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ARR No. 3125
i
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS
ORIGINALLY ISSUED
September 19h3 as Advance Restricted Report 312$
REPRESENTATIVE OPERATING CHARTS OP PROPELLERS TESTED
IN THE NACA 20-FOOT PROPELLER-RESEARCH TUNNEL
By W. H. Gray and Nicholas Mastrocola
Langley Memorial Aeronautical Laboratory Langley Field, Va.
CASE FILE COPY
WASHINGTON
NACA WARTIME REPORTS are reprints of papers originally issued to provide rapid distribution of advance research results to an authorized group requiring them for the war effort. They were pre- viously held under a security status but are now unclassified. Some of these reports were not tech- nically edited. All have been reproduced without change in order to expedite general distribution.
L - 286
NATIONAL ADVISOR! COMMITTEE FOB AERON/UTICS
ADVANCE RESTRICTED REPORT
REPRESENTATIVE OPERATING CHARTS OF PROPELLERS TESTED sO no 7 IN THE NACA 20-FOOT PROPELLER-RESEARCH TUNNEL •i
By V. H. Gray and Nicholas Mastrocola
Extensive teats of full-scale propellers have "been made in the 20-foot propeller-research tunnel (PRT) at the Langley Memorial Aeronautical Laboratory during its many years of operation. The results were usually presented in the form, of charts showing thrust coefficient, power coefficient, and efficiency, each plotted separately against V/nD. The type of chart now "being employed "by airplane and propeller manufacturers for performance estimates consists of power coefficients plotted against V/nD with lines of constant effi- ciency superimposed. As a result of numerous requests to issue this type of chart directly and on a large scale, the present report has "been compiled from data taken from a series of fairly recent reports . Charts are presented only for the conditions considered to "be useful in present-day design (see table I), although charts covering other conditions have "been developed and are available.
In the preparation of the plots presented, the data were cross-faired and do not necessarily check exactly the previously published data . The power coefficients of all dual-rotating propellers in this report represent the sum of the power coefficients of the front and rear propellers and are for the test conditions in which blti.de angles of the front and rear propellers were set to absorb approximately equal power at peak efficiency only.
The usual coefficients and symbols have been used and are defined as follows: .
CP power coefficient ''engine power>
Cm thrust coefficient /effective thrusti
V~^ 1 T\ propeller efficiency (C^/Cp) (V/nD)
and
p mass density of air, slugs per cubic foot
SACA TABLB I.- REPRESENTATIVE PROPELLER-OPERATIHO CHARTS
IN I
N
Bl*de Number Propeller Figur« activity
factor of
bladea Rotation location Body configuration Reference
Blade dea Ign, Bureau of Aeronautica 5868-9
1 80 3 Single Tractor Radlal-englne nacelle without wing
Blermann, David, and Hartman, Edwin P.: Teat* of Five Full-Scale Pro- peller« In the Presence of a Radial and a Liquid- Cooled Engine Nacelle, Including Testa of Two Spinnere. Rep. lo. 642, NACA, 1936.
2 8o 3 —do— —do- Liquid-cooled engine nacelle without wing
Blermann, David, and Hartman, Edwin P.: Tests of Two Pull-Soale Pro- pellera with Different Pitch Distributions, at Blade Anglea up to 60°. Rep. Ho. 656, NACA, 1939.
Bl »de dealgn, Hamilton Standard 3155-6 and 3156-6
3 90 2 Single Tractor Streamline nacelle without wing
Gray, w. H.: «Jind- Tunnel Tests of Single- and Dual-Rotating Tractor Propellers at Low Blade Angles and of Two- and Three-Blade Tractor Pro- pellers at Blade Angles up to 65°. NACA A.R.R., Feb. I943.
1+ 90 3 —do— --do—- Blermann, David, Hartman, Edwin P., and Pepper, Edward: Full-Scale Tests of Several Propellers Equipped with Spinners, Cuffs, Airfoil and Round Shanks, and NACA 16-Seriea Sections. NACA A.C.R., Oct. I9I4.O.
5 90 3 —do— „do Streamline nacelle with wing
Oray, W. H.: Wind- Tunnel Tests of Slngle- and Dual-Rotating Tractor Propellers at Low Blade Angles and of Two- and Three-Blade Tractor Pro- pellers at Blade Anglea up to 650. NACA A.R.R., Feb. I945.
6 90 4 —do— —do— do "^ Biermsnn, David, and / Hartman, Edwin P.: Wind-
7 90 k —do— —do do ( Tunnel Tests of Four- f and Siz-Blade Single- and
i 8 90 6 —do— —do — j Dual-Rotating Tractor Propellers. Rep. No. 747, NACA, I942.
9 90 8 .-do— —do- do Biermann, David, and Gray, '*. IT.: Wind-Tunnel Test3 of Eight-Blade Single- and Dual-Rotating Propellers in the Tractor Position. NACA A.R.R., Nov. 1941.
10 90 3 Single , Pusher Streamline nacelle without wing
\ Biermann, David, and Gray, j W. H.j Wind-Tunnel Tests
11 90 4 —do- —do— > of Single- and Dual- 12 90 6 Dual —do \ Rotating Pusher Propellers 13 90 8 —do— —do— / Having from Two to Eight
Blades. NACA A.R.R., Feb. 1942.
: Blade dealgn, Hamilton S tandard 3155-6-1.5 and 3 156-6-1.5
14 135 3 Slngla Tractor Streamline nacelle Biermann, David, Gray, I W. H., and Maynard, Julian i with wing
15 135 k —do— —do— do [ D.: Wind-Tunnel Tests 16 135 6 Dual —do— ——do , of Single- and Dual- 17 135 8 —do—
i
—do—
1
1 Rotating Tractor Propellers of Large Blade Width. NACA 1 A.R.H.. Sept. 1942. |
NACA 1 blocs * 5 äivieioriß on 1/i'O Engr, scale)
Fig. 1
I
NA.CA (1 bloot • 5/601)
Fig. 2
OP
1.0 1.2 I.U 1.6 1.8 2.0 2.2 2.It • 2.6 2.8 J.O
V/nD
NACA
i
v/no
NACA Fig. 4 (l fclyot - 6/6.°',i
8 i
V/n D
i •si
NACA
.95
zEE£&iB3M
1 frloo* • 5/60*) Fig. 5
fflK
THREE-BLADE TRACTOR PROPELLEH IN FRONT HUB
WITH WING
TEN-FOOT PROPELLER 5155-6 TESTED AT PRT, NACA, APRIL I9H0. SEE NACA A.R.R. "»HMD-TUNNEL TESTS OF SINGLE- AND DUAL-ROTATING TRACTOR PRO- PELLERS AT LOW BLADE ANGLES AND OF two- AND THREE-BLADE TRACTOR PROPELLERS AT BLADE ANGLES UP TO 65" 8r GRAY, FEB. 19k).
V/nD
NACA (1 bloc* - f/,60').
Fig. 6'
^0 V»
i
NACA
.100
.95
(1 tlaot - 5/60') Fig. 7
fflTWFTTTHTHHIWi FOUR-BLADE
DUAL-R0TATIN6 TRACTOR PROPELLER KITH KINS
_L.1-L.LL-L 6.0 6.5
N
v/nD
^
*
v/n D
NACA (I bloOr . 5/60')
Fig. 10
i
v/n D
25 HACA U cloc/ • 5/6O
Fig. U
v/n D
NACA
2.1t •
2.5 •
SIX-BLADE DUAL-ROTATING PUSHER PROPELLER
WITHOUT WING
TEN-FOOT PROPELLERS 3155-6 4 3156-6 TESTtO AT PRT, NACA, JAN. 19I4I. SEE NATA A R R 7H
•*INO-TUNNEL'TESTS OF SINGLE- AND DUAL-ROTATING PUSHER PROPELLERS HAVIIW FROM T*0 TO EIGHT BLADES' BY BIERMANN AND GRAY, Ftß. 1942.
1.7 •
1.6-
1.5 •
1.5
ti
C
(1 c locit • S/60
-:H Yl
I :/-
/: r.
V
Fig. 12
-U4-U-
v/n D
NACA 5;or
H block - 5/60") Fig. .13
h.8
lt.6
k.b
ll.2
il.O
5.3 •
5.1* •
5.2 :
5-0-
EIGHT-BLADE DUAL-ROTATING PUSHER PROPELLER
WITHOUT (VIMS
TEN-FOOT PROPELLERS 5155-6 4 5156-6 TESTED AT PRT, NACA, JAN. 19kl. SEE NACA A R R "*IND-TUNNEL'TESTS OF SINGLE- AND DUAL-ROTATING PUSHER PROPELLERS HAVING FROM TuO TO EIGHT BLADES" Br BIERLtANN AND GRAY, FEB. I9U2.
Z.U-
2.2-
c
1.1. •
MAC A (1 block - 5/60"
Fie-. 14
c
9 i ! *' 1
- - r — -
*" "" X __, I
._.._._ ... THREE «IDE BLADES IN REAR HUB -H
_ __. __ _ . . ._ _ KITH WING
— - 4 — -- j —• j- — <^ ^^> —
^*i" - •"•—
—j_— — - - — -4— -4~ --— — • / •
- - . - - TEN-FOOT PROPELLER 5155-6-1.5 _ -. - ... ... . _.. . - . TESTED AT PRT, NACA, FEB. I9U2.
. , SEE NACA A.R.R. IT ..... JI.J "KIND-TUNNEL TESTS OF SINGLE-
] , AND DUAL-ROTATING TRACTOR PRO- PELLERS OF LARGE BLADE 1IDTH"
, , BY BIERMANN, GRAY, AND HAYNARD, '•' SEPT. 1912.
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• /^?> JGV -^44 ^/' ^ / -1- ^ -A / •/ * % '5Tt_t^> / w?Mi4 ^ v^'^ "" / r y-A-^-M- -?' /j /V1
J i7t?s» 1/ 7 v l/'v i v ^ET\*y /- \,Y *x/ • Y / YX 35>>*. ILL "^Li / f \ / Is' \ L j. A JL ^ i ^ ^ Jv' /
r[ rr ^r / r?j/ /1v "^, T « -LL L./X.-.J, A/^_.EZ^ ^ i !!/^'/__!„. ... 5 ^i^i ^4^ \z" ^"1^^Ä-'-i^y-S^^I-lt-1-" 7?»iyi/^y>7N//LT1\://iTvt ^f^i^ «•*"-ye'^A^'^^K^u" - - l4ri I--
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4 ttrr'^l^^^^^fT^ 47rf§^Min nn>n I'"- ~^ss'\ \\o'\ -fiat 7SR=$S^\~ 1.5 2.0 2.5 5.0 >.5 U.o 1.5 5.c 5.5 6.0 6.5
v/n D
to M^A
(1 bloct • 5/60 Fig. 15
5.5 " li.O. li.5 5.0 5.5
v/n D
V) NA-:A 5.0
it.8
k.6
ll.li
It.2
ll.O
5.8
5-6
3.U
5.2
5.0
2.8
2.6
2.It
c
i.6
i.It
• k
(1 blact - 5/60-) Fig. 16
SIX WIDE BLADES DUAL-ROTATING TRACTOR PROPELLER
WITH WING
TEN-FOOT PROPELLERS 5155-4-1.5 t 5156-6-I.5
- TESTED AT PRT. NACA, FEB. I9k2. - SEE NACA A.R.R. - "WIND-TUNNEL TESTS' OF SINGLE- - AND DUAL-ROTATING TRACTOR PRO- _ PELLERS OF LARGE BLADE WIDTH*
BY BIERMANN, GRAY, AND l*YNARD, SEPT. I9ll2.
v/n D
(to NACA
(I bloclc - 5/SO") Fig-. 17
,
-•• - - --
_ — ......_ —
U li ' - -4---- j -J4-
•
a 5«8
, >.© EIGHT WIDE BLADES
1 DUAL-ROTATING TRACTOR PROPELLER * WITH HING
f"- 5-4- -
A
5.2 *
-- : ^-"J ~^v. <Z f J> ^n_ ^ .. .. ...... 3-0 - if _ Q
-- •
^ ^ - TEN-FOOT PROPELLERS 5(55-6-1.5 * '
- • JI56-6-I.5
._t -_ £- -- "KIND-TUNNEL TESTS OF SINGLE-
2.1,— - - ^z-~'/Z-*/t/.FjZ-~ : •" ---• AND DUAL-ROTATING.TRACTOR PRO- __" "
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v/n D
ECJFKia (03K3«?}
. Gray, H. H. I'aatrocola, N.
AVTKOSIS) AM2ß.TITl£
TOMSTtTma
DiVIStCNt Propallers (11) SSCItOM. Tasting (8) CROSS Offenstes. Propellers - Testing (75480); Pro-
pellers - Performance (75479.28)
ggO- 7996 03G. AGO«Y tOtCH
AHR-3125
CiVISiC^-
Representative operating charts of propellers tested in the KACA 20-foofc pro- peller-research tunnel.
OMOINATtXO ACOttYi Rational Advisory Committee for Aeronautics, Washington, D. T3ANSLATtONi
couxiar u. s.
IAWCUAGS Eng.
U. SJOASS.
Unclass. DATE I PAGES
Sep'43[ 20 (UUS.
18 lÄTtÖS
table, graphs, drogs
Present report has been compiled from data taken from series of fairly recent tests of#full-scale propallers. Charts presented for performance s3tiraate consist of poaer coefficients plotted sgainst V/nD nith lines of constant efficiency superimposed and aro only for cohditlone considsred to be useful in present day design. In preparation of plote presented, data cere cross-faired and do not necsssarily check exactly, trith previously published data, although charts covering other conditions have been developed and are available.
NOTE: Requests for copies of this report must be addressed to: K.A.C.A., TJashinfton, P. C.
TrJ, KQ„ AO MAiHüa COMMAND 7SY. EOOCCAl UKBZX WffiGHT K3D, COCO. ISAAf '
