

George

Arents, Jr.,

32 @

65

mph.

Triple

spoilers (2 on top,

of

Miami, Fla., who has

added

weights to

I on bottom of each wing). Dark

blue

with

make

the

empty weight 1050 Ib, and

gross

silver trim. EXP.

9



SCHWEIZER SGS 1-26

SPECIFICATIONS

Span .40 ft.

Area . 160 sq.

ft.

Aspect ratio

10

Airfoil NACA 43012A

Empty weight .355

lb.

Payload .220

lb.

Gross

weight

575 lb.

Wing loading

3.59

Ib.lsq.

ft.

Structure' metal/fabric wings and tail, steel

tube/fabric

fuselage.

PERFORMANCE

LID max

23 @ 49 m ph

Min. sink

2.7 fps @ 40 mph

6-fps

sink @

74 mph

OTHER

No. built

252

No.

now

active

(in U.S.)

,173

References: WS-I, p.

180;

M-A

54,

p.

23,

report; S-O

54, p. 30,

article;

M-J 56,

p. b

progress

reporI; N-D 55, p. 22, first

Regatta

story;

M-A

57, p.

2 article on

constructing

a kit; 11-62, article on quick

assembly; 10-63,

,alu'fe to the design,

long

flight stories, Regatta.

Price: $3595;

uncovered,

$2745;

kit,

$2395;

dry $2295.

By

far

the most popular and

numerous

sail

plane in America today

(23%

of

total

active), the

1-26 has. since 1954,

introduced

a

significant

one-design

concept.

Nurtured

by a formal 1-26

Association, the design

pr mises to con tinue

growing

in popularity

and provide

a ,ignificant percentage

of

the

soaring

done

in America. The 1-26 holds

the

hoto

by

David Bowers

national feminine

distance

and goal records

of

273.28

and

96.4

mi., set by

Rose Marie

Licher (ref. 10-63,

p. 6) and Jean

Arnold,

respectively. Wally Scott

flew

one 443.5

mi.

(ref.

10-63, p.

15). The difference between

the

252

produced and the

173 now

active

in

the U.S. is accounted

for by

kits

being

finished by buyers, 1 in Ecuador, 12 in Can

ada, 30 in Indonesia (more

of

that foreign

aid at taxpayer expense), and a few de

stroyed. Schweizer

designates

four models,

the standard as factory completed (22

built), the A as standard kits (114 built),

the

B as

factory

completed with wings all

metal

covered increasing empty

and gross

weights

by 25 lb.

each

(87

built),

and the

C as kit B s (29

built).

ATC.

The

one

odd 1-26, N3883A is pictured

here. for identification purposes,

with its

original

owner, Dave

McNay,

who

had it

flat-topped (ref. N D 58, p. 2, curves, X-C

chart). It

is

now owned by O. DeV.ughn

North of Westminster, Calif. Schweizer does

not encourage such modifications and they

are not recognized by

the

1-26

Association.

SCHWEIZER S S 2·32

SPECIFICATIONS

Span

,57

ft .

Area

. . 180 sq. ft.

Aspect ratio

18.05

Airfoil

NACA 63(3)-618, 43012A

Empty

weight

831 lb.

Payload

509 lb.

Gross

weight

.1340 lb.

Wing loading

7.4 Ib.lsq. ft.


PERFORMANCE

LID

max

(solo)

33 @ 52 mph

Min. sink (solo) ,2 fps @

46 mph

6-fps sink @ {solo} .89 mph

OTHER

No.

built.

2

No. still

active.

.2

References:

WS-II,

p. 237; 4-62, p. 10, 3

view report

Price: $7995.

The

latest model being produced

by

Schwei features dive

brakes

and an all-moving

hori

zer

is

the 2-1/2-place

2-32, which first flew

zontal tail

with anti-balance

tab.

Kits will be

in 1962. Initial production

rate

will be limo.

made available

at

a later date for about

the first to be delivered in May, 1964. It $5900. ATC.

SOARING



Only one 1-29 was built in 1958 and it is

still owned

by

Schweizer. It consists

of

a

modified 1-23<7

fuselage and

tail with the

addition of

a constant-chord, laminar-flow

airfoil wing with

balanced dive

brakes.

The

wing ri s are identical

made

from

one

mas-

Photo y Rose

Marie

Licher

ter die

to help insure laminar flow. Flush,

countersunk rivets. Heavy, deep

spar

to re

duce

elastic wing deflections and' minimize

skin

oil-canning. Possibility

for addition

of

tapered

wing

tips bringing L/D max. to 40.

EXP.

SCHWEIZER

SGS

1-29

N3898A

SPECIFICATIONS

Span

.49.2 ft.

Area

153.8

sq.

ft.

Aspect

ratio

15.75

Airfoil

. NACA

63-618

Empty

weight

.495 lb.

Payload

255 lb.

Gross weight

750 lb.

Wing loading

4.87

Ib.lsq.

ft.


PERFORMANCE

L/ D

max

34 @

52

mph

Min. sink

.2.05

fps

@ 43 mph

6-fps sink

@

86 mph

FLUGZEUGBAU A. SCHLEICHER

U.S. Agent: Rudolph Mozer. 3270 Kernway Ct., Bloomfield Hills. Mich. 48013

SCHLEICHER Ka-6CR

SPECIFICATIONS

Span 49.2 ft.

Area 134

sq. ft.

Aspect ratio .18. '

Airfoil NACA 63-618


Payload 250 lb.

Gross weigH

670

lb.

Wing

loading

5 Ib.lsq.

ft.

Structure:

all-wood with some

fabric on T.E.'s

PERFORMANCE

LID

max

31.5 @ 50 mph

Min. sink

2 fps @ 42 mph

6-fps

sink

@

84 mph

OTHER

Dssigner

Rudolf Kaiser

No.

built

in

Germany

over

500

No. active in the U.S.

29 CR's 8 BR's

References: WS-I,

p.

81.

Standard

Class

introduced

at

the

1958 ·from

Germany

to France to set

the

current

Price:

$4320 F.O.B. Detroit,

Mich.

World' Championships, placing 3rd, but win world

distance

record.

The one Ka-6 in

the

ning

the

OSTIV

Prize for the best Standard U. S.

that

had no wheel has h"d one in

Class design entered. Heinz Huth of Ger stalled, making it a

BR The

CR

has

more

The German

Schleicher

Ka-6 series

has

be

many won in

the Standard

Class at

the

1960 of

the

wing covered with plywood and in

come

world

famous for its accomplishments

and

1963 World Championships flying corporates other minor improvements. Dive

and

good

performance at reasonable

price.

Ka-6's. Then

in 1963 two

Ka-6's

were flown

brakes

and

quick assembly

are ·featured.

First flown

in

1955,

it qualified

for the

544.3

mi. by Karl

Betzler

and

Otto

Schauble ATC.

The Ka-8B was derived

from

the

Ka-6 as

a good

climbing

ability

in

thermals and good

Standard

Class

sailplane

with

dive brakes

handling characteristics. Four

of

the

21

in

but simplified for amateur construction from

the

U.S. were built from kits. ATC.

kits. Emphasis was on rugged

construction,

SCHLEICHER Ka 8B

SPECIFICATIONS

Span

49.2 ft.

Area .153

sq.

ft.

Aspect ratio 15.9

Airfoil Go 533,

16.7/'0

Empty

weight 418 lb.

Payload 265 lb.

Gross weight 683

lb.

Wing loading 4.45

Ib.lsq.

ft.


wings

and

tail,

steel

tube/fabric

fuselage.

·PERFORMANCE

L/D max

28 @ 45

mph

Min. sink

2.1 fps @ 37 mph

6-fps sink @

.71

mph

OTHER

Designer

Rudolph I«liser

No.

built in Germany

over 200


\

References: WS-II, p. 104.

Price: $4050 F.O.B. Detroit, Mich.: 3 types of

kits available, also.

MAY 1964

II



Phol o

by Ray

Shamblen

The German Schleicher Ka-7 is a popular current

multiplilce

world record for speed

two-place tandem Irainer of good perform around

a 500-km.

triangle,

52.03

mph, set

ance which has dive

brakes.

It

holds

the

in South Africa. A

TC.

SCHLEICHER Ka-7

SPECIFICATIONS

Span

.52.5 ft.

rea ..

. 189

sq. ft.

Aspect

ratio

14.0

Airfoil

Go 533, 10/14%

Empty

weight 010 lb.

Payload

440 lb.

Gross

weight

1050

lb.

Wing loading 5.0

Ib./sq.

ft.

Structure:

wood/fabric

wings and tail, steel


PERFORMANCE

LID

max

20 @

50

mph

Min.

sink

2.3

fps @

42

mph

o-fps

sink @

81 mph

OTHER

Designer

Rudolf Kaiser

No. built in

Germany

over

200

No. active

in

the

U.S.

14

References:

WS-I,

p. 83.

Price: $4700

F.O.B. Detroit, Mich.

OTHER WAR SURPLUS SAILPLANES

LAISTER-KAUFFMANN

LK-l0A

SPECIFICATIONS

Span 50 H

Area

105

sq.

ft.

Aspect ratio

15.1

Airfoil NACA 4418, 4409


Payload

400

lb.

Gross

weight .875 lb.

Wing loading

5.27 Ib'!sq.

ft.

Structure: wood/fabric wing and tail; steel

tube/fabric

fuselage.

PERFORMANCE

L/D max

@ 55

mph

Min. sink

3.2

fps @

45

mph

o-fps

sink

@

.05 mph

OTHER

Designer Jack

Laister

No.

built 150

No.

still

active

.01

References:

WS-II, p. 232; J-F

45,

p.

10,

article. p. 18, 3-view; J-A

48.

p. 10,

arti

cle on flat-topping, curves; J-F 50. p. 9,

article on

flat-top

flight characteristics,

p.

13, 14,

flat-top specs,

3-view

and

curves;

2-00, p. 12, .article

and

photos of

various modifications.

On the right, example of a flat-topped

L-K,

this

one

a

"double-bubble."

The L-K is another

two-place

war surplu;

trainer developed in 1942

as

a civilian de

sign but produced in quantity as TG-4A's

for the military.

The TG-4A's

were

converted

to LK-IOA's

by minor

changes

listed

in the

FAA

spec. sheet.

An STC'd Un;v.

of

III. flat

top

version

is approved

on

the

spec. sheet,

Photo

by Lloyd li e

her

also. The

Flat-top versions have

performance

increased

to

L/D

max.

of

25.5

@ 40 mph,

min. sink of 2.3

fps @

38

mph,

and

o-fps

sink @ b4 mph. A "bunny-nose"

L-K

holds

the National 2-place goal record of 248

mi.,

flown

by

Harold

Hutchinson. ATC.

CORCORAIN TG-1A

CINEMA II

SPECIFICATIONS

Span .40.27

ft.

Area

194.3

sq. ft.

Aspect

ratio

10.7

Airfoil Gottingen 549

Empty weight

500 lb.

Payload

420

lb.

Gross weight 920 lb.

Wing loading

4.7

Ib.!sq.

ft.

Structure:

wood/fabric

wings and tail, steel

tube/fabric

fuselage, I-strut-braced wings.

PERFORMANCE

L/D max

20

Min. sink

.3.2

fps

OTHER

Designer

Stanley

Corcoran

No. built

02

No.

still

active

5

S O R I N G

The

two-place tandem Cinema (II)

was

developed in 1940

from

the

single-place

Cinema 1. Original versions had

small, all

moving tails but the

military TG-I

A's

had

conventional tails.

The few

originals, also

known as

Cinema

B's,

became TG-I C's.

The

Cinemas

were

sold surplus and

a

few

are

still

active. The one

pictured

is

in

Canada

and

that's a photog<apher

standing up

in

the front seat. ATC.

References:

2-38, p. 7,

test

flying Cinema I

(I-place);

S-O 43, p. 3, article, specs, 3

view; 7-00, p. I

I,

article, specs.

12



Photo

by

Malcolm Gamble

The F-R

is another of the

war-spawned

two

place

trainers. It features side-by-side seat

ing.

Navy

designation

was LNE-I,

sold

n

surplus later. It has

Olympia-type

dive

brakes. It has held

the

world

2-placealtitude

records

of

44,255/34,426

ft. since 1952, flown

by Larry Edgar, and Betsy Woodward se t

number

of

current feminine records in

P-R's, as follows: world altitude, 39,993 ft.;

National

alHtude

gain,

27,994 ft.; and Na

tional

2-place distance

and goal, 170.3 mi.

ATC.

References: M-A 42, p. 2, article, 3-view,

specs;

N-D 45, p. 2, article on LNE-I,

specs.

PRATT·READ

PR-Gl

P·R

SPECIFICATIONS

Span .54.5 ft.

Area

.230

sq.

ft.

Aspect

ratio

12.9

Airfoil GS-4, GSM,

GS-I

Empty weight

770

lb.

Payload .380 lb.

Gross

weight

1150 lb.

Wing loading

5 Ib./sq. ft.


wings

and

tail,

wood

aft

fuselage,

steel-tube/fabric forward

fuselage.

PERFORMANCE

L/D

max .. 26

@

52

mph

Min. sink

..

3

fps @

49

mph

6-fps

sink @ 75 mph

OTHER

Designers: M. Gluhareff, P. Leonard, J. Bux-

ton,

R. Stanley, H.

Struck

and R. W.

Gris

wold, II.

No. built .. 75

No.

still active

24

OTHER U.S. DESIGNS IN QUANTITY

SAILPLANE

CORPORATIO'N

OF AMERICA

Box

101,

Adelanto.

Calif.

BRIEGLEB

BG·12A

BRIEGL EB BG·12B

SPECIFICATIONS

Span 50 ft.

Area 141

sq. ft.

Aspect ratio .. 17.7

Airfoil . NACA 4418R,

4406R


Payload 250 lb.

Grossweight 750

lb.

Wing

loading

5.3 Ib./sq.

ft.

Structure: all-w00d.

PERFORMANCE

LID max

34

@

56 mph

Min. sink

2.25

fps @ 47 mph

6-fps sink @

85 mph

OTHER

Designer

William G. Briegleb

No. kits sold

52 A's, 23 B's, IC

No

now active 12 A's, 2 B's, IC

References:

WS-I,

p. 173 (Al; M-J 56, p. 22,

article

on prototype,

curves,

3-view; 4-64,

p. 6,

compar ison tes ting the

B

specs,

photoof

C.

Price:

$4950, custom built; $1900, deluxe kit;

$1675, stanc1ard kit; $850,

"U-build-it";

$125, plans only.

The development of the BG-12 was covered

in

the 4-64 issue, p. 6. A prototype flew

in

1956,

followed

by

the

A model

in

kit

form

with a 15% thick, 3-piece wing. A

2-piece,

Photo by George Uveges

18% thick, lighter wing developed in 1963 is

featured in

the

B kits. Both have flaps on the

center

sect ion for g l ide pa th control. One

C model was built with a

2-piece

wing of

IS-meter spao

with d ive b rakes (no f laps )

to

meet FAI/OSTIV

Standard Class require

ments. The numberof

A's

now active may be

more

than

that

indicated because of recent

completions; Briegleb quotes

28 which no

doubt

includes

some

in

Australia

and

Can

ada.

EXP. (ATC appliedfor).

The BG-6 was introduced in 1939

and

pro

duced

in both

complete

and

kit

form.

It has

no device for g li de p at h control. ATC.

M Y

964

BRIEGLEB BG-6

SPECIFICATIONS

Span

32.25 ft.

Area

I 17

sq.

ft.

Aspect

ratio 8.9

Airfoil

NACA

4412

Empty

weight

235 lb.

Payload

190

lb.

Gro>s

weight

.425 lb.

Wing loading 3.63 Ib./sq. ft.

Structure: 2-strut-braced, 2-spar, constant

chord,

wood/fabric wings; metal/fabric

ta il ; s teel-tu be/fabric

fusel.ge.

PERFORMANCE

LID max 16.5 @ 40 mph

Min. sink

3

fps

@ 35 mph

OTHER

Designer

William G. Briegleb

No.

built

.9 by

factory,

67 kits sold

No. still

active

2

References: WS-I, p. 172; 6-39, p, 10 article,

specs

3



BRIEGLEB BG-7

SPECIFICATIONS

Span

40.25 ft.

Area

123

sq. ft.

Aspect

ratio

13.1

Airfoil NACA 4412


Payload 250

lb.

Gross

weight

500

lb.

Wing loading 4.1 Ib.lsq. ft.

Structure: 2-strut·braced, 2.spar,

wood/

fabric wings; metal/fabric tail;

steel

tube/fabric

fcselage.

PERFORMANCE

L/D

max

20

@ 40

mph

Min. sink 2.9

fps @

36

mph

OTHER

Designer

William

G.

Briegleb

No. built

3

by factory,

20 kits

sold

No.

still

active

4

References:

',,",S-I.

p.

172.

The BG-7 was developed in 1940

by

adding

longer,

tapered

wings

to

the BG-6. It holds

two current

National

feminine

records, set

by

Betsy Woodward, 120A5-mi. G&R,

and

23.M-mph 100-km. triangle. EXP.

The Cherokee

II

was introduced

in

1956

by

Stan

Hall specifically for amateur, home

construction from plans.

It has model

air

plane-type "stick-and-gusset" structure.

Stan

sold 250

sets of

plane before taldng them off

the market. He

indicates

that there may be

Photo

by

Wenatchee Daily World

up to

38 flying now, including 6 in

Canada,

4

in

Austr"lia

and

I

in

New Zealand. EXP.

R2ference5:

WS-I, p. 190; M-A

56, p.

18,

article, specs,

3-view, N-D 56, p. 6, test

pilot

report; 6-63,

p.

20, photo of un

covered structure

HALL CHEROKEE

II

SPECIFICATIONS

Span

40 ft.

Area

125

sq.

ft.

Aspect ratio

12.8

Airfoil

. Gottingen 549

Empty weight

340 lb.

Payload

190 lb.

Gross

weight 530 lb.

Wing

loading

4.23 Ib.lsq. ft.

Structure: wood/fabric; 2-spar

wing.

PERFORMANCE

LID

max

Min. sink

6-fps

sink

@

23

@ 46 mph

2.7

fps

@

42 mph

67

mph

OTHER

Designer

No. siill "ctive

Stanley

Hall

17

BOWLUS B BY ALBATROSS

BA-100

SPECIFICATIONS

Span 44.5 ft.

Area 150 sq. ft.

Aspect

ratio

13.2

Airfoil Gottingen 535 (mod.j


Payload

.205 lb.

Gross

weig ht 505 lb.

Wing loading

3.3 Ib.lsq. ft.

Structure: ' ·strut-braced wood/fabric w i ~ s

wood/fabric

all-moving tail

surfaces;

metal tail boom; wood

pod.

PERFORMANC'E

L/D

maX 20

Min. sink 2.25 fps

OTHER

Designer

. Hawley Bowlus

No. built

.

over

100 kits sold:

No.

still

active .16

References: 4-38, p. 7, article, 3-view; 3-60,

p. 18, article, specs.

The Bowlus

"Baby"

was introd'uced

in

1938

as

an inexpensive

($750 complete, $385

kitl

production design. Kits only

were

produced

by

Bowlus.

I n

1944,

Laister-Kauffmann

bought the rights and ATC but never were

able

to produce

it

as

an all-metal

kit as

planned

before

going

out of

business.

No

spoilers provided for

but

some

were modi

fied by owners

to

add them.

Photo y Pete Bowers

This

one-of-a-kind

auxiliary-powered sailplane

was designed and built

by

Walter Haufe of back when not

running

to close the cowling

Neenah, Wis.,

in 1963.

t

has a

40-HP Nelson

and

reduce

prop drag. Cowl oan be opened

engine

on the

nose that

rotates

80 degrees

for more

drag. Red and

silver. EXP.

HAUFE

ORIGINAL

N1051Z

SPECIFICATIONS

Span

.41

ft.

Area

176

sq. ft.

Aspect ratio

Airfoil

NACA 4415, MI2

Empty weight

476 lb.

Payload

200 lb.

Gross weight

676 lb.

Wing

loading

3.8 Ib.lsq.

ft.

Structure:

wood/fabric

wing and tail, steel


t

PERFORMANCE

LID

max

20 @ 35 mph

Min. sink

3 fps

@

35 mph

SO R ING

9

4



BOWLUS SUPER ALBA1'ROSS

SPECIFICATIONS

Span

_.

44 ft.

Area

123 <q.

ft.

A<pect ratio

15.7

Airfoil

Go 349


Pa00ad 210 lb.

Gro"

weight 645

lb.

Wing loading 5.25 Ib.hq. ft.


wing< and

tail, wood

pod,

metal

tail

boom.

PERFORMANCE

L/D max

29 @ 47 mph

OTHER

De<igner Hawley Bowlu<

No.

built

2

No.

<till

active

2

Reference" M·A

43, p. 3,

article, photo.

Two

Bowlu<

Super

Albatro"e< were built,

N21739

by Hawley Bowlu<, now owned by

Art Milam of Hou<ton, Texa<, and

N33658

Photo by S

A

AldoH

by

Fra k Kel<ey, now owned

by

Herman

all-moving tail

but Stiglmeier'< has a fixed

Stiglme er

of Inglewood,

Calif.

tthi<

one

<tabilizer,

a<

well

a<

<ome f1ap<

that were

is

"ava

lable"). Milam's

wa<

built

with an

added to <upplement

the

<poilers.

EXP.

The

Dragonfly

was

the

first

auxiliary.powered

glider

to be

produced

in

the

U.S. A

develop

ment of

the Ba

by

Albatross

in 1945, the first

version

was called

the

Bumblebee. It features

2-place, side-by-side seating, retractable tri-

NELSON HUMMINGBIRD

PG-185B

SPECIFICATIONS

Span

54

ft.

Area

185

sq. ft.

Aspect ratio

15.76

Airfoil Gottingen 549, 676

Empty weight

800

lb.

Payload

350

lb.

Gross weight

.1150 lb.

Wing loading

6 Ib./sq. ft.

Structul'e: metal, some

labric

on

T.E.'s.

PERFORMANCE

LID

max

.25

@ 55

mph

Min. sink 3

fps @

52

mph

6-fps

sink @

80

mph

OTHER

Designer

.

Harry

Perl

No. built

7

No.

still

active

7

References: WS-I, p. 188; M-J 50, p. 3,

article, specs;

N-D

51, p. 2 article

on

flying;

M·J 55, p. 2,

article I

Pt.

I), specs,

3-view;

J .A

55, p. 25,

article

(Pt.

2);

J-F

56,

p.

7 article

on

flying X-C.

MAY

964

cycle landing gear and' a Nel<on engine. It

has no

devices for glide

path

control. Some

of them have

had

the

engines removed,

con·

verting

them to pure sailplanes. ATC as

auxiliary-powered glider.

NELSON

DRAGONFLY

BB 1

SPECIFICATIONS

Span 47.3

ft.

Area 169.3

sq. ft.

Aspect

ratio . . . . . . . . . . . . 13.2

Airfoil

NACA

4415, 4412

Empty

weight 585

lb.

Payload 355 lib.



Structure: I-strut-braced

wood/fabric

wing<;

wood/fabric tail;

metal

tail

boom;

wood

pod.

PERFORMANCE

L/D

max

18

@

50 mph

Min. <ink 4 fp< @ 47 mph

OTHER

Designer Hawley

Bowlus

No.

built

7

No. still

active

.4

References:

J-F

46,

p. 17, article

on Bumble

bee; M-J 49, p. 2, article on flying.

Ted

Nel<on'<

company developed the

Hum

mingbird

in 1953

after discontinuing the

Dragonfly.

It is a two-place tandem,

high

performance, auxiliary-powered <ail

plane.

The 42-HP Nel<on engine retracts when not

in use,

a< shown

in

the

photo.

Undercarriage

is two wheels

in

tandem, front one steerable

with rudder

pedals. It

feature<

an all-moving

horizontal tail with

anti-balance tab, spoilers

and dive brakes,

and styrofoam-filled

leading

edges. Harry Perl has the

wooden

prototype

and there were six all-metal ones produced

in 1955. A new Nelson Aircraft Co., 1560

Electric

Ave., East Pittsburgh,

Pa. 15112, has

purchased

the manufaduring

and <ales

rights

to ihe Hummingbird and

Nelson H-63 en

gine and plans 10 type certificate and

produce the design. EXP.

5



The prototype Sisu I first flew in 1958 and

featured full-monocoque wing

structure and

camber-changing flaps. Niemi

started

to

produce the IA in Texas, with a lighter wing

structure,

vented dive brakes and sloHed

flaps, then sold out to Astro Corp. and

ioined

them to supervise prod'uction. John

Ryan of Scott.dale, Ariz., has the prototype,

N7983A,

and won the 1962

National

Cham-

Photo by S A.

Aldott

(All

rights reserved)

pionship with it. AI Parker of Odessa, Tex.,

has a IA and flew it 487.24 mi. to set

the

current world

goal

record.

The Sisu is proba

bly

the

highest performance

production

sail

plane

in the

world. It

features a vee tail,

retract.l.le wheel

and

tow

hook. Four lA's

have been delivered and three more have

been completed. EXP. (A TC

pending).

ARLINGTON AIRCRAFT

Div. Astro Corp.

ox

1236,

Greenville.

S.C.

SISU-1A

SPECIFICATIONS

Span

5 \

ft.

Area

. 108 sq.

ft.

Aspect ratio

.23

Airfoil

NACA

65

(3)-418

Empty

weight

480

lb.

Payload

275 lb.

Gross weight

755

lb.

Wing loading

7 Ib./sq. ft.


PERFORMANCE

LI max

40

@

65 mph

Min. sink 2 1 fps

@

55 mph

6-fps sink @

.95

mph

OTHER

Designer Leonard Niemi

No. built 8

No.

still active .8

Reference,; WS-II,

p. 224

(model 'I);

M-A

56, p. 8, article,

curves,

3-view; 2-61, p. 4,

article; 3·61, p. 3, flight test; 6-63, p. 6.

story

of

Dick

Johnson's

441-mi. flight

in

Argentina; ,12-63, a

Sisu issue, photos,

pilot

report, record flight story.

Price: to be determined but over

$10,000.

AIRMATE HP-S

N34Y

SPECIFICATIONS

Span 51.4 ft.

Area

110

sq.

ft.

Aspect

ratio 24

Airfoil NACA 65

(3)-618

Empty

weight 618 lb.

Payload 232 lb.

Gross weiqht 850 lb.

Wing loading

7.3 Ib.lsq. ft.

Structure:

all-metal.

PERFORMANCE

LI max

37

@

67 mph


6-fps sink @

103 mph

OTHER

Designer Richard

Schreder

References:

WS-II, p.

222;

10-59, p. 5,

flight

tests curves.

HELISOAR AIRCRAFT, INC.

ox 603, Danbury, Conn.

HP·10

SPECIFICATIONS

Span .48 ft.

Area 114 sq. ft.

Aspect

ratio

20.2

Airfoil NACA

65

(3)-618

mod.

Empty

weight

535

lb.

Payload

. . 245 lb.

Gross

weig

ht

780

lb.

Wing loading

. .5.9 Ib./sq. ft.

Structure:

all-metal; wing

skins are ~ u m n u m

honeycomb panels.

Dick Schreder designed and built the HP-8

in 1958 and won the Nationals with it that

year

and

again in 1960. He set world

rec

ords

with it

for

all

three speed categories

in

1959,

two

of

which were raised

again by

the

OTHER

Designer Richard'

Schreder,

modified by

Steve duPont.

No. buill

3, plus

13

kits

No. still active

.3

References:

2-6 I, p . 14, article. specs, curves,

3-view.

Price: kit,

$3795

.

The

HP-IO

was developed by Dick

Schreder

who built a prototype and did very well

Photo by Fred Hefty

HP-8

flown by its present

owner, George

Moffat, Jr., of New Brunswick, N.J. (ref.

10-62, p. 10). It features a vee tail, flaps

and retractable

wheel.

All

white.

One-of-a

kind. EXP.

Alton, III. built a

copy,

N25D and has

it for

sa·le now. Helisoar bought the production

rights and is manufacturing kits.

One

has

been

finished.

N319Y, and it is expected

that kit

buyers

will finish another 3

by May,

1964. The constant-chord. aluminum-honey

comb

wing is unique and

the

design

features

34-ft.

span flaps and a vee tail. Wing

tip

extensions are planned

which

will

bring the

span to 50.3

ft.

EXP. (ATC pending).

S O R I N G

with it

in the

1961 Nationals, winning

the

Stroukoff

Trophy for a

35.S-mph

142-mi.

G R.

It

is now owned

by

Bill

Holbrook

of

Cumberland, Md., N6511 D

Joe

Emons of

PERFORMANCE

. 35

@

60 mph

.2.2 fps

@

43 mph (est.)

90

mph (est.)

LI max

Min. sink

6-fps sink

@

16



AIRMATE HP-9

N6505D

SPECIFICATIONS

Span ,48.84 ft.

Area

127.4 sq. ft.

A'pect

ratio , ,

18.1>

Airfoil

,Wortmann FX-191

Empty weight

1>50

lb.

I'ayload

.. 195 lb.

Gross weight

845 lb.

Wing

loading

1>.1>

Ib'/sq.

ft.

Structure: ali-metal.

PERFORMANCE

L/D

max 40 @ 1>2.5 mph

Min. Sink I

no

flap) . .2.21> fps

@

1>0

mph

I>-fps sink

@ 92.5 mph

The one-of-a-kind HP-9 was designed by

Did

Schreder to fly in

the

1 91>0

Internationals

but

it

wa' not completed in

time.

The

present

owner, Bob Litle, Jr., of Ft.

Benning,

Ga.,

Photo by

R. F.

Litle, Jr.

bought it and

'had

it completed in

191>2 by

crease the area to 143.7

' q .

ft. and

reduce

Dave Blanton's Javelin Aircraft Co. It ha, the sink to 2.11 fps @ 47 mph, dive

brakes

an all-moving

tail, Fowler

flaps

which

in-

and

a retractable whee' . Blue

and white.

EXP.

BRYAN AIRCRAFT,

INC.

Bryan hio

AIRMATE HP-ll

N851Z

SPECIFICATIONS

Span

. , , ,

,52

ft.

Area ,104 sq. ft.

Aspect ratio

.21>

Airfoil NACA 1>5 (3)-1>18

Empty

weight

384 lb.

Payload

21 I

lb.

Gross weig ht

.1>00 lb.

Wing loading

5.77

Ib./sq.

ft.

Structure: ali-meta. .

PERFORMANCE

LI D max

37 @ 55 mph

Min.

sink

. ,1 .54

fps

OTHER

Designer

Richard

Schreder

No. built , I

No.

still active

. . . •

I

References: 4-1>2,

p.

1>

article,

specs,

3

view; 2-04, p.

4, article on

selling plans

and 'kits.

Price:

kit wit,h completed

spars, $3500;

kit,

$2795; plans, $150.

Photo by Fred Hefty

Still dreaming

of

the perfect

sailplane,

He later

placed

3rd with it in

the

191>3

lease, are

being

offered,

as

are

parts nd

Schreder turned

out

the HP-II in

191>2 in

World

Champion,hips, including

a 382-mi. kits.

Anum

ber of these have

been

sold and

time for

the

Nationals, in which he placed flight. Plans for an improved version,

the

some

of them should be

completed

by this

3rd and made the

longe,t

flight, 41>9 mi.

HP-II

A, with retractable wheel and tow re- summer. EXP.

MrTCHELL NIMBUS

III

SPECIFICATIONS

Span 41> ft

Area 117 sq. ft.

Aspect ratio 18

Airfoil

Gottingen

549

Empty

weight 450

lb.

Payload ..

200

lb .

Gross weight

. . 1>50 lb.

Wing

loading 5.1> Ib./sq.

ft

Structure: all.wood,

some

fabric on T.E.'s

FERFOItMANCE

LI max

32 @

1>0

mph

Min. sink

2.5

fp,

@

45.8

mph

I>-fps sink

@ 88

mph

OTHER

Designer

Don

Mitchell

No.

built 4,

plus

5 under construction

No. still active , .4

References: M-J 51>, p. 17, article.

MAY

1964

Don Mitchell

developed

the Nimbus III in

r

951>

from earlier I and II

models. He

produced

nine

kits, of which four have

been

completed,

as follows: N81 71 H, owned

by

tho

Sacramento

(Calif.) Soaring Club;

N63494,

a B model

by

Ed Blalock of Reno,

Photo by S. A. Aldott

Nev.;

N7793B by

Jim Sand, of Houston, Tex.

tpictured): and

N7804C, owned by

Enno

Pechnik of Fairfield, Calif. The last ones

started have a

laminar

FX-05-191 airfoil.

All-moving tail,

3-piece wing.

EXP.

17



Photo

by

Lloyd Licher

One Prlle 160 was built by Irv

Prue

in 1945

and is now owned by K Gutowski of San

Diego, CaM. It

features

a vee tail,

mag

nesium skins ribs and spar webs external

airfoil

Raps,

and the forward fuselage is

made from a P-38

drop

tank. White. EXP.

PRUE 215

SPECIFICATIONS

Span

40

ft.

Area

90 sq. ft.

Aspect ratio

20

Airfoil NACA

23012,8318

Empty

weight

340 lb.

Payload 200 lb.

Gross weight .

540

lb.

Wind loading

6 Ib./sq. ft.

Structure:

ail-metal.

PERFORMANCE

t iD

max

28.6

@ 52 mph


6-fp,

@ .

.75

mph

OTHER

Designer

Irving Prue

No. built

3

No. still active

2

References: N-D

48, p. 8, article, 3-view.

OTHER

Designer Irving Prue

References: M-J

47, p. 14, article, specs; J-A

48,

p. 7,

article

on

Raps;

N-D <8, p. 8,

article.

PRUE 160

N90614

SPECIFICATIONS

Span

40

ft.

Area

. .

80 sq

ft

Aspect

ratio

20

Airfoil

NACA 0018 to 0009

Empty weight

..

160 lb.

Payload

200 lb.

Gross weight

360 lb.

Wing loading

4.5

lb./sq.

ft.

Structure: dll-metal.

PERFORMANCE

LI md

26 @ 52 mph

Min.

sink

2.8 fps

@

40 mph

6-fps sink

@

72 mph

Prue

developed

the 215 in 1949. The one

pictured, N90612, is now

owned by

Ma.

Dreher

of

Santa

Monica, Calif., who

is

experimenting

with mounting a

iet engine

on it. Harold Hutchinson flew it to 2nd

place in

the

1958 Nationals. The

other

215,

N454Y,

an

A model,

is

owned by Col.

H.

Godman

of Holloman AFB, N.M., and is for

sale. The d9Sign features a vee tail

and

re

tractable wheel.

External airfoil flaps were

originally

installed for

glide path

control.

EXP.

Photo by Paul

Heasley

OTHER

he Prue Two

is

a

large, two-place,

high

performance sailplane

now owned

by

Ed

Butts of Twin Falls, Idaho. It first flew in

1959. It features

a retractable

wheel and

large

dive brakes. Two more Two s

are near

ing completion

in the Palmdale, Calif., area.

White

wings

and cocoa fuselage. EXP.

Designer . -Irving

Prue

No. built I plus 2 under construction

No. still

active

.. 1

References: WS-II,

p.

220;

M-A 59, p. 12,

pho'o. specs.

PRUE TWO

N7905C

SPECIFICATIONS

Span 64.5

ft.

Area

228 sq.

ft.

Aspect ratio 18.3

Airfoil

NACA 6]

(3)-618,

a= t

Empty

weight .1090

lb.

Payload

510

lb.

Gross weight

1600 lb.

Wing

loading

5.7·7.0 Ib./sq. ft.

Structure: all-metal:

]-piece

wing; fiberglass

nose :ddn.

PERFORMANCE

LI max

]6

@

58

mph


6.fps sink

@

100

mph

PRUE STANDARD

SFECIFICATIONS

Span

49.2 ft.

Area

I 2

1.5 sq.

ft

Aspect ratio

. . . 19.96

Airfoil

.

NACA

63

[3}-618, a=1

Empty

weight .446

lb.

Payload

279

lb.

Gross

weight

. . .

725

lb.

Wing loading

.5-6 Ib./sq.

ft.

Structure: ail-metal,

I-beam for spar.

PERFORMANCE

VD ma. 35

@

56

mph

Min. sink

.2.15

fps @ 44

mph

OTHER

Designer

. .

Irving

Prue

No. built

3

No. still

active

. . 3

References:

7-61, p. 6,

photo, specs;

9-63,

p.

5, description of

557-mi.

Right.

18

Photo y en Jansson

Prue built the fi"t

Standard,

N9726Z in

1961 as an f AI/OSTIV Standard Class sail·

plane.

It is now

owned

by Bud

Mears

of

Redondo

Beach,

Calif.,

who

has extended the

tails,

as evident in the photo. It

has

balanced

dive brakes

on

the lower

wing

surface only.

Paul Bikle of Lancaster, Calif" got

2 ,

N9730Z, which

had a deeper

and

I onger

fuselage and

brakes on

top and bottom.

With

it

he

made

the longest Right ever

made in a sailplane, 557 mi. Bob

Gravance

of Palmdale, Calif., constructed the third

StanClard,

N9728Z.

His brakes

are

on the

bot tom only,

mounted externally, but

his

fuselage is the same as Bikle s.

Work

toward

an

ATC

Vias discontinued in favor of devel

oping

the

Super

Sta'ndard.

Vee tail, no skid.

EXP.

SOARING



PRUE SUPER STANDARD

SPECIFICATIONS

Span

49.2 ft.

Area

121.5

sq.

ft.

Aspect ratio

.19.96

Airfoil NACA 65 (3)-518, a=.7

Empty w"ight

44b lb.

Payload

.. 279 lb.


Wing

I oading .5 b lb. sq.

ft.


PERFORMANCE

L/D

max

35 @

5b

mph

Min. sink 2.15 fps

@

44 mpn

OTHER

Designer Irving Prue

No. built plus 4

under

construction

No. still activ. I

References: 4-63. p. 21.

photo

of dive brakes

on trailing

edge

of wing.

The D-8 was

designed

by Ken

Coward

{of

Wee

Bee. Honey Bee

and

Queen Bee fame}

for

simple

home construction

from plans.

The

first one completed. N5053K, is shown here.

the work of Klaus Hill and associates of

Coalville. Utah. It

features

a

one-piece

wing.

No spoilers. EXP.

FRANKLIN ,PS·2

SPECIFICATIONS

Span

3b

ft.

Area 180 sq. ft.

Aspect

ratio

..

7.2


Payload 180 lb.

Gross

weight 400 lb.

Wing

loading 2.2 Ib./sq. ft.

Structure:

constant chord.

2-spar.

2-strut

braced wood/fabric wings; metal/fabric

tail;

deel-tube/fabric

fuselage.

PERFORMANCE

L/D max

15

Min. sink 2.5 fps

OTHER

Designer R. E. Franklin

No.

still actiH

.4

References: 7-37 p.

b

photo, specs; "Sport

Aviation." 10-61. p. 16. II-bl. p. 29;

"American Airman," 11-61, p. 17.

Photo by Ben Jansson

Developed from

the Standard in 1962.

the

Super Standard went to a

conventional

tail

(to help reduce induced

drag

in circling

flight). 2-seetion canopy, shallower fuse lage,

trailing

edge

dive

brakes, and

a

different

laminar airfoil. The

prototype,

N7773C, has

lhick magnesium wing skins

and

fewer ribs

but subsequent versions are

reverting to

aluminum. Four

more

are being produced

while ATC work is being completed. Further

production

plans are indeterminate.

FAII

OSTIV Standard

Class. No

skid.

EXP.

OTHER

Designer

Ken Coward

No. built

I

No. still

active

1

References:

Interavia.

8 b2.

p. 980.

P rice: plans .

$29.95.

PACIFIC

AIRCRAFT CO.

5942

Avenida

Chamnez:

a Jolla Calif

0-8

SPECIFICATIONS

Span

31.b It.

Area

100

sq.

ft.

Aspect ratio

10

Airfoil

4418

(mod.)

Empty weight

270 lb.

Payload

190

lb.

Gross weight

bO lb.

Wing

loading

.4.b

Ib./sq. ft.

Structure:

all-metal.

PERFORMANCE

LID max

21.5

@ bO

mph

Min. sink

3.5 fps

@

45 mph

b-fps sink

@

77 mph

pictured is awned by Wallace

Muschinske

of Merrill, Wis. No

spoilers.

EXP.

The Franklin was 'he most

popular

utility

glider in the 30's

and a few survive. The one

MARTIN M-l

N21733

SPECIFICATIONS

Span

.48 ft.

Area

180 sq. ft.

Aspect ratio

..

12-8

Empty weight

.438

lb

Payload

.193 lb

Gross weig ht,

.b31

lb

Volmer

Jensen built the M-I

for

Jim Mar

Waggy

of

Ft. Stockton. Tex.

Colored

yellow

Wing Iloading

3.5 Ib./sq. ft.

tin in 1939 and it was entered in a

number

and red. EXP.

Structure: wood/fabric.

of Nationals. some by Emil

Lahecka.

a sub

OTHER

PERFORMANCE

;equent owner. t features a gull wing and

Designer . , .. Volmer Jensen

LID max

25 @ 48

mph

(es

J

is now

for

sale by its present

owner, Gene

References: 5-0 53, p. 2,

photo.

Min. sink

.2.5 fps @ 38 mph

(ed.)

MAY 1964

19



OTHE R FOREIGN·BUILT SAILPLANES IN THE UNITED STATES

SCH

EI

BE·FLUGZEUGBAU

G.M.B.H.

August.Pfaltz Str. 23

806 Dachau. bei Munchen.

West

Germany

L SPATZ 55

SPECIFICATIONS

Span

49.2

ft.

Area

127

sq. ft.

Aspect ratio

19

Airfoil Mu, 14%

Empty weight

341

lb.

Payload

242

lb.

Gross

weight

583

lb.

Wing

loading

.4.6

Ib./sq.ft.

Structure: wood/fabric wings

and

tail, steel

tube/fabric

fuselage

PERFORMANCE

LID

max

.29

@45 mph

Min. sink

2.2

fps

@ 39

mph

6-fps

sir.k @

73 mph

quick assembry.

Arnold Skopil

OTHER

Designer

Egon

Scheibe

No. built in Germany

400

No.

active in the U.S.

7


74

Price: $2275

plus

shipping [air

freight

to

New

York

about

$600)

and 11 12 10 duty.

Photo

by

Eugene Bartos

The L-Spah-55

is

an inexpensive Stand. ,d

Class sailplane developed in 1955

from the

earlier Spatz and

L-Spah.

One was flown

422

mi. in

Germany by Baptist Hofmann.

It

features dive

brakes and very quick assem

bly.

ATC.

The

Bergfalke

II/55

and

its

similar

predeces

sors,

the

Mu-13-E

and Bergfalke II have been

in production

since

195 t The current model

is

designated Bergfalke

III. It features 4

degrees

wing

sweep forward,

dive

brakes and

of Aberdeen.

Photo by Robert Lee Moore

Wash., has installed a retractable 44-HP

Nelson engine

in

the

rear

seat of

his,

N7149C. Specifications

given

are

for the

model III which has increased weights over

the II/55. ATC.

SCHEIBE BERGFALKE II 55

SPECIFICATIONS

Span 54.5 ft.

Area 192.7 sq.

ft.

Aspect ratio 15.6

Empty weight 606

lb.

Payload

..

4 J9 ,lb.



Structure:

wood/fabric wings and tail,

steel


PERFORMANCE

LID max

28

@

50

mph

Min. sink

2.4

fps

@

44 mph

6-fps

sink

@

77

mph

OTHER

Designer

Egon Scheibe

No.

built in Germany.

500


5

References: WS-I,

p.

76; 112-59, p.

18, article

on powered version.

Price: $3225

plus shipping (air freight to

New York about $800) and 11

1

2 /0 duty.

SCHEIBE ZUGVOGEL iliA

SPECIFICATIONS

Span

55.8 ft.

Area ..

156 sq.

ft.

Aspect

ratio

20

Airfoil . NACA 63 (2)-616/614


Payload

254 lb.

Gross weight

805

lb.

Wing loading

5.

J

2

Ib.lsq. ft.

Structure:

'.Vood wings,

wood/fabric tail,

steel-tube/fabric

luselage with fiberglass

Photo by Leslie

Benis

nose covering_

OTHER

Designer

Egon

Scheibe

PERFORMANCE

No. built

in Germany

.100

The

four Zugvogel lilA's

imported to

date

No. active in the 'U.S.

.. .4

are all in

California.

It features dive brakes

LID

max.

37.8

@

58 mph


73.

and quick

assembly. Current production

Min.

sink.

. 2

fps @ 46

mph

Price: $3675 plus shipping

(air

Ireight to

model is desigrated IIIB. EXP. (ATC applied

6-lps

sink

@

. .93 mph

New York

about $800) and

1

2%

duty .

lor) .

S O R I N G

0



SCHEIBE SF-26·STANDARD

SPECIFICATIONS

Span . . 49.2 ft.

Area

. 132.4 ''1. ft.

A.pect

ralio 18.2

Aidoil .NACA

b

215)-blb/bI4

Emply weight

419

lb.

Pay'load . 2b5 lb.

Gr o. .

weight b84 lb.

Wing 10dding ..

5.14 Ib.l.q. ft.

Structure: 3-piece

wood

wing, wood/fabric

tail,

.teel-tube/fabric fu.elage

with

fiber

gla . . n o ~

PERFORMANCE

LID max (@

bl7

lb.) 31.8 @

55

mph

Min . • ink (@

bl7

Ib.l 2.2 fp. @ 4b mph

b-fp• • ink @ (@ bl7 lb.). 8b

mph

OTHER

De.igner

.. Egon

Scheibe

No. built in

Germany

40

No.

active

in the U.S. I

Price: $2725 plus shipping (air freight to

New York about $700) and 11112 /0 duty.

The SF-2b-Standard is Scheibe's

high-per

formance Standard Class sailplane. It has

dive brake•.

Capt.

Howard

Everhart of Still

water,

Okla.,

has imported one, NI151Q,

that is red and yellow.

Photo by S. A.

Aldolt

The Standard Austria was developed in 1959

by the Austrian Aero Club and won the

19bO OSTIV Prize

for

the best Standard

Class design entered in

the

World Cham

pion.hip..

It

is being produced by the

Schempp-Hirth company in W. Germany. It

feature.

an

all-moving vee tail, has d·ive

brakes and is available with a retractable

wheel for Open

Class

com petition. Earlier

ones had an NACA b5(2)-415

airfoil

and

lighter weight. Ben

Greene

of Elizabethtown,

N,C., set a

.hort-lived

world goal

record

of

458 mi. with his, N4b22S,

and

the design

holds Ihe

current

world G&R

record of

434 3b mi. set in South Africa. ATC.

Price:

$4300

plus shipping (air freight to

New York

about

$700) and 12 /0 duty.

SCHEMPP HIRTH KG.

7312 Kirchheim-Teck

West

Germany

STANDARD AUSTRIA

SPECIFICATIONS

Span

. . . .

49 ft.

Area

14b sq. ft.

Aspect ratio . I b 7

Airfoil Eppler

2bb

Empty

weight

535 lb.

i'ayload 237 lb.

Gross

weight 772 lb.

Wing loading . . 5.3 Ib./sq. ft.

Structure:

all-wood, fiberglass nose.

PERFORMANCE

LID

max

34

@ bb mph

Min.

s i n ~

.

.. 2.1 fps @43 mph

b-fps sink @

. , . . .

100mph

OTHER

De.iqner

Rudiger Kunz

No. 'built

abroad . . . .

48

No. active in the U.S. . .10

References:

WS-II, p. 34, 7-bO p. 5,

photo,

specs; 9-b2 p. 5, article, curves,

spec',

photos;

3-M, p. 12, article, curves, specs.

LO-1S0

SPECIFICATIONS

Span

. .

.49 ft.

Area . .

. 117.'1 ' ft.

Aspect

ratio

.20.b

Airfoil .. Clark Y

Empty weight

. . 441 lb.

Payload . . . . . . 242 lb.

Gr o

. .

weight

. .

b83

lb.

Wing

loading

.. 5.8 Ib./sq. ft.

Structure: all-wood.

PERFORMANCE

L/D

max.

.

.34

@

b5

mph

Min. sink

.2.2

fp. @ 53

mph

b-fps sink @

.. 83 mph

Pholo

by S.

A. Aid

olt

OTHER

The Wolf Hirth company

in

Germany prod

De.igner

.Alfred Vogl

uced the LO-150

prior

to

Wolf'. death.

It N

III OV,

435

miles

to win the Barringer

No.

built in Germany 25

has

flaps for

glide path

control.

A. J. Smith Trophy

for 19b2

The other two in the U.S.

No. active in

the

U.S. . . . . . . . . . . .4

won the 19b1 Nationals in one, N33b, now

are

owned by Adolphe Gude of Rockville,

References: WS-I, p. b8; J-F 58, p.

18, de -

owned by

John

Slack

of

Naperville, III. Md.,

N3500G,

and Art John,on/Svend Jen

scription.

Harald Jensen of Elmhu..

t, III.,

flew his, sen of Chicago, III.,

N1015Z.

EXP.

M Y

1964

2



SLINGSBY SKYLARK 3F

SPECIFICATIONS

Span 59.6 ft.

Area

173

sq. ft.

Aspect ratio

20.5

Airfoil NACA 63

(3)

-620,4415

Empty w i h ~ 600 lb.

Payload 230 lb.


Wing

loading

4.8 Ib./sq.

ft.

Structure: all-wood,

some

fabric on T.E.'s.

PERFORMANCE

L/D

max

31 .4@49 .5mph

Min. sink

.• 2.1

fps

@

44

mph

6-fps sink @ 76

mph

OTHER

,fL)esigrier

F.

N.

Slings

by

No.

built in

The Skylark 4 was developed in 1962

from

later versions of the

3,

and has

a new,

shal

lower

( us el ag e a nd o ut er

wing

panels.

It

has a

3-piece

wing, dive brakes

and comes

with either a take-off

dolly

or fixed

wheel.

Dick Johnson won the 1963 Nationals in a

Skylark 4

and

another

one

won the 1963

No.

active

in the

U.S.


108.

The Skylark 3 was introduced in 1955 as a

larger-span

successor to the

Skylark 2. Vari

ous 'etter models of

the 3

followed, the one

owned

by

Photo

by Dave King

Canadian Nationals. Dick Johnson

has

care-

fully

test fI

own his,

N7997

A,

at weight of

COO

lb.

and measured

a min . sink of

1.77

Ips @ ,-2

mph

and

LI

max. of 36.3 @

45.4 mph. He will provide airspeed calibra

tion curves

to oj·her Skylark

4 owners

on

re

quest.

A

TC.

Photo

by

Henry Ditlmer

Dick

Sundquist

of

Castle

Rock,

Colo.

Philip

Wills owned it and flew it in the 1960 Na

tionals.

It has a 3-piece wing,

'dive

brakes

and

a

take-off dolly.

Bob

Klemmedson of

Orinda,

Calif.,

has a 3D, N6295C, and Dick

Cookof Palo

Alto,Calif.,

has a 3F, CF-ZDV.

SLINGSBY

SAILPLANES LTD.

Kirbymoorside, York, England

SKYLARK 4

SPECIFICATIONS

Span .

..59.6 ft.

Area

173 sq. ft.

Aspect

ratio

20.5

Airfoil

NACA

63 (3)-620,6415

Empty

weight

600 lb.

Payload .230

lb.

Gross

weight

.. 830 lb.

Wing loading

4.8 Ib./sq.ft.

Structure: all-wood,

some fabric on T.E.'s.

PERFORMANCE

LI max

36 @ 45

mph

Min. sink 1.9

fps

@

44mph

6-fps

!irk @

.. 77

mph

OTHER

Designer

F.

N. S lings

by

No. built

in

England

60

No.

active in the U.S.

5

References: WS-II, p.

I18.

Price

$4250i

kit,

$2630;

plus

11

1

2 /0 duty.

pictured, N5563V, 's

an

F now68

SLlNGSBY

KIRBY KITE

N37190

SPECIFICATIONS

Span 46.6 ft.

Area

156

sq. ft.

Aspect

ratio

.

13

Airfoil Go 535


Payload

185

lb.

Gross weight

494

lb.

Wing

loading 3.17 Ib./sq. ft.

Structure: J -strut-braced wood/fabric wing>.

wood/fabric tai l, wood fuselage.

PERFORMANCE

LID max

.21

The

one

Kirby

Gull

in the U.S.was

builtfrom

p lans by Herman Kursawe

in 1946

and

is

now owned

by Tom

Smith of

Clinton, N.Y.

It is a 1938 design and features gull wings,

has a

take-off dolly and is

blue

and white.

22

OTHER

Designer F. N. Slings

by

References: WS-I, p . 120; 5 -37, p. 10, 3

view

EXP.

OTHER

Designer

F.

N. Slingsby

References

WS-I, p. 121;

N-D 48. p.

17.

Photo by Ray Shamblen

George Masinda of Royal Oak, Mich., owns

the

only

Kite in

the

U.S

.•

a British

design of

the 30',. It has no

wheel

but features a

gull wing.ATC .

SL N S

Y KIRBY GULL

N41829

SPECIFICATIONS

Span

50.2

ft.

Area

160 sq.

ft.

Aspect ratio 15.8

Airfoil

NACA

4416

Empty

weight .419 lb.

Payload

.206 lb.

Gross weight " .625 lb.

Wing loading .3.9 Ib.!sq.

ft.

Structure: I-strut-braced

wood/fabric

wings,

wood/fabric tail, wood fuselage.

PERFORMANC,E

LI

max 26 @ 48 mph

Min.

sink.

. . . . . . . . . . . . .2 ·fps @

40

mph

S O R I N G

Photoby

Tom

Smith



The Weihe was produced

by

the

Focke-Wulf

company in

Germany

beginning in 1950,

from

a

design that

first flew in 1938. It

features quick

assembly,

has

dive brakes and

takes off on a droppable dolly. Dick John.

son won the 1959

Nationals

with a Weihe.

ITALIAN' M·100S

u S Agent: Jack Perine

304 Edmonston Dr.,

Rockville, Md.

SPECIFICATIONS

Span

49.2 ft.

Area

141

sq. ft.

Aspect

ratio

17.1

Airfoil .NACA 63-618/615 [mod.)

Empty weight

441

lb.

Payload

..

253

lb.

Gross weight

694

lb.

Wing

loading 4.9 Ib.lsq. ft.

Structure: wood/fabric wings and tail,

wood

fuselage.

PERFORMANCE

L/D max

30

@

50

mph

Min. sink 2.15 fps

@ 40 mph

6.fps

sink

@

. 83

mph

Some of those imported

are

ATC'd while

others are

EXP. because

of modifications.

References: WS·I, p. 56; S·O 46, p. 13, arti·

c1e specs; M·J 50, p. 9, photo, specs, p.

18. 3-view,

curves.

Designers

Alberto and Piero Morelli

No. built

in Italy. . . •. 58

No. active in the U.S. .3

References:

WS-II,

p. 140; 7-63,

p.

6,

photo,

specs

Price: 3000

plus

shipping ( 670 to

either

coast

I and

1 h

duty.

WEIHE

SPECIFICATIONS

Span

59.1 ft.

Are.a

198

sq. ft.

Aspect ratio

17.6

Airfoil

Go 549

Empty weight

508 lb.

Payload

230 lb.

Gross weight

738 lb.

Wing loading

3.7

Ib.lsq. ft


wing

and

tail,

wood

fuselage.

PERFORMANCE

LID

max

31.5 @

47'mph

Min. sink

2

fps @ 40 mph

6-fps sink @

72

mph

OTHER

Designer

Hans

Jacob,

No active

n

the U.S.

6

An Italian

Standard Class

design, the

M

100S was first flown in 1960. It features

quick

assembly and unique rotating disc segments

for dive brakes.

The 3 in

the

U.S.

are owned

by Mario Piccagli of Chevy Chase, Md.,

Don Brockhurst of

Redwood

City,

Calif.,

and

Jim

Wasley

of

Orinda, Calif.

B.

Temple.

hagen of Oakville, Ont., has one, also. EXP •

(ATC

applied for).

OTHER

The Austrian MG-23SL is now in

production

and two have been imported

to

the

U.S.,

one

by Earl

Menefee,

the

agent,

and another

by

George Asdel of

Sunnyvale,

Calif. Improve

ments over the MG·23 include

a

longer

canopy

that slides forward, raised rudder

and

lowered

wheel.

A

TC.

OBERLERCHNER MG-23SL

U

S

Agent: Earl Menefee

1855-D Ednamary

Way,

Mt.

View,

Calif.

SPECIFICATIONS

Span

53.8 ft.

Area

153

sq. ft.

Aspect ratio

.18.54

Airfoil.

NACA

63-315

Empty weight

530

lb.

Payload

263 lb.

Gross

weight

793

lb.

Wing

loading

5.2 Ib.lsq.

ft.

Structure:

wood/fabric

wings

and tail,

wood

fuselage.

PERFORMANCE

LID

max

33

@

53 mph

Min.

2.1

fps

@

48

mph

6-fps sink

@

83 mph

OTHER

Designer

Erwin

Musger

No. built

in Austria

.26

No. active

in

the

U.S.

.2

References:

WS-I,

p. 10; 2-604 p.

15,

photo,

specs

Price: approximately 4600 delivered

to

California.

There

is one MG-23 in the U.S., N6729C,

owned by Dr. Bagshaw of Stanford, Calif.

Figures

for it are the same

as

for

the

MG.

23SL,

which

supercedes

it

as a production

model, except the

LID

max. is

only 32.

It

features a folding

tail, for

trailering, and

dive brakes. EXP. (ATC pending).

MAY 1964 23



DUTCH SAGITIA

U S

Agent: Sypko Andreae

852 Mountain Blvd.,

Oakland, Calf.

SPECIFICATIONS

Span

.

48.5 ft.

Area 129

sq.

ft.

Aspect

ratio . . .

18.7

Airfoil NACA 63-618


Payload 220 lb.

Gross

weight

707

lb.

Wing loading

..

5.47 Ib./sq. ft.

Structure: wood/fabric wings and tail,

wood

fuselage.

PERFORMANCE

LI max. .34 @

53

mph

-Min. sink

2.1 fps @ 47 mph

6-fps sink

@

. . . . . • . 93

mph

Introduced in 1951, the Finnish

Vasama

(Ar

row)

is

a

Standard Class design

with

dive

brakes that

won the 1963 OSTIV Prize

at

the

World Championships.

t features a she ll

structure wing box and quick assembly. Don

Fisher, the U.S. agent, has importedthe onl'y

one

so

far, N7889C, coloredlight

blue. EXP.

OTHER The Dutch Sagitta (Arrow) is a Standard

Desigrler P. H. Alsema

No. built

in Holland 15

No.

active in the U.S.

1

References: WS-II,p.

154.

Price: $3884

plus

Shipping

and

11

1

12% duty.

OTHER

Designers T. Tervo, J. Jalkanen and

K Hedstrom

No. built

in

Finland . . .

27

No. active

in

the

U.S. I

References:

WS-II,

p.74; 3-62, photo,

specs;

1-63, p. i photo,specs.

Price:

contnct

agent.

Class sailplane featur ing

a

sliding canopy,

dive

brakes,

no skid,

quick

assembly

and

robus t const ruct ion. J im Hol liday o f San

Francisco, Calif.,

has the only one in the

U.S. so

far

but

two others are

on

order.

ATC .

FINNISH

VASAMA

U S

Agent:

Don

Fisher

962 Carson Dr.,

Sunnyvale.

Calif.

SPECIFICATIONS

Span 49.2 ft.

Area .126

sq.

ft.

Aspect

ratio

19.2

Airfoil. Wortmann FX-05-188 ( 1 4%) a t

root,

NACA 63

2 ) -615 at tip.

Empty weight .450

lb.

Payload .220 lb.

Gross weight

670

lb.


Structure:

all-wood, fiberglass nose.

PERFORMANCI:

LI

max 34

@

60

mph

Min. sink

2.2

fps @

47

mph

6-fps

sink

@

88

mph

BREGUET 905s FAUVETTE

SPECIFICATIONS

Span 49.2 ft.

Area

121

sq. ft.

Aspect

ratio

20

Airfoil

NACA 63-420/613

Empty weight . . 422 lb.

Payload

183 lb.

Gross

w e i g h ~

.

605lb.

Wing loading . . .

5 Ib./sq.

ft.

Structure:

wood

[ply/plastic)/fa bric wings

and tail;

steel.tube frame, ply/plastic cov

ered fuselage.

PERFORMANCE

UD max

Min. sink

6-fps

sink

@

..

30

@

48

mph

2.1 fps @ 40 mph

78

mph

OlHER

Designer

.

Breguet

Photo by

S.

A. AJdott

and dive brakes. One

is in the U.S., N280M,

owned

by Dale

May

of Mt.

Prospect,

III.

ATC.

No.

r.uilt in France over

50

e f e r e n c ~ s

'NS-II,

p. 90.

The

Breguet90S,

Fauvette

is

a

French

Stand

ard Class

design

featuring a large

v tail

The Elfe PM-3

is

a

one-of-a-kind

sailplane

brought to t ,he U.S.

b y R en e Comte of

Switzerland who

entered it in the

Nationals

but damaged i t early in the contest. It is

now

owned by Rodney Smith of Oklahoma

City,

Okla.

It

features

full-span airfoil

flaps,

divebrakesand

a

take-off

dolily. EXP.

SWISS

ELFE

PM-3

N63514

SPECIFICATIONS

Span

52.5

ft.

Area

134

sq.

ft.

Aspect r.atio 20.5


Payload .210

lb.

Gross weight

.940

lb.

Wing

loading 7 Ib./

sq.

ft.

Structure:

all-wood

monocoque sandwich

PERFORMANCE

L/D max

40 @

63

mph

OTHER

References:

7-62, p. 2 photo, specs.

S O R IN G

4




A most

popular

design developed in Ger

simple skid

landing

gear and dive brakes.

many ;n 1930,

thousands of Grunau

Baby's

The one

pictured here,

N3371

G,

was im

were

laler

built

in

many countries.

II

has a

ported

by the Lilienthal Soaring Club and

GRUNAU B BY 2

SPECIFICATIONS

Span .44.5 ft.

Area

.152.5

sq. ft.

Aspect ratio 13

Airfoil . . . . . . . . . Go 535

Empty

weight 350

lb.

Payload 200 lb.

Gross "eight 550 lb.

Wing loading 3.6 Ib. sq. ft.

Structure: I-strut-braced wood/fabric wings

and

tail, wood/fabric

fuselage.

PERFORMANCE

LI max

17

@ 38 mph

Min. sink

2.8 fps @ 34 mph

6-fps sink @

55 mph

OTHER

Designer

Edmund Schneider

No.

active in

the U.S.

2


95;

9-37, p. II, 3

view; J-F 42, p. 10,

article,

3-v;ew.

is flown al Elsinore, Calif. Bob Marlin of

Utica, N.Y., owns the other

aclive one

In

the U.S., N9079H. EXP.

OLYMPIA

SPECIFICATIONS

Span .49.3

ft.

Area 161 sq. ft.

Aspect ratio 15

Airfoil .. Go 549,

676


Payload

195 lb.

Gross

weight

595 lb.

Wing loading 3.7 Ib. sq. ft.

Structure:

wood/fabric wings and tail, wood

fuselage.

PERFORMANCE

L/D max

25@41 mph

Min. sink

.2.3 fps @

34

mph

6-fps sink

@

66 mph

OTHER

Designer Hans Jacobs

No.

active

in

the

U.S. . 2

References: WS-I,

p.

57 {Meise

51J;

WS-I,

p. 102 (Eon Mark

2);

5-39, p. 4,

article,

specs, 3-view; M·J

44,

p. 3, article, 3

view; S-O 46, p. II, article,

specs;

M-A

47,

cover,

p. 16, caption;

N·D

48, p. 4,

article by Ray Lunger on Ihe one he buill;

M-A 52, p. 26, 30, photo, specs, 3.view,

curves; 5-60, p.

18

article,

photo, specs;

"Aero

Revue," 3-63, p. 143,

article,

specs

and

3-views of all ships

entered

in Olym

pic

design competition.

Much has been

written about

the Olympia,

dS witness the references. The name comes

from the design competition conducled

to

selecl the one-design model to

be used

in

the 1940

Olympic

Games. The Games

were

cancelled bul

the

design was

produced

in

large

numbers by

many countries thereafter,

the German vetsion as Ihe

Olympia

Meise

51

and the

British

as

the

Eon

Olympia

Mark

2

(with

wheel). It has dive

brakes

and is

well-known for its good flying

qualities.

Two

were built from plans in the U.S. and two

are

active

now, N 1221 M, owned

by

Bill

Foley

of Glaslonberry, Conn., and N4943V,

owned by

Walt

Blake of Bellevue, Wash. EXP.

The Kranich III is a German two-place tan

where il

placed 2nd

and 3rd.

Only one has

dem design introduced in 1950 and flown

been

importeJ

to

the

U.S. and it is flown

in the 1962 World

Championships

in Spain

at

Elsinore, Calif., by

the

Lilienthal Soaring

MAY

964

FOCKE-WULF KRANICH

III

N74 28

SPECIFICATIONS

Span .59.2 ft.

Area 228 sq.

fl.

Aspect ratio 15.4

Airfoil Go 549, M 2

Empty

weight

730 lb.

Payload 420 lb.

Gross

weight I r50 lb.

Wing loading

5

Ib. sq.

ft.

Structure: wood wings and tail, some fabric

on T.E.'s, steel-tube/fabric

fuselage.

PERFORMANCE

L/D max

.31 @

56

mph

Min. sink

2.5 fps @ 48 mph

6-fps sink

@

86

mph

OTHER

Designer

.. Hans

Jacobs

References: WS-I, p. 55; 1-64, cover,

specs.

Photo

by

Jim

Go"

Club. It is white and red and has dive brake•.

EXP.

25



WOLF

SPECIFICATIONS

Span 46 ft.

Area

.162

sq. ft.

Aspect ratio 13.1

Airfoil Gottingen 532

Empty

weight 350 lb.

Payload

200

lb.


Wing

loading 3.4 Ib.isq.

ft.

Shuct'Jre: I-strut-braced wood/fabric wings

and tail,

wood

fuselage.

PERFORMANCE

L/ D

max

.

17

Min. sink

3 fp s@40mph

The

Wolf

was

developed in

Germany

in

6-fps

sink @

.50 mph

1935 by

Wolf

Hirth. Records indicate

that

rere,

N22431,

colored silver and red, which

OTHER

about 52

were

built, including a few

from was

built

in 1945

by

a

vocational school

in

Designer

.

Wolf Hirth

plans in the U.S. Warren Price of Silver

Champaign, III. No spoilers.

German-built

References:

1-37, p. 6, article, 3-view; 7-37,

Spring, Md .

has

the only one

still

active

versions are ATC'd,

but

Price's

is EXP. p. 8,

photo,

specs.

Photo by Donnis Allen

MINIMOA

N16923

SPECIFICATIONS

Span

55.7

ft.

Are6

205 sq.

ft.

Aspect

ratio

16

Airfoil

Go

681,

693

Empty weight

440

lb.

Payload

260 lb.

Gross

weight

700

lb.

Wing loadir,g

3.2 Ib.isq. ft.

Structure:

wood fa

ric wings

and

tail,

wood

fuselage.

PERFORMANCE

L/D

max

26

@ 53

mph

Min. sink

fps

@ 37

mph

OTHER

Designer Wolf Hirth

No. built

in Germany 110

References: 1-37, p. 4, article, 3-view; 7-37,

p. 6, photo, specs;

M-J

56, p. 13, article.

The Condor 4 first flew in 195 I and a num

bEr

were

built in Germany

by

Schleicher.

S"me were

entered in the 1952

World

Cham

pionships

in

Spain where

E

G. Haase

set

a

"arid

multiplace 100-km.

triangular

course

speed record. Hans Luenger

of Clevel1and,

Ohio, imported

the one pictured

in 1960.

The

original wood fuselage

was

damaged

and

has been replaced with one of steel-

SCHNEIDER

ES·S ARROW

VH·GNB

SPECIFICATIONS

Span 43.4

ft.

Area

I 18.3

sq. ft.

Aspect

ratio

16

Airfoil NACA 63-618 mod.


Payload

33

lb.

Gross Nelght .616

lb.

Wing loading

5.2 Ib./sq.

ft.

Structure:

wooeL/fabric

wings

and tail, wood

fuselage.

PERFORMANCE

L/D max

28 @

51 mph

Min. sink

2.7

@ 48

mph

6-fps sink @ 76

mph

The

Minimoa

is distinctive

for

its gull wing

and the soaring history it made after its

introduction in 1936. It established

many

records,

including altitude using lift in Cu

Nims. The one pictured, N 16923, was

brought to

the

U.S. on

the

Von Hindenburg

tube/fabric construction with built-in wheel.

The

ship

features a gull

wing, dive brakes,

all-moving tail and two-place

tandem seat

ing.

Colored white

and red.

EXP.

OTHER

Designer

Heini Dittmar

No. built in Germany

18

References: WS-l, p.

90.

Photo by

E. J.

Wally

Zeppelin.

It

is

now all

white and is owned

by

Del Booth of

Fort

Worth.

One

other is

known to be in the U.S., N 18163, but has

not

been

active for some years. Last known

owner

was

Charles

Burdick

of

Utica, N.Y.

ATC.

SCHMElZ

CONDOR

4-2

N6S07D

SPECIFICATIONS

Span

59.2 ft.

Area

230

sq. ft.

Aspect ratio

15.2

Airfoil

.Go

532, NACA

0012

Empty weight

.868 lb.

Payload

320 lb.

Gross weight

11 88 lb.

Wing loading

5.2

Ib/sq.ft.


and tail,

stee'l

tube/fabric

fuselage.

PERFORMANCE

L/D max

30@50mph

Min. sink

2.3

fps

@ 43

mph

6-fps

sink @

..

76

mph

OTHER

Designer

Harry

Schneider

No.

built in Australia

7

Refarences: WS-II,

p. 28.

Price: $4750 on

west coast.

The

Arrow

is

the only

Australian

sailplane

in the U.S., now owned

by

John Wother.

spoon of Alamo, Calif., colored white and

bearing

its

original registration letters.

It

is

a Standard Class design with dive

brakes

and this one was flown in the 1953 World

Championships.

It features a one-piece wing

and

quick

assembly. A IS-meter,

2-piece

wing

version

is

being

constructed for the

955

World

Championships. Australian ATC.

S O R IN G

6



POLISH ORLIK

N23727

SPECIFICATIONS

Span

49.2 ft.

Area

159

sq.

ft.

Aspect ratio

.15.2

Empty weig ht 370 lb.

Payload

210 lb.


Wing loading

3.65 Ib.lsq. ft.


wing

and tail, wood

fuselage.

PERFORMANCE

L/D

25

OTHER

Designer

A.

Kocian

References:

"Aero Revue,"

3-62, p. 143,

specs, 3-view.

The Mucha Standard was developed in Po

land

for the

1958 World Championships

held

in that country, where it

took

first place

in the Standard Class. Produced in quantity

thereafter, it was used in a subsequent

Polish Nationals

as

the one

design

flown

by

The Orlik was a

Poli.h

entry in the 1940

Olympic design

competition.

One

was exhib

ited

at ·he New York

World

Fair,

purchased

by

a

private party,

confiscated by the

State

during

the war,

sold surplu, later,

overhauled

by Clarence See,

sold to

Paul MacCready,

Jr., who won the 1948 and 1949

Nationals

with it, sold to George

Lambros,

flown by

Lyle

Maxey

in the 1961 Nationals, and

re

cently

sold to

Merritt

Wilson of

La Canada,

Calif. It is red and

white

and features gull

wings and a take-off dolly. The photo

show.

Paul MacCready flying it at Torrey Pines

without the

canopy.

EXP.

SZD·22C

MUCHA

STANDARD

N3358G

SPECIFICATIONS

49.2 ft.

Area

137

sq.

ft.

Aspect ratio

17.65

Airfoil

G0549,M12

Empty

weight

530 lb.

Payload

240 lb.

Gros, weight

770

lb.

Wing loading

6.2 Ib.isq. ft.

Structure:

wood/fabric wings

and

tail, wood

fuseli!

ge.

PERFORMANCE

LID max

27.8

@

47 mph


6-lps sink

@

73

mph

OTI·I[;[,l

Designers. Nowakowski, Grzywacz and

Zatwarnicki

References:

WS-If, p. 164.

Photo

by

George Uveges

all entrants.

One has

been imported

to

the

U.S. and it is now owned by

Gene

Marks 01

Riverside, Calif. It has

dive brakes and the

C model has rubber water ballast tanks in

the wing

leading

edges. EXP

SZD·24C FOKA (SEAL)

N204FZ

SPECIFICATIONS

Span 49.2 ft.

Area 130.5 sq.

ft.

Aspect

ratio 18.5

Airfoil NACA 63 (3).618,4415 mod.


Payload 242 lb.

Gross

weight

764 lb.

Wing

loading

5.5 Ib.lsq. ft.

Structure: wood,

ply/plastic sandwich skins.

PERFORMANCE

L/D

max

34 @ 54

mph

Min. sink

2.2 Ips @ 47 mph

6-fps sink

@

80

mph

OTHER

Designers

Okarmus and Mynarski

Reterences: VvS-II, p. 166;

4·63,

p. 9,

photo,

specs Interavia, 8-62.

Price: approximately $4000 plus shipping.

Contact

Motoimport,

26 Przemyslowa, P.O.

Box 990, Warsaw, Poland. Duty extra.

The Foka is the

latest

Polish

production

Standard Class sailplane. It leatures a re ·

c1ined pilot positio" and dive brakes. Adam

Witek placed 3rd in the 1963 U.S. Na

tionals with a Foka

and

the

present

world

leminine

G R

record

of 284 miles was

set with a f'oka in Poland. F. Foz 01 Elkhart,

Ind. has

the

only one in the U.S., colored

white an :J

pale

blue. Since the U.S.

has

no

reciprocal licensing agreement with Poland

as yet, it is EXP.

SZD-19·2A ZEFIR 2

N86674

SPECIFlCATIONS

Span 55.8 ft.

Area

151

sq. ft.

Aspect ratio .20.6

Airfoil NACA 65 (2)-515 mod.


Payload .242 lb.


Wing loading 5.9 Ib.lsq.

It.

Structure:

wood,

ply/plastic sandwich skins.

PERFORMANCE

LID max

. .35

@

59

mph

Min. sink

2.4

Ips

@

54 mph

6-fps sink @

90

mph

M Y

1964

OTHER

Designer . Bogumil

Szuba

References: WS-If, p. 160.

Price:

approximately $4500

plus shipping.

Contact

Motoimport, 26 Przemyslowa, P.O.

Box 990

Warsaw, Poland.

Duty extra.

The

Zefir is

the leading Polish

Open

Class

competition

sailplane

which won the 1963

Photo by

e ~ l i e anis

World Championship. It leatures a reclined

pilot position, sloHed flaps, tail parachute

for braking and a retractable wheel/tow

hook unit. Je;'ry

Austin

of Pasadena, Calif.,

owns

the only one

in

the

U.S.

Since the

U.S.

has

no reciprocal

licensing

agreement with

Poland as yet, it is

EXP

27



FLYING WING SAILPLANES

Photo by Fotomart

The

short-span

"Flying Plank" WaS

developed

in 1954 by

three

members of TSA

(the

EPB

in

the designation I

Phil Easley, Jack Powell

and

AI Brackstrom, as a mihimum-size

ship

that would

have

reasonable

performance.

The prototype EPB-I, N66348, pictured,

WaS

used for drag reduction tests at Mississippi

State

and

then retired.

Plans for the

EPB-IA

were

sold and a

number

of

ships have

been

built from them, including one with twin

rudders similar to those on the

EPB-I, now

owned by

Richard

Roberts

of

Glen

Burnie,

Md., N7634B; one by AI Cleave

of

Mer

cedes, Texas, an EPB-I C, N 19C. with 27-ft.

span

and

one

central vertical tail similar

to

the

other Plank pictured

here,

orange with

white

trim,

LID

max. of 23

@

60 mph; and

one by

Bill Idom

of Ft. Worth, Tex., an

EBI-IA,

N73869, similar

to Cleave's

but

with

span

of

30.5 ft.,

colored white,

flown 70

hours

in 1963. EXP.

EPB-IA FLYING PLANK

SPECIFICATIONS

Span

25 ft.

Area

100

sq. ft.

Aspect latio

6.25

Airfoil Abrial

15"/0

Empty weight

150

lb.

Payload

200

lb.

Gross weight

350

lb.


Structure:

wood/fabric.

PERFORMANCE

L/D max

20

@

60 mplt

Min. sink

3.5

fps @ 47 mph

6-fps

sink

.85 mph

OTHER

Designer A. A. Bachtrom

No. still

active

. . . . . . . . . . . . . 3

References: J-A

54,

p.

14,

article, specs,

3

view; S·O 54,

p.

18,

article; M-J

55,

p.

15,

article; J-F 57, p.

18,

article

on flight

tests,

curves, specs;

1-60,

p.

10,

article on

N7634B;

3-62, p. 16,

article.

Price:

$25

for plans

from A Backstrom, 3009

Dothan Lane,

Dallas 29, Texas.

MARSKE

XM.ID

N5823N

SPECIFICATIONS

Span.

40 ft.

Area

170 sq. ft.

Aspect

ratio

9.5

Airfoil

14%

Fauvel

Empty weight

350 lb.

Payload

200

lb.

Gross weight

550

lb.

Wing

loading

3.2 Ib.lsq. ft.


wing,

steel-tube/fi

berg lass

fuselage.

PERFORMANCE

LID

max

28 @ 58 mph

Min.

sin'k

2.4

fps

@

42 mph

6-fps sink @

75 mph

OTHER

Designer

James Marske

References: WS-II,

p.

226;

12-60, p. 4,

arti

cle, 3-view.

Jim

Marske

of Michigan City, ,I.nd., built his

XM-I in 1957,

originally

with twin fins on the to fly, being ;+all- and spin-proof. Colors

available

for

home builders. Under construc

wing

tips but later modified

to

have only

are white with red trim. He

plans

a

tapered

tion now is

an

all-fiberglass flying wing for

one

vertical

tail on

the

fuselage.

It

is

easy wing

version

for which

plans

will be made

Standard Class competition. EXP.

S O R I N G

8



FAUVEL AV-36

N4839V

SfECIFICATIONS

Span 39.2 ft.

Area

153

sq.

ft.

Aspect ratio

10

Airfoil

F

(2),

17 /0

Empty

weight

21>4

lb.

Payload

.230

lb.

Gro"

weight

.494 lb.

Wing loading

3.2 Ib.lsq. ft.

Structure:

wood/fabric.

PERFORMANCE

L/D

max 24

@

52 mph

Min. sink 2.7

fps @

42 mph

I>.fps sink

@

.1>8 mph

OTHER

Designer

Charles

Fauvel

References: WS-I, p. 41; M-J

53,

p.

3,

arti

cle; J-A

53, p.

2

aerodynamic appraisal

S-O 54,

p. 12,

article

on flying

N4839V

2-1>1, p.

7, 310-km. flight description

1>-1>2 p. 12, 397-km. flight

description.

-.. :

N

4

8

1

9

v

The Fauvel AV-31> is a flying wing

built

in

quantify in

France.

An

effort

was made to

promote the

construction

of

some from

plans

in the U.S. but

Syd Hall and Fred

Jukich were the

only

ones to complete one.

~

. '

.... .

r ~ ~ . . . . . . . . . · _ ·

__-:

Jack Lambie owned it

for

a few years and

flew

it

a

lot.

It is now owned by

~ Latti·

more

of

Ft. Worth, Texas, and Dick

O'Neal.

EXP.

The

Horten

IV

flying wing was

an

outstand

ing German sailplane and

one

was imported

during 1950.

Rudy

Opitz flew

it

in

the

1952

Nationals and placed 7th. It later went

through

a

flight test program at Mississippi

State where

it still

resides and is for sale.

Photo by

Tom

Dilldrd

It features

19.3-deg. sweep, kneeling pilot

position, dive brakes

and

take·off dolly.

EXP.

OTHER

Designer

Horten brothers

References: N-D 50, p. 8, article, specs,

curves, 3-view.

HORTEN IV

N79289

SPECIFICATIONS

Span

1>5.1>

ft.

Area

227 sq.

ft.

Aspect

ratio

19

Airfoil

Horten

IV

Empty

weight

.501> lb.

Payload 21>4 lb.

Gross

wei g ht

770 lb.



wing, steel-tube

fuselage.

PERFORMANCE

L/D max 31.7

@ 45

mph

Min.

sink 1.8 Ips @ 35 mph

I>-fps sink

@

.78 mph

BKB l

N2991G (WAS CF-ZDK·X)

SPECIFICATIONS

Span

40

ft.

Area

11>0

sq. ft.

Aspect ratio

10

Airfoil

NACA 8·H-12

Empty weight

410

lb.

Payload

.. 200 lb.

Gross weig ht

1>10 lb.

Wing loading

3.8

Ib.lsq.

ft.

Structure: all-wood.

PERFORMANCE

L/D max

30

@

54 mph

Min.

sin k

3

fps

@

45

mph

I>.fps sink

@

.73

mph

OTHER

Designer

S. K.

Brochocki

References:

WS-II,

p.

50;

"Aero Revue,"

The

BKB-I

flying wing sailplane

was

devel

oped in Canada in

1959

by

S. Brochocki,

Witold

Kasprzyk

and

A.

Bodek

and

is

owned

,},y

Mr. Kasprzyk.

AI Wilson

of Seattle,

Wash .. has it,

however,

for flight testing. It

has

37 hrs. t o ~ l time,

won't

spin and doesn't

drop

a wing

after

stalling. Wing

tip

rudders

deflect

70

deg.

to

act

as

spoilers.

Wing

has

48-in. chord and is

swept 13

deg. Colored

white

and black. Wilson

is building a

similar

sailplane with

51 .3·ft.

span and Kasprzyk is

building one

with

38-in.

chord,

50-ft. span

and 15-deg. sweep

he

expects

will

have

an LID

max. of 38. EXP.

M Y

1964

EXLINE PRIMARY

N14E

SPECIFICATIONS

Span 38

ft.

Area . 190

sq.

ft.

Aspect

ratio

7.1>

Airfoil Gottingen

Albert

Exline of

Miamisburg, Ohio,

built

this

primary

glider in

191>2 with James Ex-

line, modifying a

design

by Jack Herrick.

It is colored red and white. EXP.

9



OTHER U S ONE-OF-A-KIND SAILPLANES

ROSS RS-l ZANONIA

N18134

SPECIFICATIONS

Span

46 ft.

Area

125

sq.

ft.

A -pect r ~ i o

17

Airfoil

NACA

2418, 2412

Empty

weigh+

330 lb.

Payload

270

lb.

Gross

weiCjht

600

lb.

Wing loading

.4.8

Ib./sq.

ft.

Strueture: all-wood.

PERFORMANCE

LI

max

29

@ 48 m ph

Min. sink

2.3

fps @

43

mph

6.fps sink

@

75

mph

OTl-iER

Designer Harland

Ross

References: 10·37, p. 7, article on construc

tion, specs, 3·view;

J·F

41, p. 8, record

dis .

flight story;

M J

49

p. 7,

record

dis .

history

by

winning 1he 1940, 1941 and 1946

Nanona/s, placing third i n

1947

and second

in 1943,

set National

distance

records

of

290 mi. in

and

325 mi. in 1947, and

world aliitude

record of 33,500

ft.

in

1949.

It featureo a gull

wing and take-off dolly.

Now

owned by AI

Wyrick

of

Austin,

Texas.

Colored

white

with red

trim. EXP'.

RH-3

N69272

SPECIFICATIONS

Span 50 ft.

Area

146

sc:.

ft.

Aspeet

ratio

17

Airfoil

NACA 6J

(3)·618

Empty

weisht 480 lb.

Payload

235

lb.

Gross weig t

715 lb.

Wing loading,

4.9 Ib./sq. ft.

Strueture:

all-wood.

PERFORMANCE

LI

max

34

@

55

mph

Min. sink

1.8

fps @

38

mph

6-fps

sink @

8G

mph

$55 from Ross at 5719

Hanover

St., Wichita,

Kansas

67220. Mervin Hicks

of Aurora,

Colo., bought a set and over a

period <,f

10 years built the

RH-3, an

R·3 modified by

extending the wing, using a laminar airfoil

and flaps.

It first flew

on Jan.

" 1963 . EXP.

subsequent

Nationals

(2nd in

1956).

Brad

Straus then purchased it and it placed

2nd

in the '1960 Nationals flown by Bernie Car

ris. The wood

fuselage

and

tail

we,e

dam

aged later

in

an

accident so

Strauss had

an

all.metal fuselage and tail designed by

Adrian Kisovec (thus the K in the present

designation

I and built. Carris placed 2nd

with it in

the

1963

Nationals, only

8

points

behind

Johnson in a

k y l r ~

4. It has dive

brakes and a take-off dolly. EXP.

SO RING

After the RS-I, Harland Ross was

commis

sioned by

SSA

to design and build the

Ross

R·2 "Ibis" 'for promotion purposes. It was

quite similar to the RS-I but the gull wing

had

a

48-ft. span and

an

all.movinq tail was

used.

It made the first

wave flight

in

the

U.S. on

Oet.

25, 1938,

at

White

Mtn., N.H.

RJK·5

N79T (WAS N3722C)

SPECIFICATIONS

Span

55

ft.

Area

.125 sq. ft.

Aspeet

ratio

24.2

Airfoil

.NACA

63 (2)·615

Empty weight

485 lb.

Payload

265

lb.

Gross weight

750 lb.

Wing loading

6 Ib./sq.

ft.

Strueture: all·metal.

PERFORMANCE

LI

max

.40 @ 50

mph

Min. sink

1.74

fps @ 45

mph

6-fps sink

@

85

mph

OTHER

References:

WS-'I',

p.

189;

M-A

50,

p.

15,

photos,

abuilding;

.I-A 51, p. 19, a,ticle

on development;

5-0

51, p. 3, story of

world

dist.

record

flight of

535 mi., p. 14,

analysis of flight, p. 17, article on drag

reduction, curves, 3-view.

The RJ K-5, or R.J-5

as

it was

formerly

known,

became one of the world's most famous sail

planes when

Dick

John,on

flew

it 535

mi.

in

1951

for

a

world distance record that stood

fo' 12 years. It

was one

of the

first sail

planes

to

utilize a laminar airfoil, and achieve

a

glide ratio of 40 to I.

The

original design

was

almost entirely

that

of

Harland

Ross,

30

flight

sto,y;

J·F

49, p. 2,

record alt. flight

story;

A 50, p. 13,

specs, curves,

3

view

Harland Ro S

built the

RS·I in 1937 for

Harvey Stevens. hence the designanon. If

was

of

the

first

small.span high-perform

ance

sailplanes and

later, owned

and

p i i o ~ e d

by

John

Robinson,

made

American

soaring

Photo by Mervin Hicks

It was

"written

off" in 1940 when the pilot

tried to reverse an

auto

tow.

Ross later

altered the

design

to

remove

the gull,

change

to

a

23018 airfoil and simplify con·

struetion for home builders, designating it

the

R-3,

for which plans are availab'le for

whom Johnson commissioned

to

build it

in

1948.

Johnson

took

delivery

of

the

semi

complete ship in 1950

and

finished it at Mis

sissippi State,

incorporating

some

changes

of his

own.

With it he won the 1950, 1951,

1952

and

1954

Nationals and set

a

317-mi.

National goal record, a 363-mi. National

distance record, a 52.8-mph 100·km. trian·

gula,

speed course

record, and the

535-mi.

distance

recoi·d

before

selling

it

to Gra·

ham Thomson who placed

high

with it in

Photo by S. A. Aldott



Harland Ross completed his two-place R·6 in

1956. It has the same wing as Ross originally

built for

the RJ-5 so it is one of the heav

iest wing loaded sailplanes in the world. It

movable

bubble. 'n 1958 Ross used it to set

world multi

place records in

all 3 speed cate

gories and the National G R record of

234.66 mi. Colored white. EXP.

has dive brakes and a take-off dolly. The

passenger

sits

aft

of the

spar under

a re-

P RL

PG·130 PENETRATOR

N8 46H

S P I F I ~ T I O N S

Span ., 48

ft

.

Area

. 130 sq. ft.

Aspect ratio 17.75

Airfoil

.Go

549

Empty weight

.. 480 lb.

Payload

200 lb.

Gross weight

680

lb.

Wing

loading

5.23

Ib.lsq.

ft.

Structure:

wood/fabric

wings

and

tail, wood

fusel'age.

PERFORMANCE

LID

max

.33

@

52 mph

Min. sink .2.1

fps @

44 mph

OTHER

Designer Harry Perl

References:

WS-I,

p. /89; S-O 53, p. 21,

photo, news item; M-A 54, p.

2

article,

specs

3 view.

Wade

Steinruck of Spring Valley, Calif. com

pleted his SCS-I in 1959 after many years

of

spare-time work. It features a vee tail,

spoilers in aft of canopy

hatch and

a 3

References: WS-II, p. 239, S-O 58, p. 2, story

ROSS R·6

N34H

SPECIFIC TIONS

Span

55

ft

.

Area

125

sq.

ft.

Aspect ratio

.24.2

Airfoil

NACA 63

(2)-615

Empty

weight

662

lb.

Payload

564 lb.

Gross

weight

.1226 lb.

Wing loading

9.8 Ib./sq.

ft.


PERFORMANCE

LI max

40

@ 66

mph

Min. sink

2.35 fps @ 60 mph

6-fps sink @

100 mph

of

speed

record flights;

10·60 p. 4, story

of ~ 6 5 m i flight; 10-61, p.

2 photo.

WHIGH M GW·l

N343L

SPECIFIC TIONS

Span

44.5 ft .

Area

. .. 107 sq. ft.

Aspect ratio

.18.5

Airfoil

NACA 23018

Empty

weight

340 lb.

Payload

200 lb.

Gross

weight

540

lb.

Wing loading . 5 Ib.lsq.

ft


PERFORMANCE

LID max

29

@

55 mph

OTHER

Designer Eugene Whigham

MAY 1964

Photo

by

Pete Sowers

Harry Perl of Livermore, Calif., completed

his Penetrator in I%3. It features an all and dive brakes. It had a take-off dolly but

moving tail,

styrofoam-filled

leading edge is now having a fixed wheel

installed.

EXP.

Photo by Rose Marie

Ucher

piece wing. Polished metal finish with orange

canopy

and

orange and

black

wing tip

stripes.

EXP.

STEINRUCK SCS-l

N32K

SPECIFIC TIONS

Span

44 ft.

Area

132.5 sq.

ft.

Aspect ratio

.. 14.6

Airfoil

NACA

33012

Empty

weight

314 lb.

Payload

236 lb.

Gross weight

550 lb.

Wing loading

..

4.15

Ib.lsq. ft.


PERFORMANCE

LI max

30 @

55

mph

Min. sink

2.2 fps

@

45 mph

OTHER

Designer A. C. Cordas

References:

7-59, p.

13 photo,

specs.

Photo by Gene Whigham

References: 7-60, p. 10 photo, specs; 3-61,

p.

7

photo; 10-61, p. 13, photo.

44.5-ft. span. It features a constant-chord

Gene Whigham

of San Diego,

Calif., first

wing with 25%-chord flaps of

22-ft.

span,

flew his GW-I

in

1959 with a

span of 40

ft.

and a fiberglass nose. It made a Diamond

Wing tips were added in 196 I giving it a

goal flight

in

1962. Colored yellow. EXP.

3



TWEED GT-l

N7830C

SPECIFICATIONS

Span .

, ..

, , , , ,SI ft.

Area 155 sq.

ft.

Aspect ratio . . lb.7

Airfoil

NACA 43012A

Empty weight . 4b9 lb.

Payload

250

lb.

Gross weight

719 lb.

Wing loading ..

, ,4.8

Ib.lsq. ft.


PERFORMANCE

L/D

max . .

29@

47

mph

Min. sink 2.2

fps

@ 42

mph

OTHER

Designer,

,George

Tweed. Jr.

References: 7-bO; p. 10, photo, specs.

George Tweed's

GT·I first flew in

19bO and

was entered in

the

Nationals

that year but,

to quote George, "proved to be a

victim

of

technical obsolescence." However, both he

and

Jack Green earned their

Gold

badges

with it. Lower half of

nose

was made from

drop tank and upper half is fiberglass

laid

up

in the drop tank. It features a retractable

Photo by George Tweed

wheel and

is

colored brown

and

white. Cur

rent owner is Larry Erickson of

San

Diego,

Calif.

EXP.

GREE'N-TWE'ED GT·2

N94282

SPECIFICATIONS

bO ft.

150

sq. ft.

24

NACA

b5

3)-b 18

Span

Area

Aspect ratio

Airfoil

Empty weight

.

'" , .bIO lb.

Payload

250 lb.

Gross weight 8bO lb.



PERFORMANCE

L/D max

. . .

35 @ 57 mph

Min. sink

, ,2.1 fps @ 44 mph

OTHER

Designers George Tweed,

Jr., and

Frank

Green

References:

4-b3 p. 2,

photo,

specs.

As a

successor

to the

GT-I,

Frank

Green

and George Tweed,

Jr., of

La Mesa,

Calif.,

turned

out the

G T-2 in 19b3. It features a

3-piece wing, dive brakes and a vee tail.

It

is

still in the

c1ean.up" stage

so

should

end up

with beHer performance. Colored

white. EXP.

REBEL

N1392N

SPECIFICATIONS

Span

,48 ft.

Area

102

sq. ft.

Aspect

ratio . .

23.8

Airfoil NACA

b5

3)-518

Empty weight

403 lb.

Payload

220

lb.

Gross weight

b23

lb.

Wing

loading

"b.1 Ib.lsq.

ft.

Structure: all-metal,

foam/fiberglass

aft

of

spar.

PERFORMANCE

L/D max , , , ,

3 7 5

@ 57 mph

Min. sir \

2fps@51 mph

OTHER

Designer Irving Prue and Lyle

Maxey

Referen' es: 8-59, p. 9,

photo; l-b2 cover.

The Rebel was

created

in 1957

by

Bob

Brown, now in Lancaster, Calif., by mating

the

wing

from the famous Jenny-Mae

sail

plane (a

Lyle

Maxey wing on

a Prue/Frank was lightened

by

using

fiberglass over foam

Kerns

fuselage/tail).

with

which Maxey

won aft of the

spar.

It features a

vee tail

and

the 195b Nationals,

to a

Prue 215 fuselagel

retractable wheel.

Brown now has it up

for

tail.

Dive brakes were

added

and

the

wing sale. Colored red and

white.

EXP.

S O R I N G

2



hoto

y

eorge Uveges

two-place

tandem

fuselage

with a

conven

tional

tail.

He completed his Silver and

Gold badges

in

the

ship

and made

a

num

ber

of

200-mi. X-C's.

It was

slightly

dam

aged

in

the /962 Nation ls

and will be

Vern Hutchinson of Lawnda,le, Calif., com

pleted the original version of the

HS-127

in

Dec.,

1956,

which

had a

two-place, side

by-side

seating fuselage

with

vee tail. In

Aug., 1960, he

put the

wing

on the

present

HUTCHINSON

HS-127

N62P

SPECIFICATIONS

Span

55.5

ft.

Area

132

sq. ft.

Aspect ratio

, 23.5

Airfoil

NACA

65

(3)-618,

a=.05

Empty weight ,804 lb.

I 'ayload

.606

lb.

weight

, ,1410 lb.

Wing loading

, 10.7 Ib.l

sq.

ft.


PERFORMANCE

L/D max 33

@

67 mph

Min. sink 2.5

fps @

58

mph

6-fps

sink

@

110 mph

OTHER

Designer , ,Vernon Hutchinson

References: 4-6 I p. 3, photo.

repaired by it< new

owner,

Jaap Schmidt of

Van

Nuys, Calif. Featured

are

balanced

trailing

edge

dive brakes and a

retractable

wheel.

Colored white

and

red. EXP.

MATTESON M-l

N67l6C

SPECIFICATIONS

Span

51

ft.

Area

130 sq.

ft.

Aspect ratio

,20.3

Airfoil

NAC A

63-518, 4412

Empty weight ,515

lb.

Payload ,215 lb.

Gross weight

730

lb.

Wing

loading

5.6 Ib.lsq.

ft.


wings

and

tail, wood

fuselage.

PERFORMANCE

LID

max

3,1,5 @

48

mph

Min. sink

2.17 fps

@

45 mph

6-fps

sink @ 82

mph

OTHER

Designers Fred

Matteson

and

Alfred Vogt

References:

WS-II, p. 230; 8·59,

1'. 13,

arti

cle;

7-60 cover.

Price: plans,

49.50, postpaid,

from Fred

Matteson,

841 Seale, Palo

Alto,

Calif.

Photo by Fred

Ha

II

Fred

Matteson of Palo

Alto,

Calif., com

pleted

his Mol in 1959

after

a

tour of duty

and materials.

It

features

a

foam-filled

wing

in Germany where construction was begun

leading edge, 3-piece wing, take-off dolly,

at Martin

Schempp's factory

after

Afred

large

lower-surface dive brakes

and

is col-

Vogt

redesigned it to German standards ored white. EXP.

OLDERSHAW 0-2

N7799C

SPECIFICATIONS

Span

49.2

ft.

Area

I

06 sq. ft.

Aspect ratio

,22.8

Airfoil

,

,63

3)-b

18, 63

(2

).615

Empty weight 535

lb.

Payload

260

lb.

Gross

weight ,

,795 lb.

Wing loading . , . '

7.5

Ib.lsq. ft.

Structure:

all-wood.

PERFORMANCE

L/D max

, .

37 @

67 mph

Min. sink

2.1

fps

@

55 mph

OTHER

Designer Vernon Oldershaw

References: 8-6 I p. i photo, specs;

12-6 I

cover.

33

Photo

by

Don Winslow

Vern

Oldershaw of Bakersfield, Calif.,

wanted

ing

one

of 294.6

mi. It

has dive brakes and

something comparable

to the RJ-5 so

built

features a vee

tail

and

retractable wheel,

his

0-2

which first flew in June, 196 I. He

although a fixed wheel is being installed so

entered j t in

the

1962 and 1963 Nationals,

the

ship

will

qualify for the Standard Class.

making a

number

of 200-mi. flights, includ-

EXP.

MAY 1964



J

Dick Johnson of Dallas, Texas, finished his

two· place, "double-bubble" Adastra

in 1960,

when

it

had

a

tee

tail and Eppler

150

air

foil,

and

flew

it

in

the

World Champion

ships in Germany (15th). Later

that

year

he

installed the

present

conventional tail

and then

extended

the

wing

trailing edge

10%

of the

chord to convert

the

airfoil

to

y

Henry

Ulttmer

an

Eppler 151. He placed

7th

and

2nd

(by

17

poin·ts), respectively, in the 1961 and

1962

Nationals

with it. It

has

dive brakes

and is colored white with red trim. EXP.

References:

WS-II,

p. 228;

2-60

p.

8,

article,

specs,

photos

a'building; 5-61,

p. i,

photo;

1-62, p. 4, article on development; 9-62

cover.

JOHNSON

ADASTRA

N4921C

SPECIFICATIONS

Span

.56.33 ft

Area

178

sq.

ft

Aspect ratio

17.84

Airfoil

Eppler

151

Empty weight

649 lb.

Payload

391

lb.

Gross weight

1040

lb.

Wing loading.

5.85 Ilb./sq.

ft.

(4.65 solo)

Structure:

all-wood.

OTHER

L/D

max

(solo)

.37

@

60.4 mph

Min. sink

(solo)

2.28

fps @ 54.6 mph

6-fps sink

@

(solo)

88.2

mph

P RKER T·BIRD

N8008H

SPECIFICATIOIIIS

Span

50.7 ft.

Area .120 sq. ft.

Aspect ratio

21

Airfoil .

Wortmann FX

05-191

Empty

w ~ i g

545

lb.

Payload

180

lb.

Gross

weight

725

lb.

Wing

loading

6

Ib./sq.

ft.

Structure: all-wood, fiberglass

covered.

References: 2-62,

p.

16,

article, specs;

8-62,

p. 18, article on test flights,

3·view;

5-63,

p. 6, pil"t report.

The T-Bird gets its

name from the distinctive

tee tail it sports. Begun

in 1956,

it

first flew

in 1962

and

placed 8th in

the

Nationals

that

year

flown by its

designer/builder, Ray Par

of Inglewood, Calif. It

has

dive brakes,

is colored

white with red

numbers

and

has

flown

90 hours

to

date.

EXP.

Photo

by

Kirk

Harris

Photo y

Pete Bowers

The

L il

Dogie was developed in 1940 by

Irv

Culver

and

\'{ally Neugent as

a

short

span

high

[for

then

lowing loaded

ship

with

good

performance. Originally it

was

called

the "Screaming Vliener" because

of

the

shrill

whine it

made while

climbing on tow.

It

a number of

200-mile flights, Ray

Parker placed 6th with it in the 1946 Na

tionals at

Elmira,

and

Paul

MacCready,

Jr.,

brought

it

in

2nd

in 1947, setting a

230·

mi.

world G&R

record in the

process.

The

present

owner,

Wally Wiberg of

San

Diego,

Calif., acquired it later and flew it in the

1952 and 1954

Nationals. Wally won't

be

flying

it

again so has

it for s.le.

EXP.

OTHER

Designer .Irv Culver

References: N·D 41, p.

6, article;

J-F 47

cover, p I I I capi"ion.

LlL DOGIE

WAS SCREAMING WIENER)

N44W WAS N14287)

SPECIFICATIONS

Span _ . .36.7 ft.

Area

109.7sq.ft .

Aspect ratio

12.1

Empty

weight

.

350

lb.

Payload 190 lb.


Wing

loading .4.9 Ib./sq. ft.

Structure:

mostly

wood, some

fabric.

RIGID MIDGET

N90871

SPECIFICATIONS

Span

3.4

ft.

Area

100

sq. ft.

Aspect

ratio .14.5

Empty weight

.365 lb.

Payload

185

lb.

Gross weight

550 lb.

Wing loading

.5' .5

Ib./sq. ft

Structure: wood/fa bric

wings and tail, wood

fuselage.

PERFORMANCE

L/D

max

.27.5

@

55 mph


OTHER

The

Rigid Midget

is

owned

by Bill

Bowmar

Design er

,

.Irv Culver

of Altadena, Calif., who

finished building it

some time in Texas for a Nationals where

in 1947. It

has the same fuselage

and

tail

as Ray

Parker

flew

it on its longest flight

of

the Screaming Wiener

but

the wing design 235

mi. Stall

speed is 48 mph. Presently

was different,

resulting in

better

perform. being recovered, likely

to

be recolored from

ance. It has been flown 900 hrs .• including yellow to white. EXP.

34

S O R I N G



TRAGER·BIERENS T-3 ALIBI

N909D

SPECIFICATIONS

Span 47.4 ft

Area

140

sq.

ft.

Aspeet

ratio 16

Strueture:

wood/fabric

wings,

metal fuse

lage and tail.

PERFORMANCE

LID

max

.28

@

48 mph

Min. sink 2.2 fps

@

44 mph

OTHER

Designers Kempes Trager and John 8ierens

References: M-J 52, p. 6 article, 3-view;

5-0 55, p.

14

story of winning Nationals.

Kempes

Trager and John

Bierens

started

on

the T-3 in 1949 and finished it in 1951. The

objeet was to

obtain

performance without

building a complete sailplane from scratch

so a set of

L K

wings were used on

an

original all-metal

fuselage

with

vee tail

and

retractable

wheel.

Later

the wing was re

built

around the

L-K

spars

and

much

work

was

put

in on the surface condition. At

the

same

time

a

newall-metal

tail was made,

iust in time for Kempes to enter the 1955

Nationals

at

Elmir

which

he

won.

The ship

was later sold

to

its present owner, Guenther

Christiansen

of Atlantic City, N.J. EXP.

lEFFLER-MacFARLANE lM-l

N9646Z

SPECIFICATIONS

Span

50

ft

Area . 166 sq. ft.

Aspeet ratio

15

Airfoil

NACA

44

J

8, 4409

Empty

weight

500 lb.

Payload

.350 lb.

Gross weight

850 lb.

Wing

loading

5 Ib.lsq. ft.

Structure:

wood/fabric

wings

and

tail, steel·

tube/fiberglass

fuselage.

PERFORMANCE

L/D max

30

@

45 mph

(est.)

The LM-I is owned by AI Leffler of Los Ala

mitos, Calif., who designed and

built

it in

co-operation with

Walt

MacFarlane. It first

flew in Nov., 1963, and features a 2-wheel

DAAMS FALCON

N86430

Fred Daams of

Prescott,

Ariz.,

created

an

other variation-on.lhe-set-of-L-K-wings theme

with his Falcon, completed in 1962. The

fuse

lage is ali-metal, using a pylon tank for

the

forward

part,

and

the

vertical tail and

elevators are from a Cessna 140. The sta

bilizers fold up for

trailering.

The canopy is

Irom

an F-04

and

is

hinged

at the

rear,

openine; upwards. Estimated

glide angle

is

28 or 29. Ref. 8-62, p. 5, article. EXP.

Photo by George Vveges

retractable gear.

At the present

time

modi

fied L-K wings are in use but plans are to

replace

them

with a 56-ft. wing using a

Wortmann

FX

05-191 airfoil. EXP.

Sidney Yahn

and

Lou Falconi of Ros

down tail surfaces, retractable tow hook and

N.M., converted an L-K into the SL-I

lengthened Fuselage. The ship is

owned

by

1960 to March, 1963. It features a high

Yahn, now on duty in Montgomery, Ala.,

wing, no incidence, double

spoilers, cut-

but is stored in Odessa, Texas, until this

FAlCONI-YAHN Sl-l

N74072

SPECIFICATIONS

Span

50

ft.

Area .. 166 sq. ft.

Aspect

ratio

. _15.06

Airfoil NACA 4418, 4413, 4409

Empty weight

.567

lb.

Payload

308 lb.


Wing

loading

5.27 Ib.lsq. ft.


and

tail, steel·

hobe/fabric fuselage with fiberglass

nose.

summer

when it will be

activated

again and

cleaned up. It has logged

60

hI's. of flight

time. EXP.

M Y 1964

35



DOTTIE S

Nl031C

SPECIFICATIONS

Span .. 50

ft

Area 150 sq. ft.

Aspect

ratio

. .

16.6

Airfoil NACA 4415


Payload .. 200 lb.

Gross

weight 600

lb.

Wing loading

. . .

4

Ib./sq.

ft

Structure;

wood/fabric

I-strut-braced wings,

steel-tube/fabric

fuselage,

wood/fabric

tail.

PERFORMANCE

L/D max

. . . 20@45mph

Min. sink

.2.5 fps @ 40 mph

OTHER

References: 8-6 I, p. 7

photo,

specs.

~ r n Kelsey of Salt Lake City finished his

two-olace K·16 in 1961 and has flown it

over 100

hours

since, including a

number of

The

Dottie

S was

begun

as a High School

project by

George Bennett and

Richard

Carter of

State

College, Miss., and finished

in 1957 at Mississippi

State

with the help

of Guy Storer.

The wings are based on the

shorter

ones

of Art

Schultz's

"Midwest,"

the

KENNEDY K-W

N371M

SPECIFICATIONS

Span .33 ft

Area .128

sq.

ft

Aspect ratio 8

Airfoil Clark Y

Empty weight 390

lb.

Payload

.210

lb.

Gross

weig ht .600 lb.

Wing

loading

4.7 Ib.!sq.

ft

Structure;

wood/labric,

strut-braced, con-

stant-chord

wi,ngs; steel-tube/fabric fuse

lage and

lail.

PERFORMANCE

L/D max 1 6 @ 4 6 mp h

Min. sink

4 fps @ 44 mph

6-fps sink @

.54 mph

OTHER

Designer

. . Harold Kennedy

Photo by

Ro,e Marie

Licher

X-C's,

one

of which earned his Diamond

goal leg. Colored white with red trim. EXP.

Refere"ces; 7-63, p. 13,

photo.

Harold Kennedy

of Dodge

City,

Kansas,

pieced

together

his K-W glider with the

help of Floyd Watson in 1957. It is about

75 /0

airplane

parts, aft

fuselage and verti-

cal tail are Aeronca

Chief narrowed

down,

horizontal tail is Taylorcraft cut down

to

John Bock of Long Beach, Calif., designed

and

built

the Bock lover a number of years

and it fir,t flew in 1960. To date it has 180

hrs.

of flight

time, including

one 7;50-hr.

flight and one to 17, 100-ft., both in ther

mals. Colored blue and white with Day-glo

red

trim.

EXP.

horizontal tail is from an L-K and the verti-

cal tail was scaled down from that of a

TG-3A. The dolly wa, later replaced with

a fixed

wheel.

'No spoilers. Colored white.

EXP.

K LS Y K-16

N5050K

SPECIFICATIONS

Span . . 48 ft.

Area . .

175 sq.

ft.

Aspect ratio . . 13

Airfoil mod. Gottingen

IEmpty

weight . . . ,634

lb.

Payload ..

516

Ib_

Gross

weight .. I 150 l b.

Wing loadinq

. . .

6.5 Ib.!sq. ft

Structure;

~ t r u t b r a c e d wood/fabric wings,

steel-tube/fabric

fuselage.

PERFORMANCE


OTHER

Designer Wm. Frank Kelsey

8 ft.,

and

wheel, wings and struts

are

Aer

onca K

(spoilers added).

Flight

time

totals

270 hrs., including 180 by Harold's two

teen-age

sons. It has made some X-C's, one

of 140 mi. Colored white with red trim. EXP.

BOCK I

N9190Z

SPECIFICATIONS

Span

.34 ft.

Area J 02 sq. ft.

Aspect

ratio

. . . . I

' .3

Airfoil . . NACA 63(3)-618

Empty weight

. . . 395 Lb.

Payload 205 1 0.

Gross weight . .

600

lb.

Wing loading .5.7 Ib.!sq. ft.

(normal)

Structure;

all-metal, some fa bric;

I-strutted,

constant-chord

wing,.

PERFORMANCE

L/D max 18@55mph

Min. sink

4.4 fps @ 53

mph

6-fps sink @

.66

mph

SO RIN

6




SCHULTZ ABC

N25699

SPECIFICATIONS

Span

48.5 ft.

Area

175 sq. ft.

Aspect ratio 13.5

Airfoil

NACA

b212 2412

Empty

weight .300

lb.

Payload .170 lb.

Gross weight

.470

lb.

Wing

loading

2.7 Ib.lsq. ft.

Structure: 2-strut-braced

wood/fabric

wings,

steel-tube/fabric fuselage.

PERFORMANCE

L/D max

.18

Min. sink

2.8 fps

OTHER

Designer Art Schultz

References:

5-37, p. 4

article, construction,

specs, 3-view; 7-37, p. 5,

photo,

specs;

8-37, p. 12

photo;

J-A 55, p. 4, photo.

The original ABC sailplane was built by

members of the A.B.C. Glider Club of De

troit, Mich., in 1937 and won a design com

petition

for

new

gliders

at

the

1937

Na

tionals. Plans

for the

design were later sold

and

some

addditional ABC's

came

into

be

ing. The only one recently active is pictured

here, now owned by Larry Bell of Temple

City, Calif.

EXP.

SCHULTZ NUCLEON

N7924A

SPECIFICATIONS

Span

.46

ft.

Area . 13 I sq. ft.

Aspect ratio 16

Airfoil NACA 65

(2)-415,

b4 I)

-A212

Empty weight

.345

lb.

MIDWEST

MU·l

N31680

SPECIFICATIONS

Span

3b

ft.

Area 172 sq. ft.

Aspect

ratio

7.5

Airfoil

.NACA

4412


Payload 190 lb.

Gross weight .. 513 lb.

Wing

loading

.3 Ib.lsq.

ft.

Structure: 2-st rut-braced , constant-c hord,

wood/fabric

wings;

steel-tube/fabric

fuse

lage.

PERFORMANCE

L/D maX

15@

36

mph

Min. sink

2.9 fps @ 30

mph

6-fps sink @

48 m'Ph

OTHER

Designer .

Art Schultz

References: M-A 45, p. 6, 22, article, curves,

specs, 3-view.

Developed in

1944,

the

Midwest Utility

MU-I received an ATC

and

was used in

the Army Glider Training Schools. The only

one known to still exist is owned by

the

Prescott (Ariz.) Soaring

Club.

rayload . . .

..

.

..

. . . 190 lb.

Gross

weight

535 lb.


Structure:

I·strut-braced all-wood wings,

steel-tube/fabric wings and braced tail.

PERFORMANCE

L/D max

.22

Min. sink

.3.3 fps

OTHER

Designer

Art Schultz

References: J-F 55, p, 3, article, specs, 3

view.

Art Schultz

completed his Nucleon

in

1954,

Photo by Ralph Wodtl;

incorporating a number of unique features.

The laminar airfoil is stabilized with styro

foam blocks; to save weight, struts

are

used

but

they

are

fixed at both

ends and cuffed;

full-span flaps, with drooping ailerons, are

featured; and the horizontal tail

folds

up

for trailering.

It was flown in the 195b

Na

tionals and made several 200-mi. flights.

Ralph Wodtli of Coquille, are., owns it now

but

has it up

for

sale. It is hangared at

the

Sweet

Home,

are.,

Airport. Colored white

with blue trim. EXP.

The

Dale Hawk

2 was originally designed

and built in 1939 by Leland Hanselman and

Walter

Haufe (ref. 4-39

pp.

7

12; F.M 40,

pp.

b

8).

Hanselman's

home

town

was Dale,

Wis., hence the

name.

It made a

9:50·hr.

M Y 1964

Aight in '940. After storage

during

the

war

it

was rebuilt by the present owner, C. M.

Van Airsdale of Madison, Wis., with the help

of

Hanselman

and

Harry

Edwards. It has no

spoilers

and is colored

coppertone

and

Di-

DALE

HAWK

2

N18278

SPECIFICATIONS

Span

40.5

lb.

Area

140sq. f t .

Aspect ratio

.12.5

Airfoil

. U.S.A. 35A

Empty

weight

.. 300 lb.

Payload

190 lb.

Gross weight

.490 lb.

Wing

loading

3.5

Ib.l

sq. ft.

Structure:

wood/fabric.

PERFORMANCE

Min. sink

.3

fps @ 4 0 mph

ana cream.

Van Airsdale flies it at the Port

age, Wis., Airport. EXP.

37



Photo y Pete Bowers

EXTRA COPIES

All extra supply of this "Direc

tory of All Active Sailplane 1\1od-

els in the UIlited States" .issu··

has been

printed

and copies

are

available for each. Buv some

for your local

~ I i r p o r t s

s ~ h o o l s

libraries, etc

..

or for your maga

zine tahle to

take

the

\ V · ~ a r

of

curiolls finl(ers. Order from SSA.

Box 6607( Los :\ngeles, Ca1if.

g0066.

Vern

Hutchinson made up

The Thing

from

a set

of

partially completed Aero .T. . G-2

wings, an

L K

horizontal tail and an

original

fuselage. After

this

photo

was

taken the

regular

ailerons

were

locked

and faired over

DETROIT GULL

Gl

PRIMARY

N52Y

SPECIFICATIONS

Spon

38

f.t

Area 170 sq. ft

Aspect

ratio 7

Airfoil

U.S.A.

35

Empty

V eight

.200

lb.

Payload 200 lb.


VI/ing loading 2.36

Ib./sq.

ft.

Structure: wire-braced, constant-chord wood/

fabric

wings and tail.

PERFORMANCE

LID max.

.8

@ 30 mph

PINKY (WAS "THE THING")

N4624V

SPECIFICATIONS

Span 40 ft

Area

140

sq. ft.

Aspect ratio I 1.5

Airfoil

U.S.A.

35B


Payload

200 lb.

Gross weight

735

lb.

Wing loading

5.25

Ib./sq. ft.

Structure: vee-strutted

wood/fabric

wings,

wood/fabric tail, steel-tube/fabric fuse

lage. •

PERFORMANCE

LID

max 16

and a set

of external

airfoil

ailerons were

added on the

trailing

edge. The ship was

later acquired

by its present owner, Clark

Spillers

of Saugus,

Calif.,

and renamed

"Pinky." EXP.

Photo by Dick Smith

Pete Bowers of

Seattle,

Wash., has

the

only

known

Detroit Gull

primary

glider that is

likely to fly again. Units were produced by

Detroit Aircraft in the early 30's

with

ATC

No.

I,

then Stone Aircraft

acquired

the

rights and

sold

some

p

ans

. The one Bowers

has

was almost completed by

Peter

Eyrud

of

Walla

Walla, Wash., stored during the

war,

acquired

by Bowers in 1954 and com

pleted. Although it is flown occasionally by

l'ete

he did writE

an article

on

the

subiect,

Don't Build a

Primary

(ref. M-A 57, p. 8).

EXP.

An

illustrated,

18-page booklet

designed

to

answer

the

questions

of

the uninitiated.

Price: 25 cents. postpaid

10

or

more. 15 cents each

from

SSA Box 66071

Los Angeles,

Calif.

90066

ZIPPO

CIGARETTE

LIGHTERS

Brush-chrome finish

EMBLAZONED WITH

THE SSA SEAL

$3.50 each from

SSA Box 66071

Los Angeles. Calif. 90066

NO MORE FLIGHTS

ABOVE 18,000 FEET?

Concluded

from page 4

Copies of these proposals 6.3-

WA-74) and (64-WA-9) are avail

able, at taxpayer's expense, hom:

Chief, Airspace Regulations

and

Procedures Division

Federal Aviation Agency

Washington,

D.C.

:2055.3

(Also, Air

Route

Traffic Control

Centers have copies for refu-ence. )

Comments should be sent to the

same place immediately. And after

yOll

have

sent your comment, send

a opy to your Airspace Commit

tee, Box 18, Savoy, Illinois, so we

can file a true

membership

position

statement

with the

FAA.

S O R I N G

Documents

Directory of All Active Sailplane Models in the United States (Soaring, May 1964)