OP 1548 Bomb Fuze

RESTRICTED OP 1548

BOMB FUZE

DATA

5 OCTOBER 1945

This publication is RESTRICTED and shall be safeguarded in accordance

with the security provisions of U. S. Navy Regulations, 1920, Article 76

NAVY DEPARTMENT

BUREAU OF ORDNANCE

WASHINGTON, D. C.

RESTRICTED

ORDNANCE PAMPHLET 1548

BOMB FUZE DATA

/ 2 R ESTRI(

INDEX

NAVY BOMB FUZES

26,27

:TED

TAIL FUZES-Continued. Page

Bomb ‘hi1 I~‘uze Mk 2.37 and Bomb Tail lhze RIk 2%- _- 30,31

Bomb Tail Hydrostatic Fnzc~ Mk 240 ATot 0 34, :<5

ATHWARTSHIP FUZES

Bomb Atlhwart ship Hydrostla tic Fuzz hlk 224 16, 17

Bomb Athw:rrtship Hyclrost,n tic E’uzc A’lk 2:<4. 28,29

SPECIAL FUZES (Reference Only)

Bomb h’uze Al k 232 29 Ihml) Fiizt~ Alk 23.3 29 Bomb Fuzc Mk 235 31 Bomb Fllix Mli 236 31

ARMY BOMB FUZES

Page

44,45 46, 47

. 50,51 5’2 5‘3 > ’ ’ 54, 55

74,75 76, 77 7s, 79 so, x 1 82, s:z

NOSE FUZES-p(‘orlt inuctl. Page

B0rr11, Yose k31;1~~ Ii1 155 L L 1 , 104, 105 Boml) Nose Ii‘rlzes nr ; A3 :1nd All59 -- 108, 109 Bt~mb NOW FIIZW Al 1 KS, 1\1164, hl 165 b 1 12, 11 :Z Bomb NOW VI~ZC Y 1 170 114,115

TAIL FUZES

Bomb ‘l’tr il Ihzc~s AN-- A1 lOOA2, AN -- ,12lOlA2, AN-MlO2A2 _ ~__ 42,43

Boml) ‘I‘tlil b‘11zc hllO6A2 - 13omb ‘l‘tr il J~‘wx~s 311 12A I , -Al 113A-1;

48,49

IzlllihA21. -. 56,57 JSoml) ‘I‘si Fr1zc3 Rfll5, il116, R1117- _ 58, 59 13omb ‘hi1 Lor~g-Ihlay Ihzc~ R/1 123A 1,

Rl124A1, Ml25Al - ~-_ ~~ _.__ 62, 63 YhJIIl\J Tail l,0rq+lh1:1y FllZCS R11:32,

mm, M1:34__m _ 72, 7:s I3ornb ‘hi1 Jhze h114i-S - ~_---_~__ 84 Bomb Tail li’uzc:s Ml 50 ant1 hll51- - - _ 96, 97 Bomb ‘I’d Fuze A/f 152 _ - _ - - _ _ _ _ _ 98, 99 Bomb Tail Fuze M 153 _.._ _ - - - _ - - - - 100, 101 Bomb Tail hzcs AIlGO, Ml61, h!Il62- LlO, ,111

3

AMIDSHIPS FUZES Page

I3omh (Butt’erfly) Amitlsl~ips J?uzc h1129 70 hrnt) (But tIor’fby) Amidships Fuze R/l 130

(‘1’4sj_-- - .- ..-- _---_--___-- 71 I3omb (Ru ttcrfly) Amidships Fuze h 11 ;Z 1

(1‘49)_-- .- .- --~ $1

GAS-TANK FUZES

Homt) ‘hi1 F‘uzc ,\i 154. - - - - - - - - - _ ._ 102, 10s 130~11) F1.w (Ancmomoter Arming)

Ml57- __ ~_ ..--_----._ - ..__ -__ 106,107

SPECIAL FUZES (Reference Only)

13omb Fuze Ml21 Bomb I;‘uze 11122 _ _ .

Page

63

130111t3 Fuzo 1\1141_---- -- IIJoml) Fuzc M156-m -- - - -

NON-STANDARDIZED FUZES (Reference Only)

54 107

RESTRICTED

548

‘age

63

6S

79

84

107

EXPLANATORY

1lSC’. Obsolctc~ f11ms 11my lx) llSd, \vhen nlltllor- ized by the Bureau of Ordnc?ncc, for specit~l pur- posts, such as training.

61 61 Restrictions on Use

Action

This rcfcrs to the tyl)c of forcle that ciluscs the fuzc to function :1n(1 the delay with which tbc fuzc f11nctions. (No deln-~~ time is givclrl for hydrostatic* frizcs. All hytlrost~atic fuzcs fire inst an- tallcously w11cn causal to function by hydrostatic ]msslll’(‘.)

Thcst~ apply only tjo Navy usug/b of good lot’s of fuzos in the bombs for wlkh t#hc fuzcls mere ii1 tlendctl. ‘l’:i(*tic:ll limitat ions, such as minimum :tltitutlth of rc~lc~sc, :WC promulgated by t)he Chief of Naval Opcrtltions. Restrictions on the use of tlefcctjvc lots of fllzes arc promulgated in Orclnunce Circular TAters and 01’ 1515. SW page 8 for special prchc3utions in the use of certain fuzcs.

Modifications Fuzcs for whiclI no restrictions are listed are

safe for all take-offs and landings anywhere, including (21t~apiilt tnkc-offs and arrc3tcd hirldings.

Air Travel to Arm

Status .

This iildi(+:lt (1s :1\7:1il:lbility. Tcbrms used and their mcnnings iirt~:

Service--‘IYlch fuzc is iindcr currcn t procurcmen t or suitable for procurcmcnt if requircmcnts csist.

This gives an avcragc’ figure (unless otherwise noted) for 1 be air tr:Lv4, along the trnjcct ory of t,hc bomb, rcyuirt~l to ttrm t)hch fuzz when installed in bornl~s for which it, is tlcsigncd. The figure givcbii is not to be confused with thcl minimum s:lf(i altitud(l of r~~lci~s~~, which clopciitls on ot,hcr f~lctol~s.

t)

Obsolescent - -Thcl fuze is becoming obsolete or is being sup~s~d~d 1)~ anot her design. It is not in product,ion and not suitrthle for future pro- clll’elll~‘ll t .

Indications of Arming

Obsolete -Fuzos are listed as obsolete only when so tlcc~larctl by the Rurwu of Ordn:~ncc and so st:Lt,ed in 01’ 1515, c~hapter 4. Fuzcs may be decla,rctl obsolete for 1 he following IYXSOIIS : (1) Present stock is almost exhausted and will not be rcplcnislicd. (2) I’i*clscbnt stocak is in ~sccss of Bureau of Ortl~~:~ncc~ rccluiremcbllts. (3) The fuzz, bccuuse of s:lfclty i~~flsoi~s, is linsuituhlc for Navy

This term rcfcrs to the visual evidence of normal arming or parti: arming of undamaged fuzcls.

Bombs in Which Used

This list inoludcls the bombs for which the fuze was designed and the bombs in which it could be or has been used to give tactical results. ‘3 L ee Restrictions on Use.

KTED RESTRICTED 5

+ 400 W w LL

; 300 -J ii!

VERTICAL FALL REQUIRED

TO ARM BOMB FUZES

DIVE ANGLE = 0” HORIZONTAL RELEASE

0 500 1000

AIR TRAVEL, FEET

Figure 7

DIVE ANGLE = 15” DIVE hNGLE=45’

500

*

+ 400

w” LL

- i 300

2

c” 200 0 I= (r W >

100’

0 0 500 IO00

All? TRAVEL, FEET

Figure 2

; 1500

LL

-Y I 1

d

\Gp

zoo

%0°

tPQ

li 1000

2 cl -

;; 500 >

l- rw

DIVE ANGLE = 30°

7nnn

0 500 1000 I500 2000

AIR TRAVEL, FEET

Figure 3

tiiiiiiiii 500 1000 1500

AIR TRAVEL, FEET

Figure 4

6 RESTRICTED RESTRIC

DIVE ANGLE = 60°

0 50-o IO00 1500 2000

AIR TRAVEL, FEET

Figure 5

Notes-- Tlrese charts provide a convenient means of determining the vertical fall in feet requiretl to arm the various types of fuzes n-hen the bomb is released in any combination of dive angle and speed. The “air travel” for

entering the cluxts is t,he act,ual distance traveled by t!he bomb along t’he trajectory. Vtllues of air travel are h 4ven in t)he ticwript,ion of each fuze. Vertical fall required to arm is tlcfinetl as tllc vorticd distlancc bc~twcen the point, of wlcase of tho bomb and tlic point wh(brc tllcl fuzc~ bccomw fully asrnctl.

Procedure -JVith air travel for a given fuze enter t)he chart for the appropriate dive angle. Project air travel vertNically lo the curve corresponding t0

spcwl of aircwd t and from thcrc horizontally to ititorw(~f the vertical fall scalp. This intclrwction givchs the vertical full wquiwtl to arm the fuze.

Example :

Given: ,lir trawl - - 1,100 feet

Dive angle-~ _ _. - 30 dPgr~‘cs

True air speed - - 200 Ii110 t s

Ij’rom 30’ chwt: J’crticul fall _ G50 ftbcht .

VERTICAL FALL REQUIRED TO ARM BOMB FUSES

7

VERTICAL FALL REQUIRED TO ARM BOMB FUSES

DIVE ANGLE = 60”

500 1000 1500

AIR TRAVEL, FEET

Figure 5

Notes--Thme charts provide a convenient means of determining the vertical fall in feet required to arm the various types of fuzes when the bomb is released in any combination of dive angle and speed. The “air travel” for entering the charts is the actual distance traveletl by the bomb along the trajectory. Values of air travel are given in the description of each fuze. Vertical fall required to arm is defined as the vertical distance between t’he point of release of the bomb and the point where the fuzc becomes fully armed.

Procedure- -With air travel for a, given fuze cnt,er t,he chart for the appropriate dive angle. Project air travel vertically to the curve corresponding to

speed of aircraft and from there horizontally to intersect the vertical fall scale. This intcrsectiorr gives the vertical fall rcquirecl to arm the fuze.

Example :

Given: Air t’ravel- - _ - - _ - 1,100 feet Dive angle _-..--- _~~ -.- ~~. 30 dcgrccs

Trueairspeed---- ~. ~~ -~ _. 200 knots From 30” chart: Vertical fall- - - 650 fecbt

Tn dives over GO degrees, vertical fall may be consitlcwd as equal to uir- arming travel.

RESTRICTED 7

BOMB FUZE DATA OP 1548

SPECIAL PRECAUTIONS

Bomb Nose Fuzes AN-Ml 04, AN-MI 2OAI, Ml 70

To iusure maximum safety, the following pre- cautious should be tInken when using clusCers of bombs containing t’hese fuzcs:

I. Insure by repeated instruction that ALL mcu hnr~tllit~g clust~c~rs con taming bombs with these fuzcs undcrst and the construction and operation of the cluster and fuzes. Keep the number of men to a, minimum.

2. Inform local Bomb Disposal Officer of the use of these clusters and have him stand by or be avaSilablc upou call to assembly, handling, ant1 loading areas.

3. Only Bomb Disposal Personnel, or other pcrsonnc1 similarly qlralified, are to handle armed fuzcs.

4. Insure that> pilots and crews arc informed of the possibility of a bomb’s detonating following both land and water crashes. (The arming wire may be accitlcn tally removed by impact, arming the fuze.)

5. Assemble fuzes to clustered bombs prior to hoist,ing imo aircraft’. (Because more care can bc tlakcn under more favorable conditions of ligllt, wcatlrcr, and accessibility.)

G. Fuzc clusters only as needed. ‘7. After the cluster is positively fastened to

tllie rack or shackle, the fuzc arming wires should be checked and t,hen t,he fuze safctp cotter pins removed.

8. Do not mix loads of para-frngs with other bombs.

9. Carry clusters only in TBI? or ot,hcr bomb- bay type aircraft of maximum safet)y.

10. These clust,ers may be used safely only with continuous maximum cart.

Bomb Nose Fuzes AN-MI 1 OAl and AN-Ml 26Al

‘l’hc following precautions should bc taken when usiug bornbs or clusters of bombs containing these fuzc5.

I. Insure that’ all people handling bombs, or clusters of bombs, containing these fuzcs arc aware that a blow crushing one of tlhese fuzes may cause the fuze to fire, det’ona tiug the bomb. This could result from dropping a cluster of bombs five to ten feet onto a hard surface. Appropriate care must, therefore, be exercised.

2. It is recommended that clusters or bombs containing these fuzes not bc carried on external racks in landings of carrier-busctl aircraft,, since on arrested landings an accidcntjally released cluster or bomb might dctonat,c as a result of crushing, even though the fuzes were unarmed.

RESTRICTED RE!

P 1548

Part 1

cly only

mbs, or zcs tlrc SC fuzes e bomb.

f bombs ropri at c

m bombs cxtc1ml1

ft, since released besult, of rmetl.

‘RICTED

NAVY

BOMB FUZES

NOTE

No Navy Bomb Fuzes have been issued for service use with the designations listed below:

Mk 200-218 inclusive

Mk 220

Mk 222

Mk 225

Mk 226

Mk 241

Mk 242

BOMB FUZE DATA .

OP 1548

10 RESTRICTED

/_ 4-8”.

CID

UNARMED ARMED

I 1.6”-

Figure 6.-Outline Drawing of Nose Fuze AN-M& 279

GREATEmR THAN &

Weight and Packing

Weight of Fuze Fully Loaded -- -Lipprosin~ntely 4. I 1 b. Weight of Booster -0.9 oz. tetryl. Standard Packing--Six fuzes, each in a metal container, are packed in a metal crafe measuring 15.5 in. Y 10.7 in. s 6.3 in. and weighing about 36 lb. gross.

= 1548 BOMB NOSE FUZE AN-Mk 219

h

FOR 3 I

Characteristics

Action--1nstantantaous upon impact Modifications--Nods 0, 1, 2, 3, and 4 differ only in the identit,y of tJhc manufactnrcr. Status---Serviw Restriction on IJse- ----Noncb Air Travel to Arm- -Approximately 1000 ft. Indication of Arming--If the striker flange has separated from the outer slccvc by more than yi6 in., the fuze should 1x3 considered armed.

Bombs in Which Used

loo-lb. Chemical Bomb Mk 42 100~lb. G. I’. Bomb Mk 4 and Mods 500-11~. G . I’. Bomb Mk 12 and Mods* lOOO-lb. Cr. P. Bomb Mk 13 and Mods* WO-lb. Demo. Bomb Rlk 9” 1 000-lb. Dcrno. Bomb Mk 9 * 325-350-11,. depth bomb--All* ,Vrmy G. P. bomb--All service types** LZN-Standard G. P. bombs-All**

*\ITith adaplchr rmg and an additional Auxiliary Booster JIk I.

**\Yith adapter ring and an Auxiliary Booster Mk 4.

RESTRICTED

Figure 7.-Nose Fuze AN-Mk 219


C-1 g"----' .

UNARMED ARMED

GREATER 3”

THAN E

12

Figure 8.-Outline Druwing of Nose Fuze Mk 227

Weight and Packing

Weight of Fuze Fully Loaded-Approximately 7.6 lb. Weight of Booster-l.4 oz. tetryl Standard Packing-One fuze is packed in a single container with one Tail Fuze Ml< 223. Two containers are packed in a metal crate rneafsuring 27.1 in. x 12.3 in. s 6.3 in. ancl weighing about 65 lb. gross.

RESTRICTED

)P 1548 BOMB NOSE FUZE Mk 221

Characteristics

Action--Impac+, 0.01.-sec. delay.

Modifications- -1lods 0, I, 3, and 4 differ only in t)he identity of’ the manufacturer. Mod 1 A. S. is nlodificd for nrltisublllarine USC.

Status---Ohol(~t (b.

Restriction on ‘C’se-Training purposes only.

Air Travel to Arm--,ipproximately 850 to 1100 ft.

Indication of Arming-- If the protecting cap flange

has separated from the horizontal index line on the outer sleeve by more than $is in., the fuze should be considered armed.

Bombs in Which Used

500~lb. G. P. Bomb Ml< 12 and 500-lb. Demo. Bomb Mk 9 lOOO-lb. G. P. Bomb Ml< 13 and lOOO-lb. Demo. Bomb Llk 9 lOOO-lb. G. P. Bomb Ml< 36

figure 9.-Nose Fuze Mk 227

RESTRICTED


ARMED

Chart

Actiol Modi the ic is In0

Statu

Restr

Air TI

Indicr the fl

ARMED

Figure 7Q.-Outline Drawing of Tail Fuze MI< 223

Weight and Packing

Weight of Fuze Fully Loaded- AppmCmatc’ y IO.5 1 b. Weight of Booster- 1.4 oz. tetryl Standard Packing-One fuze is packed in a single container with one Nose Fuze I-a 221. Two containers are packed in a metal crate measuring 27.1 in. x 12.3 in. x 6.3 in. and weighing about 65 lb. gross.

14 RESTRICTED RESTF

BOMB TAIL FUZE Mk 223

I Characteristics

I 1

Action-Impact, inertia firing, 0.01~sec. delay. ModificaGm+-Mods 0 , 1,3, and 4 d%Te~ only in the identity of the manufacturer. Mod 1 ,!L S. is modified for antisubmarine use.

Status-Obsolete.

the state of arming. If the upper surface of the striker has separated from tlhe outer sleeve by more than 3:s in ., the fuze should be considered arnle&.

Bombs in Which Used

500~lb. Cr. P. Bomb Mk 12 and Mods SOO-lb. Demo. Bomb Mk 9 1000-lb. G. P. Bomb Mk 13 and I\1ods 1000-h. Demo. Bomb Mk 9 1000~Jb. G. P. Bomb Mk 36

Restriction on Use-Training purposes only

Air Travel to Arm--Approximately 850 to 1100 ft.

Indications of Arming--The window in the side of the f uze permits visual examination t’o dct ermine

RESTRICTED

Figure 7 7 .--Tail Fuze Mk 223

5 15

16

BOMB FUZE DATA

1cr

OP 1548

Figure 7 I.-Outline D rawing of Athwartship Hydrostatic Fuze Mk 224

Weight and Packing

Weight of Fuze Fully Loaded--Approximately 12.0 lb. Weight of Booster--O.5 oz. tetryl, and 8.9 oz. TNT Standard Packing--Four metal containers, each containing one complete fuze (irwluding booster and booster extender) with bolts and gaskets, are packed in a nletal crate measuring 17.2 in. x 7.S in. s 7.8 in. anti weighing about 56.5

lb. gross

” RESTRICTED F

I F

OP 1548 BOMB ATHWARTSHIP HYDROSTATIC FUZE Mk 224

Characteristics

Action--Hydrostatic: arming and firing. Modifications - Mods 0, 1, and 2 differ only in the identity of t8hc IllfLnllfa(‘tlil’f~1’. Status-~-O~)solc~tc~. Restriction on Use--Not to hc used by Naval activities. Air Travel to Arm-None rcquirtv~.

Indications of Arming-Thrl fuzc is partially armed when the jump-out pin is missing. Hydrostatic pressure is needed to c*ornpleto alming.

Bombs in Which Used

All depth bombs with athwartship fuze povkct~. (Requirc3 iisc of a spacm wh-hcln us;chd in &XL

and 7OO-lb. depth bombs.)

I--- BOOSTER EXfH4DER BOOSTER r PISTOL

RESTRICTED 67O!iS’i-- 45 -2

Figure 13.-Athwartship Hydrostatic Fuze Mk 224

17

BOMB FUZE DATA

.

-

OP 154

I

Figure 74.-Outline Drawing of Nose Fuze Mk 227

18

Weight and Packing

Weight of Fuze Fully Loaded---Approximately 0.7 lb. Weight of Booster-O.1 oz. tetryl. Standard Packing---Four metal containers, each containing 24 fuzes, a,re packed in a metal crate measuring 17.3 in. x 13.0 in. x 12.9 in. and weighing about 102 lb. gross.

RESTRICTEC

c- -_____

OP 1548

RESTRICTED RESTRICTED

BOMB NOSE FUZE Mk 227

Characteristics

Action--instantaneous upon impact. Modifications- -None.

near sea level; 3000 ft’. at an altitude of 20,000 ft.

Indication of Arming---No external indication of arming.

Status -Obsolete. Restriction on Use--None. Air Travel to Arm -LIppt~osirnately 1500 ft’. when

Bomb in Which Used

S-lb. ,Intiaircraft Bomb Ml< 34.

Figure 75.-Nose Fuze Mk 227

20


ARMED n

I I

L-l I .9”

Figure 76.-O tl D u ine rowing of Tail Fuze AN-Mk 228

Weight and Packing

Weight of Fuze Fully Loaded--Approximately 10.5 lh. Weight of Booster-l.4 oz. tctryl Standard Packing--Few fums, each in a metal container, arc puked in a metal crate 17.1 in. x 11.6 in. s 11.6 in. and weighing about 60 11). gross.

RESTRICTE

- r-

OP 1548 BOMB TAIL FUZE AN-Mk 228

Characteristics the fuze provides visual examination for arming.

Action-Impact, inertia firing, 0.0%sec. delay. If the upper surface of the striker has separated

Modifications--NIocts 0 and 1 differ only in the from the outer sleeve by more t’han $(/6 in., the

identity of the manufacturer. fuze should be considered armed.

. Status-Service. Restriction on Use- -None.

Bombs in Which Used

Air Travel to Arm --Approximatlely 1) 100 ft. Indication of Arming---Thth wintlow in the side of

1000-lb. ,4. I’. Bomb AN-Mk 33. 1600~lb. A. I’. Bombs Mk 1 and AiN-Allc 1.

RESTRICTED

Figure 77.--Tail Fuze AN-Mk 228


12.4

Figure 78.-Oufline D rawing of Tail Hydrostatic Fuze Mk 229

Weight and Packing

Weight of Fuze Fully Loaded-Approxinmtely 14.5 lb. Weight of Booster--l.6 OZ. tctryl. Standard Packing-m-Four fuzes, each in 1~ metal contuiner, are pwked. in a me1 al crate measurin g 17.5 in. x 11.6 in. s 11.6 in. and weighing nhout 75 lb. grOS.

22 RESTRICTED RI

BOMB TAIL HYDROSTATIC FUZE Mk 229

Characteristics

Action-Hydrohatic: arming and firing, adjustable to firing depths of 25, 50, 75, 100, and 125 ft.

Modifications-Mods 0, 1, and 2 differ only in the identity of the manufacturer.

Status- -0bsoletc.

Restriction on Use-Not1 to be used by Naval activities.

Air Travel to Arm--Appl,o?iimatcly 400 to 500 ft.

Indication of Arming-No external evidence of arming.

Bombs in Which Used

650- and 700-lb. depth bombs-All 500-lb. Demo. Bomb Mk 9 1000~lb. Demo. Bomb Mk 9 500~lb. G. P. Bomb Mlr 12 and Mods 10004b. G. P. Bomb Mk 13 and Mods 1000-11,. G. P. Bomb Mk 36

RESTRICTED

Figure 79.-Tail Hydrostatic fuze Mk 229

23


24

12.7”

I

figure IO.--0utline D rawing of Tail Hydrosfatic fuze AN-Mk 230

Character

Action-t to firing (3 Modificati llotls 0, incorpora. 6 have a4 sized: MO emphasize Status- --I

,1 Restrictio lo be llse~

Weight and Packing

Weight of Fuze Fully Loaded-Approximately 14.5 lb. Weight of Booster-O.9 oz. tetryl. Standard Packing-Four fuzes, each in a metal container, arc packed in a mct~al crate measuring 16.5 in. x 11.6 in. x 11.6 in. and weighing about 75 lb. gross.

RESTRICTED RESTRIC’

BOMB TAIL HYDROSTATIC FUZE AN-Mk’n3o

Characteristics

Action-1 Iydrost atic‘ arllling and firing, adjustable to firing depths of 25, 50, 75, 100, and 125 ft. Modifications - Mods 1, 3, 4, 5, and 6. 11~1s 0, 1, and 3 are similar; 1lods 4, 5, and 6

incorporate added safety features. Mods 5 and 6 have accuracy of 25-ft. clept’h setting empha- sized: Mod 4 has accuracy of 50-ft. depth setting eruphnsized. Status --IClods 0, 1, and 3--Obsolete.

1lods 4, 5, and (~--Service. Restrictions on Use--Pllods 0, 1, mtl 3 are not to be used front Naval aircraft, Xo restrictions

on use of Mods 4, 5, and 6; but use of Mods 5 and 6 is preferred because of more accurate 25-ft. depth setting. Air Travel to Arm--,ipprosimately 300 to 400 ft. Indication of Arming--No external indication of arming.

Bombs in Which Used

325-lb. Depth Bomb Ml\: 53 and Mods. 350-lb. Depth Bomb Mk 54 and Mods. 500-lb. G. P. Bomb SN-M64 and Mods. 1000-lb. G. P. Bomb AN-M65 and Mods. 2OWlb. G. P. Bomb 21N-,1166 and Mods.

RESTRICTED

Figure 27.-Tail Hydrostatic Fuze AN-M& 230

25


Figure 22.-Outline Drawing of Tail Hydrogatic Fuze Mk 231 Mod 0

Weight and Packing

Weight of Fuze Fully Loaded-ApprosimaIcly 6.5 lb. Weight of Booster-O.8 oz. tetryl (Includes relay pellets.) Standard Packing-Six fuzes, each in a metal container, are packed in a mc~tal

crate measuring 9.2 in. s 13.7 in. s 13.8 in. and weighing about 5:‘, lb. gross.

26 RESTRICTED

lop 1548

TRICTED

BOMB TAIL HYDROSTATIC FUZE Mk 231 Mod o

Characteristics Indication of Arming-n’0 external indication of

Action--Hydrostatic arnling and firing; fixed depth arniing.

setting at 25 ft. Modifications--None. Bombs in Which Used S tatus-Scrviw . Restrictions on Use-None. .\ir Travel to Arm-Approximately 300 to 400 ft.

325-lb. Depth Bolnb Ail\: 53 and Mods. 350-lb. Depth Bomb Mk 54 and Mods. 500-lb. Cf. Y. Bon~b ,IN-L164 and Mods.

RESTRICTED

Figure 23.--Tail Hydrostatic Fuze Mk 231 Mod 0

Weight and Packing Weight of Fuze Fully Loaded-Approximately 12.0 lb. Weight of Booster-O.5 oz. tetryl and. 8.9 oz. TNT. Standard Packing-Four metal containers, each containing one complete fuze (including booster and booster extender) with bolts aad gaskets, are packed in a metal crate measuring 17.2 in. x 7.8 in. s 7.8 in. and weighing about 60 lb. gross.

RESTRICTED

OP 1548

ESTRICTED

BOMB ATHWARTSHIP HYDROSTATIC FUZE Mk 234

Bomb Fuzes Mk 232 and Mk 233-These special fuzcs arc (lescribcd in 01’ 994. The f uzw and in formation concerning them nrny hc obtaiwd by special rcqucst to t)hc 13urchau of Ordnance.

Characteristics Action---H-ydlaost ti tic atming and firing, adjustable to firing depths of 25, 50, 75, 100, and 125 ft. Modifications- -11 ods 0, 1, 2, and t?. Mods 0, 1,

and 2 differ only in the identity of the manufacturer. Mod 3 has only one detonator slider. Status-Obsolete. Restriction on Use---Not to be used by Naval activities. Air Travel to Arm-None required. Indication of Arming-The fuze is partially armed whcan the jump-out pin is missing. Hydrostatic pressure is needed to complctc arming.

Bombs in Which Used All depth bombs with transverw fuzo pockets. (Itequires use of a spacer witZh 65O- and 700-lb.

depth bombs.)

Figure 25.-Athwurtship Hydrostatic Fuze Mk 234

RESTRICTED 29


MK MK

10.6” n-&J- I- 14.6”

UNARMED

1 ARMED

Figure 26.-O u tl ine Druwing of Tail Fuzes Mk 237 Mod 0 and Mk 238 Mod 0

Weight and Packing Weights of Fuzes Fully Loaded--All< 237 approximately 4.3 lb.

111~ 238 approximately 4.5 lb. Standard Packing--Ten fuzes (without vanes), each in a metal container, and two containers, each holding vane assemblies, are packed in a metal crat)e whose weight and dimensions are:

Fllze

Mk 237 hlk 238

Crate size

20.7 in. s 6.7 in. x 14.4 in. 20.7 in. s 6.7 in. s 18.4 in.

Weight (gross)

64 lb. 71 lb.

30 RESTRICTED

OP 1548

?ESTRlCTED

Bomb Fuzes Mk 235 and Mk 236-These special fuzes are described in OP 690. The fuzes and information concerning them may be obtained by special request t)o the Bureau of Ordnance.

BOMB TAIL FUZES Mk 237 and Mk 238

Characteristics Ahon--Lead shear wire, long delay, 2-, lo-, ant1 30-hr. Modifications---Mods 0 and 1 differ only in arming mechanism details. Status-Service.

Restriction on Use--None. Mininlum release altitude is same as for instantaneous fuzes. Air Travel to Arm-Approximately 400 to 500 ft. Indication of Arming-If tlhe distance between the eyelet on the gear mechanism and the flange on the stem cup is greater t,han 3’s in., the fuze should be con sidered armed.

Bombs in Which Used Mk 237-500 lb. G. P. Bomb AN-M64Al* Mk 238-1OWlb. Cr. P. Bomb AN-M65Al*

2000-lb. G. P. Bomb AN-M66Al*

*Bombs without the Al modification may be used if the Al Mods are not available.

RESTRICTED

Figure 27.--Tail Fuze Mk 237 Mod 0


i 3.5”

,r ir

5.0

I

- 1 . g"-

I ARMED


Weight and Packing Weight of Fuze Fully Loaded-Approximately 7.6 lb. Weight of Booster-l.4 oz. tetryl. Standard Packing--One fuze is packed in a single container with one Tail Fllze Mk 223. Two containers are packed in a metal crate Inensuring 27.1 in. s 12.3 in. s 6.3 in. and weighing about 65 lb. gross.

32 RESTRICTED

OP 1548

fR 3" z


Characteristics Action---Impact,, O.Ol-sec. delay. (Similar to Fuze Mk 221 except that booster has been cut down to fit Army G. P. bombs.) Modifications-None Status--Obsolescent Restriction on Use-None

has separated from the index line on the outer sleeve by more than ?{G in., the fuze should be considered armed.

Bombs in Which Used

Air Travel to Arm--Approximately 850 to 1100 ft. All AN-M G. P. bombs and Navy G. P. bombs

,escept’ the Navy loo-lb. G. P. Bomb Mk 4 and Indication of Arming-If the protecting cap flange LZods

RESTRICTED Fi'0587-45---3

Figure 29.~Nose Fuze Mk 239


14.4"

figure 30.-O tl’ D u me rawing of Tail Hydrostatic FuzdMk 240 Mod 0

Weight and Packing Weight of Fuze Fully Loaded-6.6 lb. Weight of Booster-O.8 oz. tetryl (Includes relay pellets.) Standard Packing-Six fuzes, each in a metal container, arc packed in a metal crate measuring 9.2 in. x 13.7 in. x 17.8 in. and weighing about 58 lb. gross.

34 RESTRICTED

OP 1548

STRICTED

BOMB TAIL HYDROSTATIC FUZE Mk 240 Mod 0

Characteristics Action-Hydrostatic arming and firing. (Similar to Puze -Mk 231, except for length of arming stem.) Modifications --None. Status-Service. Restriction on Use-None. Air Travel to Arm--Approximately 300 to 400 ft.

Indication of Arming-No external indication of arming.

Bombs in Which Used IOOO-lb. G. P. Bomb AN-M65 and Mods 2000-lb. G. P. Bomb AN-M66 and Mods

Figure 31.-Tail Hydrostatic Fuze Mk 240 Mod 0


I- I

5.0”

L

+- I .6”---


Weight and Packing Weight of Fuze Fully Loaded-Approximat~cly 4.4 lb. Weight of Booster-l.9 oz. tetryl. Standard Packing---Fifteen flues, each in a metal contuincr, arc’ packed in a wooden crate measuring 26.5 in. x 15.5 in. s 11.0 in. and weighing about 98 lb. gross.

36 RESTRICTED

DP 1548

RESTRICTED


Bomb Fuzes Mk 241 and Mk 242.-These fuzes have not’ been produced as of 1 June 194%.

Characteristics Action--1mpc:t (water (liscr,imiutifing), 0.025SW’. ddfi~. Modifications --None.

Status-Service. Restriction on Use--None. (Note--Designed to be used in conjunction with AN-MlOOA2 series tail fuzes witIh O.24-sec. delay primer detonator.) Air Travel to Arm-Approximately 450 ft. Indication of Arming --lf the vane cup is missing, the fuze is armed.

Bombs in Which Used ,111 AX-11 G. P. bombs and Navy G. P. bombs

cvccept Xavy loo-lb. Q. I’. Bomb Ml< 4 and Mods

RESTRICTED

Figure 33.~-Nose Fuze Mk 243


I- 1.6”-

Figure 34.-Nose Fuze Mk 244

Weight and Packing Weight of Fuze Fully Loaded--,~pE”.oSilIla tdy 4 .A lb. Weight of Booster-l.9 oz. ttttr’yl. Standard Packing-Fifteen fuztls, tlach in a metal co:~tainer, art: packed in a wooden crate measuring 26.3 in. s 15.5 in. s 11.0 in. and wc4ghing about 98

lb. gross.

38 RESTRICTED

,P 1548

RICTED

Characteristics Action-Impact, four-sec. delay (Similar to Fuze Mk 243 except for differences noted below.) Modifications-Fuse Mk 244 Mod 0 is the same as Fuze Mk 243 except) for the delay element. Fuze Mk 244 Mod 1 differs from Fuze Mk 244

Mod 0 in that it has an added striker head and reduced shear threads. hze Mk 244 Mod 1 will function on ground impacts from altitudes of 1000

ft. and over.


Status-Service.

Restriction on Use-None.

Air Travel to Arm-Approximately 450 ft.

Indication of Arming-If the vane cup is missing, the fuze is armed.

Bombs in Which Used

All AN-M G. P. Bombs and Navy G. P. bombs except Navy loo-lb. G. P. Bomb Mk 4 and Mods

RESTRICTED

Figure X-Nose Fuze Mk 244

Part 2

ARMY

BOMB FUZES

NOTE

The obsolete, prewar fuzes listed below are not de-

scribed in this pamphlet. These fuzes are not to be

used by Naval activities.

. . Ml05

Ml07

Ml 09

The designation Ml41 has not been assigned to a ----.I-- c--w, service cub.

RESTRICTED


AN-M 16OA2-6.6” U AN-M lOlA2-9.6” AN-M 102A2-13.6”

PRIMER DETONATOR ’ M 14

Figure [36.-O u ine Drawing of Tail Fuzes AN-MlOOA!?, AN-M107A2, and tl

AN-MIOlA2

Char Actia Prim 0.026

l Mod se% ctPlaJ the f

sorief prim blade qrm

Statu

Rest]

Air ‘I M *4r

Indic PYCIC thtJ \ be cc

Boml

Weight and Packing Weights of Fuzes Fully Loaded-

AN-MlOoAa--_ -_ .__ ._ AN-MlOlAa-. ~~_ ~~ _~ - AN-M102A2m-- -~._---~~- ~-~- -::-m-- ____

Standard Packing-Twenty-five fuzes, each in a metal in a wooden crate whose weight and dimensions are:

E'uze AN-MlooA2 AN-R21olAa AN-R2102A2

Grate size 24.3 in. x 14.8 in. x 15.1 in. 27.3 in. x 14.8 in. x 15.1 in. 31.3 in. x 14.8 in. s 15.1 in.

~--__ 2.7 lb. __- 2.9 lb. ___ 3.2 lb.

container, are packed

Weight (gross)

116 lb. 129 lb. 145 lb.

M

and 1

RESTRICTED RESl 42

t

OP 1548 BOMB TAIL FUZES AN-M ooA2, AN-Ml 01 A2, AN-MI 02A2

Characteristics Action-Impact, inertia-firing, interchangeable ?‘rimcr Detonator Ml4 with non-delay, o.Ol-,

0.0%, O.lO-, or 0.24-see. dolay

Modifications-M 100 and M 1 OOAl series. 34 100

scbrics has an eight-bladed vane and a O.l-sec. tlclay primer detonator permanently assembled to the fuzc. ,4N-h/l1 OOAl series is similar to M 100

‘;(‘I’lCS L , except, t,h:zt it has an interchangeable prirncr detonator. AN-M lOOA series has a four- Maded vane and requires a shorter air travel to arm than clithor M1OO or AN-MlOOAl series.

Status-M 100 series-Obsolete-Being replaced by AN-Ml OOA2 series AN-MlOOAl series-Obsolete-Being replaced by AN-M 1 OOA2 series. AN-M 1 OOA2 series--Service

Restriction on Use--None

Air Travel to Arm-((Approximate) Ml00 and AN-MlOOAl series-2000 ft. AN-Ml 00A2 series-445 ft.

Indication of Arming-If-the distance between the clyclct on the gear mechanism and the flange on

tlw vane cup is more than $ in., the fuze should l)e considered armed.

Bombs in Which Used

Mloo, AN-Mloo, iIn(l AN-M 1 OOA2

l(K)-lb. G. P. Bomb Ah’- M30 and Mods 250-lb. G. P. Bomb AN- M57 and Mods 220-lb. Frag. Bomb M88 260-lb. Frag. Bomb AN- M81

k!lOl,AN-hflOlA1, 500-lb. G. P. Bomb AN- und AN--MlOlA2 MU and Mods

500-lb. G. P. Bomb AN- M64 and Mods 500-lb. S. A. P. Bomb AN-M58 and Mods 500-lb. Incendiary Bomb AN-M76 500-lb. Chemical Bomb AN-h178

RESTRICTED

M102, AN-MlOZAl, and AN-M 102A2

1 OOO-lb. G. P. Bomb AN- M44 and Mods 1000-lb. G. P. Bomb AN- M65 and Mods 1000-lb. S. A. P. Bomb AN-M59 and Mods I 000-lb. Chemical Bomb AN -M79 2000-11:. G. P. Bomb AN- M-34 2000-lb. G. P. Bomb AN- M66 and Mods ~OOO-lb. L. C. Bomb AN- h’f56 and hfods

Figure 37.--Tail Fuzes AN-M 1 OOAI,

AN-M107A2, AN-M702A2

43

BOMB FUZE DATA OP 15481 I-

t \

t

/

+ E.6” -

Figure 38.-O fl u ine Drawing of Nose Fuze AN-MI 03AI

Charac

Action-

Modific lcrs fro1 air traT Fuze A featllre~

Status-

Restricl to be 1 on use (

Air Tra MIN

VANE USED WITH FLAT-NOSE DEPTH BOMB

Weight and Packing Weight of Fuze Fully Loaded-Approximately 3.7 lb. Weight of Booster-l.9 oz. tctryl. Standard Packing-Twenty-five fuzcs each in a metal container, are packed In a wooden crate measuring 22.3 in. s 17.3 in. s 9.2 in. and weighing 132 lb. gross.

44 RESTRICTED RESTRI

OP 154E

‘H BOMB

ESTRICTEI

BOMB NOSE FUZE AN-Mlo3Al

haracteristics

ction-Impact, instantaneous, or 0.1~sec. delay.

!odifications-M 103 and ,1N-M 103. h4 103 dif- IS from the ,1N-M 103 in that it requires a longcl 1’ trnvcl to arm. Fuze A N-M 103 differs from w’ ,1N-Ml03Al in having inadequate safe@ ;Itwos.

tatus--?rf103 and AN-MlO3-Obsolctcl. AN-XI103~~1-Service.

estrictions on Use--Ml03 and AN-M103-Not 1 be used by Naval activities. No restriction I use of AN-MlO3Al.

ir Travel to Arm-- -(Approximate). 11103 1140 ft. for delay.

1710 ft. for instantaneous.

AS-31103, ,dN-bCZlO3Al 510 ft. for delay. 765 ft. for instan-

taneous. Indication of Arming--If the arming disc&s aw missing, the fuze is armed.

Bombs in Which Used . lOOO-lb. ,iircraft &line AN-MI\; 13 Mod 1. Wlb. Frag. Bomb M82. All bombs* 100 lb. and over that receive a nose

fuze exwpt the’ Chemical Bomb AN-M47A2, Chemkal Ronll) &170, and Navy loo-lb. G. Y. Bomb Mk 4 and hLlods.

*Otis auxiliarv booster is reqlkhd whe11 used in Navy bombs. ~Iust use special vane assembly when used with flat-nosed depth bombs. Special 4-in. diameter vane, rcquirtxd for use in the go-lb. F’rag. 13omb 11182, is supplied \vit h fi II asselnblies of boml)s.

RESTRICTED

Figure B.--Nose Fuze AN-M 1 O3A 7

45


4.4”

0 I - J

DELAYED AIMING PLUG IS OPPOSITE SIDE OF FUZE I LINE WITH THIS PLUG

Figure 40.-O tl D u ine rawing of Nose Fuze AN-M7 04

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.2 lb. Weight of Booster-O.7 oz. tetryl. Standard Packing--Fifty fuzes, each in a metal container, are packed in a wooden crate measuring 17.2 in. x 16.3 in. x 11.4 in. and weighing 98 lb. gross.

Char, Actio

Modi precil

Statu

Restr cautic

ON

N

46 RESTRICTED REST

OP 1548

BUG IS ON

FUZE IN UG

a ss.

RESTRICTED

BOMB NOSE FUZE AN-Ml04

Characteristics Air Travel to Arm-None required. Arms 2.5

Action--Instantaneous upon impact.

Modifications-M 104 and AN-M 104. No ap- preciable difference.

sec. after arming pin jumps out. Indication of Arming-Delayed arming plug missing.

Status-Obsolete-Replaced by AN-M12OAl. Bombs in Which Used Restriction on Use-See page 8 for special pre- xhions.

X&lb. Para-Frag. Bomb AN-M140 and Mods %-lb. Para-Frag. Bomb AN-M72 and Mods

Figure 41 .-Nose Fuze AN-M IO4

RESTRICTED


Figure 42.-Outline Drawing of Tail Fuze M 7 06

Weight and Packing Weight of Fully Loaded Fuze-Approximately 2.4 lb. Standard Packing-Fifty fuzes, each in a metal container, are packed in a wooden crate measuring 24.4 in. s 10.7 in. s 11.4 in. and weighing 157 lb. gross.

48 RESTRICTED RE

OP 1548 BOMB TAIL FUZE M106A2

Characteristics

Action-Impact, delay Modifications-M106, MlOGAl, and M106A2

differ only in delay times as shown below. Ml06 4-5 sec.-delay M106Al 8-11 sec.-delay M106A2 4-5 sec.-delay

Status-Obsolete-Replaced by Ml 12 and Ml 15 series fuzes.

Restriction on Use-Not to be used by Naval activities.

Air Travel to Arm-None required.

Indication of Arming-Safety pin missing.

Bombs in Which Used

*411 *4rmy and Army-Navy Standard G. P., S. 9. P., and ,4. P. Bombs

RESTRICTED

Figure 43.-Tail Fu ‘ze Ml06

SAFETY BLOCK

Figure 44.-Outline Druwing of Nose Fuze M708

Weight and Packing Weight of Fully Loaded Fuze-,4pprosinlatlely 0.5 lb. Standard Packing-Two hundred fuzes, each in a metal container, are packed in a wooden crate measuring 17.8 in. s lG.2 in. x 8.2 in. and weighing 131 lb. gross.

50 RESTRICTED

Charac Action Modifi have a head aI Status- Restric wctiviti

RESTRll

OP 1548 BOMB NOSE FUZE Ml08

Characteristics

Action--Instant meow upon impact.

Modifications ---Early lots of Fuze 1\1108 did not hll~e a safety block inserted bebween the striker head and fuze body. Status--0bsolet e. Restriction on Use -Not to be used by Naval

Air Travel to Arm-None required. Indication of Arming--Arming pin and safety block missing.

Bombs in Which Used 1 Wlb. Target-Iclentification Bomb M75 100~lb. Incendiary Bomb Mli: 28

activities. l(X)-lb. Chemical Bomb AN-M47 and Mods

Figure 45.~-Nose Fuze M 7 08

RESTRICTED 51


C A n ir h C S

(9 R fr

Figure 46.-Outline Drawing of Nose Fuze AN-M 17 OA 7

Weight and Packing Weight of Fuze Fully Loaded-,~pI>rosilllat~~l~ 1 .O lb.

Weight of Booster-O.6 oz. tetryl. Standard Packing-When not issued with the bomb clusters-four wax- covered paper cartons, each contlaining twclvc fuzes, are pac*ked in a wooden crate measuring 22.9 in. s 10.9 in. s 10.9 in. and weighing 77 lb. gross.

RESTRICTED RES 52

OP 1548

Characteristics Action-Inst8antaneous upon impact. Modifications--M 110 differs from AN-M 11 OAl in that it requires a longer air travel to arm and has a three-segment safety ,block instead of a C-shaped safety block. Status-Ml lo-Obsolete; AN-Ml lOA-Service. (To be rcplaccld by Fuzc Ml 58.) Restriction on Use-Fuze Ml10 will not be used from Naval aircraft, See Page 8 for special pre-

BOMB NOSE FUZE AN-MI IoAl

.- n

RESTRICTED

cautions in the use of Fuze AN-MllOAl. Air Travel to Arm- (Approximate).

Mllo--- _____ --_-.. ----- ------m’---2200ft. AN-MlloAl------ -----------_-----725ft.

Indication of Arming-Safety block (or segments of block) missing.

Bombs in Which Used 20-lb. Frag. Bomb AN-M41 and Mods 115-lb. Chemical Bomb M70


I 3.6”

Figure 48.-Outline Drawing of Nose Fuze M7 7 IA2

Weight and Packing Weight of Fuze Fully Loaded-Approxinlfltely 1.4 lb. Weight of Booster-O.2 oz. black powder. Standard Packing--Fifty flues, each in a metal container, are packed in a wooden crate 15.3 in. x 15.3 in. s 12.0 in. and weighing 74 lb. gross.

Chc AC1 ins1

Ma safe

spa and h41 to CSCl EX( Ml

Sta FW

Res

we

RESTRICTED RES

t

OP 1548

RESTRICTED

BOMB NOSE FUZE Ml1 A2

Characteristics Action-Mechanical time, 5- to 92-sec. delay 01 instantaneous upon impact. Modifications-Fuze Ml 1 lA1 has a three-segment snfetv block and an arming vane with a four-in.

~~~an”as compared to the C-shaped safety block and. the arming vane with a t,hree-in. span of

JI111,12. MIllAl requires a longer air travel to mm than Ml1 11~2. Ml11 is like hIlllA1

tlsccpt that its minimuln time setting is 15 sec.

Except for these difl’ertnces, FUZCS, PI111 1,

Llllllll, and X/llllA2 arc similar.

Status-M 111 A2-Service ; being replaced by F~zc ~iN-R/1146. Ml 11 and Ml 11 A-obsolete.

Restriction on Use--Not) to be used in shipboard

operations.

RESTRICTED

Air Travel to Arm-(Approximate)

MlllB2-m _____ ~~ __~ --~----------- 1300 ft. Ml11 and MIllAl- ~_ .---___--_ 2200ft.

Indication of Arming-Safety block (or segments of block) missing.

Bombs in Which Used

Flare-M26 and Mods

Photoflash Bomb M46 and Mods Simable “Butterfly” Clusters M28 and M29”

*Sow Fuze 31111 is not> suitable for use in these clusters, because the time setting normally used should be less than the nliuimum setting of 15 sec. on the Nose Fuze 11111.

Figure 49.~-Nose Fuze M 7 17A2


a Mll2Ai -6.6” Mll3AI - 9.6”

- 13.6” --

i-l

-PRIMER DETONATOR Ml6AI

Figure 50.-Odine D rawing of Tail Fuxes M7 72A7, M7 73A7, M7 74A7

Weight and Packing Weights of Fuzes Fully Loaded-(Approxirm t (I)

M112Al-_-mm--.-- -____.. _-__-~~-~ - _ _ -2.3 lb. Mll?,Al-_---- ______ -----_-_._~.~ - -I- --- - _.---m-----_a.slb. M114Al-m--m- _-____._ __- _..-__ -._ -._ ------_e------2.81b.

Standard Packing-Twenty-five fuzes, each in a metal container, are packed

in a wooden crate whose dimersions are:

i+;x

AN-M112A1 AN-M113Al AN-M114Al

(‘x,lo : i;:c Weight (gross)

18.6 in. x 14.8 in. x 15.8 in. .112 lb. 21.6 in. x 14.8 in. x 15.8 in. 124 lb. 25.6 in. x 14.8 in. s 15.8 in. 141 lb.

1

RESTRICTED R 56

OP 1548 BOMB TAIL FUZES MllnA1. M113A1, M114A1

Characteristics Action-Impact, inertia firing, Interchangeable Primer Detonator M16Al with 4-5 or 8-15 sec.

&lay. Modifications---M112, hI113, Ml14 will take only Primer Detonator M 16. M112A1, M113A1, and

11114A1 are modified to take Primer Detonator 1ll6A1, but can also take Primer Detonator Ml6. Status-M112, M113, R/1114-Obsolescent.

MllZAl, M113A1, M114Al---Service.

Restriction on Use-Not to be used by carrier- tInsed aircraft: 8-15 WC. delay to be used for shore targets; 4-5 sec. delay to be used for ship Wgets. Air Travel to Arm-Approximately 100 ft. Indication of Arming--If the distance between the arming-wire holder and stem cup is greater

than ;/z in., the fuze should be considered armed.

Bombs in Which Used II112 and Mll2A1 loo-lb. G. P. Bomb AN-

AM30 and Mods wm 250-lb. G. P. Bomb AN-

M57 and Mods Ml13 and Mll3Al 500-lb. G. P. Bomb AN-

M43 and Mods 500-lb. G. P. Bomb AN-

M64 and Mods 500-lb. S. A. P. Bomb AN-M58 and Mods

Ml14 and Ml 14A1 1OOO-lb. G. P. Bomb AN-- M44 and Mods lOOO-lb. G. P. Bomb AN-

M65 and Mods 2000-lb. G. P. Bomb AN- M34 and Mods 2000-lb. G. P. Bomb AN- M66 and Mods IOOO-lb. S. A. P. Bomb AN-M59 and Mods

RESTRICTED

Figure 57.-Tail Fuzes M7 72A7, M7 73A7, M7 74A7

57

BOMB FUZE DATA

I a M 115-6.6”

M 116-9.6”

- 13.6”

PRIMER DETONATOR

M 16AI

Figure 52-O tl u ine Drawing of Tail Fuzes MI 15, Mt 16, M717

Weight and Packing Weights of Fuzes Fully Loaded- (Approximate)

Ml15 ~_- .-~~ ---. _--_-__--_-_-----_-- --2.71b. Mll6--- 2.9 lb.

M117--~~ . ~~_ -___~ -___~-- --~- __~-_____-___.. ~_---:3.21b.

Standard Packing-Twenty-five fuxes, each in a metal container, are packed in a wooden crate whose dimensions are:

58

Fuzv

Ml15 Ml16 Ml17

Weight Crate size (gross)

18.6 in, s 14.8 in. x 15.8 in. 119 lb. 21.6 in. s 14.8 in. x 15.8 in. 131 lb. 25.6 in. s 14.8 in. s 15.8 in. 148 lb.

RESTRICTED

OP 1548 BOMB TAIL FUZES Ml 15, Ml 16. Ml 17

Characteristics Action- -Impact, inertia firing. Interchangeable Pkcr Detonat’or Ml6Al with 4-5 or 8-15 sec. delay.

Modifications--NoIle.

Status--Service.

Restrictions on Use-84 5 sec. delay to be used for shore targets, 4-5 sec. delay to be used for ship targets.

Air Travel to Arm--Approximately 450-650 ft’.

Indication of Arming--If t,he distance between the eyelet and the vane-cup flange is greater than )( in., the fuze should be considered armed.

Bombs in Which Used Ml15 10%lb. Cr. P. Bomb AN-M30 and Mods

25O-lb. Cr. I’. Bomb AN-M57 and Mods XI116 5Wlb. Cr. P. Bomb AN-M43 and Mods

500-lb. Cr. P. Bomb AN-M64 and Mods 500-lb. S. ,\. P. Bomb AN-M58 and

MOdS

11117 10(K)-lb. Cr. I’. Bomb AN-M44 and Mods 1OOO-lb. G. I’. Bomb AN-3165 and

Mods 2000-11~. CT. P. Bomb AN-M34 and

Mods

2000-lb. G. P. Bomb AN-M66 and Mods

1000-11). S. ,I. I’. Bomb AN-M59 and

Xfods

Figure 53.--Tail Fuzes M7 75, M7 76, M7 77.

RESTRICTED . 59

BOMB FUZE DATA

Figure 54.-Nose Fuze AN-M 7 ZOA 7

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.1 lb.

Weight of Rooster-O.7 oz. tetryl. Standard Packing-Twenty-four fuzes, each in a metal container, are packed in a, wooden crate measuring 20.4 in. x 18.2 in. x 7.5 in. and weighing 58 lb. gross. Old er method packed 50 fuzes in a wooden crate weighing 98 lb. gross.

RESTRICTED 60

of’ 1548

‘RICTED

BOMB NOSE FUZE AN-M120Al

Bomb Nose Fuzes T32 (M118), T33 (MllS)-Honlh NOW Fuze T32 was stand-

ardized as the Ml 18 hut has subsequently I been dest’andardizcd to its previous T32 kignation. The bomb Nose Fuze T33 has ncv~r been standardizcld. Neither of thcsc fuzes is suitable for Navy use.

Characteristics Action--lnstuntancous upon impact.

Modifications--:IN-M12OAl differs from the AN-

bll20 only in requiring a shorter time to arm. Status-AN-M 12O-Obsoltwen t ; AN-M 120Al- Scrviw. A new fuze, the Mli’O, is similar to the

Figure 55.-Nose Fuze AN-M 120A 7

RESTRICTED

AN-M12OA1 except that it requires a still shorter

arming time (1.5 *0.3 sec.). Restrictions on Use-None. Because this fuze requires no air travel to arm and is extremely sensitive when armed, clxtremc care should be taken when handling bombs containing this fuze. See page 8 for special precautions.

Air Travel to Arm-Now required. AN-Ml20 arms by clockwork in 2.5 *O.3 SW. and AN- M120Al arms in I.9 kO.3 sec. after r&ase of the

arming pin. Indications-of Arming--,hning pin missing.

Bombs in Which Used Z&lb. Yara-Frag. Bomb AN-M40 and il/lods

23-lb. Para-Rag. Bomb M72 120-lb. Yara-Frag. Bomb M86

61

l- l.3”- I 1

Figure 56.--Tail L ong-Delay Fuzes M 7 23A?, M 7 24A I M 7 25A 7

clt

le

to le IW Cl1

tc

l-0

ca

w: st

Weight and Packing Weights of Fuzes Fully Loaded---(,4pprosimat~c)

Ml23,11-_ ~_ _- -~ --- 2.9 Ml24Al- __~_ ~_ M125Al- -~- - _---__-_-- : m:m--------m-- -

--- 3.1 _.~ -_ 3.4

Standard Packing-Twenty-four fmes, tlac:hlir. a metal~container, arc packed in a wooden crate.

Fuze Crate volume Weight M123Al 2.5 cn.’ ftl. 122 lb.

M124Al 2.9 cu.‘ft. 134 lb.

,Vl25Al 3.5 cu.-ft,. 1 149 lb.

Bc

62 RESTRICTED RI


I M 123Al-6.3” M 124AI- 9.3” M 125Al-13.3”

’ c

A j in

I N \; / *-

1 81

Y’f

Sl

R fit Ai

OP 1548 BOMB TAIL LONG-DELAY FUZES Ml 23A1, Ml 24A1, Ml 25Al

Characteristics

Bomb Fuzes M121, M122-These fuzes have been designecl and produced for special uses. Information concerning

t’hem may be obtained by special request to the Bureau of Orclnance.

Action-Chemical long-delay, l-144 hours, or

instantaneous on attempted withdrawal. Modifications--Ml23,21 series differ from the 11123 series in having no reduction gearing and an eight-bla,ded rather than a four-bladed arming

I-ane. Status--Ml23, Ml24, Plll25-Obsolescent

?r4123Al, Ml24A1, M125Al-Service Restriction on Use--Not to be returned to air- fields or carriers. Air Travel to Arm-

11123, Ml24, Ml25--80 to 100 ft. to initiate tlelay action; 900 to 1400 ft. to seal fuze against

leakage of solvent or entrance of moisture. k1123141, Ml24A1, >LI125A--Less than 100 ft,.

to initiate delay action and to seal fuze against leakage of solvent or entrance of moisture. Indications of Arming--,lny fuze which has been dropped more than 10 ft., or subjected to high temperatures, or which has had its vanes free tlo rotate must be considered armed. Special indi- (Biltors are provided in each shipping box to &OW

\&ether or not fuzcs ha,ve been subjected to high

storage temperatures.

Bombs in Which Used 11123, 11123Al loo-lb. G. P. Bomb L4N-M30

and Mods* 250-lb. G. P. Bomb AN-M57

11124, ZH124Al 500-lb. G. P. Bomb AN-M43 500-lb. G. P. Bomb AN-iM64 and Mods * 500-lb. S. A. P. Bomb AN- 1158 and Mods”

11125, I\ll25Al 1000-lb. G. P. Bomb AN-h144 loo@lb. G. P. Bomb AN-M65 and 3lods * loo@lb. S. A. P. Bomb AN-

59 and Mods”

2000-lb. G. P. Bomb AN-h/134 2000-lb. G. P. Bomb AN-M66

and I\ lads * .

*The Modifications of these bombs that have the adapter booster and base plate locking devices are the preferred bonlbh for 11s~ with thew fuzes.

Figure 57.--Tail long--Delay Fuzes M 123A1,

M724A1, M125A7

RESTRICTED 63

f-7 0

- 1 1

I

- -- , ----

BOMB FUZE DATA

2.4”

I

SAFETY [

Figure 58,-O u tl ine Drawing of Nose Fuze AN-M 7 26A7

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1 .l lb.

Standard Packing-Fifty fuzes, each in a metal container, are packed in a wooden crate measuring 21.2 in. x 18.8 in. x 9.8 in. and weighing 101 lb. gross.

OP 1548

ESTRICTED

BOMB NOSE FUZE AN-Ml26Al

Characteristics Action--Instantaneous upon impact. (Similar to Fuze AN-MllOAl but has no booster, as it is loaded only with a detonator.) Modifications-AN-Ml26 differs from the AN- 1l126Al in that the ,4N-Ml26 requires a longer

air travel to arm and has a three-segment safety block instead of a C-shaped safety block. Status-AN-%I.126 -Obsolescent.

AN-M126Al-Service (To be replaced

by Fuze Ml59.1 .

Restrictions on Use-AN-Ml26 is not to be used by Naval activities. See page 8 for special precautions in use of AN-M126Al. Air Travel to Arm- (Approximat e) .

AN-Ml26-2500 ft. AN-MlasAl-800 ft.

Indications of Arming-Safety block (or segments of block) missing.

Bombs in Which Used loo-lb. chemical Bomb M4T a’nd Mods.

RESTRICTED 670587-45 - 5

Figure 59.-Nose Fuze A N-M 7 26A 7

65


SAFETY , 4

Figure 60.-Outline Drawing of Nose Fuze M727

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.4 lb. Weight of Booster-O.6 oz. tetryl. Standard Packing-Twenty-five fuzes, each in a metal container, are packed in a wooden crate measuring 20.4 in. x 18.8 in. x 7.8 in. and weighing 59 lb. gross.

RESTRICTED

I Restr opera

RESTR

,3P 1548

TRICTED

BOMB NOSE FUZE Ml27

Characteristics Action-Mechanical time, 5-92 seconds, or in-

stantaneous upon impact. (Similar to fuze

MlllA2 except that it has a 0.6-0~. tetryl booster.) Modifications-None. Status-Obsolescent -Being replaced by fuze M128.

Restrictions on Use-Not to be-used in shipboard operations.

Air Travel to Arm--Approximately 1300 ft. In- dications of Arming-Safety block missing.

Bombs in Which Used Aimable Incendiary Cluster, AN-Ml 7Al. 50%lb. Chemical Bomb AN-M78 (with Adapter

Booster Ml 17.j

looo-lb. Chemical Bomb AN-M79 (with Adapter Booster Ml 17.)

RESTRICTED

Figure 6 7.-Nose Fuze M 7 27

67


68

-r-----n

Figure 62.-Outline Druwing of Nose Fuze AN-M728

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.6 lb.

Weight of Booster--O.7 oz. tetryl Standard Packing--Fifteen fuzes, each in a metal container, are packed in a wooden crate measuring 20.6 in. x 9.1 in. x 12.2 in. and weighing about 45 lb.

gross. .

RESTRICTED

Ch arac Action ous uy except Modifi Status- Restric Air Tr; Indical

RESTRI

OP 1548

STRICTED

BOMB NOSE FUZE Ml28

Characteristics Action-Mechanical t’ime, 5-92 sec. or instantane- 011s upon impact. (Similar to F uze AN-31146 except had a 0.6-02;. tetryl booster.) Modifications-None. Status-Service. Restrictions on Use-None. Air Travel to Arm-Approximately 1300 ft. Indication of Arming-Safety block missing.

RESTRICTED

Bombs in Which Used Aimable Incendiary Cluster AN-M 17A1 500~lb. Chemical Bomb M78 (with Adapter

Booster M 117) 1000~lb. Chemical Bomb AN-M79 (with Adapter

Booster M 117)

Figure 63.-Nose Fuze A N-M 128

69

B6MB FUZE DATA OP 1548

BOMB (BUTTERFLY) AMIDSHIPS FUZE MI 29

Bomb in Which Used Characteristics Action-Impact or aerial burst. * Modifications-None. Status-Service. Restriction on Use-None. Air Travel to Arm--After release from the cluster, approximately 50 ft. of air travel are required

to activate the clockwork mechanism. Indication of Arming-If the arming spindle is

unthreaded more than j/8 inch, t,he fuze should be .- considered armed.

Four-lb. Fragmentation (Butterfly) Bomb MS3 Note-Fuzes Ml29 are installed in the bomb and all settings are made at the factory. No attempt should ever be made to remove the fuzes, change the settings, or work on the fuzes in any way.

*All fuzes preset impact-aerial burst

by manufacturer feature not used by

for action Navy.

upon

Figure 64.- Fragmentation (Butterfly) Bomb M83, Side View, Open, Showing location o

BC

Char Actia min. ’

Mod Statu Rest] Air ‘I

aPPr’ activ India withc fuze

Born FO

Note all SC

ever the s

If Amidships Fuze

RESTRICTED

*DI or 30

Figur

RES

1548

b M83 lb and ;tempt

:hange

&Y*

BOMBI(BUTTERFLY) AMIDSHIPS FUZES Ml 29, Ml 30 (T48), MI 31 (T49)

BOMB (BUTTERFLY) AMIDSHIPS FUZE Ml30 (T48)

Characteristics Action-Mechanical time, long delay 10 to 30 min. * Modification-None. Status-Service. Restriction on Use---Nom. Air Travel to Arm-After release from the cluster, approximately 50 ft. of air travel are required to

activate the clockwork mechanism. Indication of Arming-When the arming stem is withdrawn from the fuze more than >/s in., the

fuze should be considered armed.

Bomb in Which Used Four-lb. Fragmentation (Butterfly) Bomb M83

Note--B’uzes Ml30 are installed in the bomb and all settings are made at the factory. No attempt ever should bc made to remove the fuzes, change t,he settings, or work on the fuzes in any way.

*Delays vary with each fuze. or 30 min. by t,he manufacturer.

I’reset at either 10, 20,

figure 65.- Fragmentation (Buiferfly) Bomb M83, Top

View, Open

RESTRICTED

BOMB (BUTTERFLY) AMIDSHIPS FUZE Ml 31 (T49)

Characteristics Action-Anti-disturbance. Modifications-None. Status-Experimental service. Restrictions on Use--None. Air Travel to Arm--After release from the cluster, approximately 50 ft. of air travel are required

. partially to arm the fuze. Completion of arming occurs after ground impact. Indication of Arming-When the arming stem is withdrawn from the fuze more than >‘s in., the

fuze should be considered armed.

Bomb in Which Used Four-lb. Fragmentation (Butterfly) Bomb nil83

Note--Fuzes Ml31 are installed in the bomb and all settings are made at the factory. No attempt ever should be made to remove the fuzes or change the settings, or work on the fuzes in any way.

Figure 66.- Fragmenfation (Butterfly) Bomb M83,

Closed

71


M 132- 6.6” Ml33-9.6” M 134-13.6”

I

Figure 67.-Outline D rawing of Tuil long-Delay Fuzes M 7 32, Ml 33, M 7 34

Weight and Packing

Weights of Fuzes Fully Loaded-((Approximate)

Ml32 ___________ ~~_ ~._~~__-~_ ~_ .~~_.--_-------__---_-- 2.1 MlM-_ _--___- -~ _~- ~~. ~~~- ~~ -_~ _~~ ..___________ -~~ 2.3 MlM- ____ - -__- ~__-~---~----~-~~~ ~~- ~_~~~-_~~-_-~~--~~ 2.6

Standard Packing-Twenty-five fuzes, each in a metal container, are packed in a wooden crate whose weight and dimensions arc:

.

Crate size Weight (gross)

14.8 in. x 15.8 in. s 19.2 in. 124 lb.

14.8 in. x 15.8 in. x 22.2 in. 137 lb.

14.8 in. x 15.8 in. s 26.3 in. 153 lb.

I

72 RESTRICTED

-

Ch AC at

dn MI Sti Re fiel Ai1 Inc arr

RE!

OP 1548

‘RICTED

BOMB TAIL LONG-DELAY FUZES Ml32, Mi33, Ml34

Characteristics Action-Chemical, long delay, 16 min. (average) at 80’ IF. or instantaneous on attempted with-

draw al, Modifications-None. Status--Service. Restriction on Use-Not to be returned to air- fields or carriers. Air Travel to Arm---Approximately 100 ft. Indication of Arming-No external indications of arming.

RESTRICTED

Bombs in Which Used h1132 loo-lb. G. P. Bomb AN-1M30 and Mods

250-lb. G. P. Bomb 9N-M57

M133 500-lb. G. P. Bomb ,4N-M43 500-lb. G. P. Bomb 3N-M64 and Mods

500~lb. S. A. P. Bomb -4N-M58 and Mods

Ml34 loo@lb. G. P. Bomb AN-M44 .

1000-lb. G. P. Bomb 4N-M65 and Mods 1000-lb. S. A. P. Bomb AN-M59 and AIods 20oo-lb. G. P. Bomb AN-M34 2000-lb. G. P. Bomb ,4N-M66 and Mods

r-* .,*

Figure 68.-Tail l, ong-Delay Fuzes M132, M733, M734

.-

BOMB FUZE DATA

I-‘-- I .6”.-{

Figorec69.-Outline Drawing of Nose Fuze M I35A I

Charactc Action- ous upor lower bo

Modifica in havin

instead ( Status-

Weight of Booster-l.9 oz. tetryl.

’ 1548

Characteristics Action-Mechanical time 5-92 sec. or instantane-

ous upon impact. (Similar toFuze Ml 1 lA2, with lower body and booster of Puze AN-MlO3).

Modifications--Ml%Al differs from Ml35 only in having a minimum time setting of ten sec. instead of five sec. Status-Not procured for Naval use.

Restriction on Use-Not to be used by Naval activities. Air Travel to Arm-Approximately 1300 ft. Indication of Arming-Safety block missing.

Bombs in Which Used May be used in any bomb in which Puze AN-

MI103 will fit. (See page 15.)

Figure 70.~-Nose Fuze M735A 7

:TED RESTRICTED

_--._

76

BOMB FUZE DATA

Figure 77 .-Outline Drawing of Nose Fuze M 7 36AI

OP 1548

Weight of Booster-LO oz. tetryl

RESTRICTED

OP 1548

CTED

BOMB NOSE FUZE Ml36141

Characteristics D

Action-Mechanical time, 5.0-30.6 sec. or instantaneous upon impact (Same as fuze MI35 except for faster clock and time scale.) Modification-kl136Al differs from Ml36 only in having a minimunr time setting of ten instead of five sec. Status--Not procured for Naval use.

Restriction on Use-Not to be used by Naval activit,y. Air Travel to Arm-Approximately 1300 ft. Indication of Arming-Safety block missing.

Bombs in Which Used &lay be used in any bomb in which Fuze AN-

Ml03 will fit. (See page 45.)

RESTRICTED

Figure iTI.---Nose Fuze Ml 36A 1

~_--_ __-.-- ~---

BOMBIFUZE DATA OP 1548

Figurel73.-Outline Drawing of Nose Fuze Ml38

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.4 lb. Weight of Booster--O.3 oz. tetryl. Standard Packing-Twenty-five fuzcs, each in a metal container, are packed in a wooden crate measuring 20.4 in. x 18.8 in. x 7.8 in. and weighing 59 lb. gross.

78 RESTRICTED

Charac Action- taneou!

RESTC;


Special Fuze Ml37 -This fuze has been designed and produced for special uses. Information concerning it will be supplied by special request tlo the .Bureau or Ord- nance.

lharacteristics iction-Mechanical time, 5-92 sec. or instan- aneous on impact. (Similar to Fuze MlllA2

IESTRICTED

except that it has a 0.3 oz. tetryl booster.) Modifications-None. Status-Obsolescent-Being replaced by AN- M145. Restriction on Use-Not to be used in shipboard operations. Air Travel to Arm--Approximately 1300 ft. Indication of Arming-Safety block missing.

Bombs in Which Used Aimable Incendiary Cluster AN-M17 and Mods Aimable Incendiary Cluster E6R2

Figure 74.-Nose Fuze M7 38

79


c-----16”- .


Figure 75.-Outline Drawing of Nose Fuze AN-MI 39A 1

Weight and Packing Standard Packing-Twenty-five fuzes, each in a

Weight of Fuze Fully Loaded-Approsima t el y metal container, are packed in a wooden crate

3.7 lb. measuring 22.3 in. x 17.3 in. x 9.2 in. and weighing

Weight of Booster--l.9 OZ. tetryl 132 lb. gross.

80 RESTRICTED

Charac Action- (Simila Modifil except incorpc M103A Status-

Restric Naval feature Air Tra

510 f 765 f

RESTRI 67

OP 1548

ITH t-4 BOMB

each in a

oden crate

d weighing

:STRICTED

BOMB NOSE FUZE AN-M139Al

Characteristics Action-Impact, instantaneous or O.Ol-sec. delay. (Similar to Fuze AN-M103Rl except for delay.) Modifications-Pull39 is similar to Fuze AN-M 103 except for O.Ol-sec. delay time.’ Fuze AN-Ml39Al incorporates added safet,y features of Fuze AN- !bI103Al. Status--M139--Obsolescent

AN-M 139Al-Service Restriction on Use-M139-Not to be used by

Naval activities because of inadequate safety features. AN-M 139Al --No restrictions. Air Travel to Arm -(Approximate)

510 ft. for delay 765 ft. for instantaneous

Indication of Arming--Safety discs missing.

Bombs in Which Used

loo-lb. Aircraft Mine AN-Mk 13 Mod 1 go-lb. Rag. Bomb M82 All bombs* weighing 100 lb. and over t’hat re-

ceive a nose fuze except Chemical Bomb AN- M47A2, Chemical Bomb vM70, and Navy IOO-lb.

G. P. Bomb Mk 4 and Mods.

*OIW auxiliary booster is required when used in Kavy

bOlIlbS. Must use special vane assembly and set on I SST. when used with flat-nosed depth bombs.

Figure 76.~-Nose Fuze AN-M139AI

RESTRICTED 81

OP 1548

H BOMR ,

iSTRlCTED

BOMB NOSE FUZE AN-M140A1

:haracteristics ction-Impact, instantaneous or 0.025-sec. delay. Similar to Fuze AN-MI03Al except for delay me.) Iodifications-Ml40 is similar to Fuze AN- 1103 except for 0.025 sec. delay. Fuze AN- 1140Al incorporates adcled safety features of ‘uze AN-M103Al. ltatus-M140-Obsolescent.

AN-Ml 4&U--Service. lestriction on Use -Ml40-Not, to be used by Java1 activities because of inadequate safety sat ures. AN-M 140Al ---None.

RESTRICTED

Air Travel to Arm--Approximately 510 ft. for delay; 765 ft. for instantaneous. Indication of Arming-Safety discs missing.

Bombs in Which Used 1000-lb. Aircraft Mine AN-Mk 13 Mod 1. go-lb. Rag. Bomb M82.

All bombs* weighing 100 lb. and over that receive a nose fuze except the Chemical Bomb AN-M47A2, Chemica,l Bomb M70, and Navy loo-lb. G. P. Bomb Mk 4 and Mods.

*One auxiliary booster is required when used in Navy Bombs. Use special vane assembly set on IKST when used in flat-nosed depth bombs.

Figure 78.-Nose Fuze AN-M74OAl

83


Bomb Fuze M141-No fuze has been issued with this designation as of 1 May 1945.

BOMB NOSE FUZE Ml42

Characteristics Action-Impact (all-ways action), instantaneous. Modifications--Nom. Status-Service. Restritition on Use-None. Air Travel to Arm-None required. Arms upon release from cluster.

Indication of Arming-Arming pin missing.

Bombs in Which Used 1 O-lb. Incendiary Bomb M74.

Note-This fuze always comes assembled in the bomb.

BOMB TAIL FUZE Ml43

Characteristics

Action-Bouchon, Grenade type.

Air Travel to Arm-None required. Indication of Arming--No armed condition, fires upon withdrawal of arming wire.

Modifications-None.

Status-Scrviw. Bombs in Which Used Restriction on Use---Now. loo-lb. Smoke Strcumcr M87

84 RESTRICTED

Chara Action stanta Modif Status Restri p11otot Air Tr Indica

Bomb TN

and T

t

RESTI

1548

1 the

TED

BOMB FUZES M142, M143, Ml44

BOMB NOSE FUZE M144

Characteristics Action--i\/lcchanical time, 1.6-30.6 SW. or instantaneous upon impact. Modifications--None, Status~--S~I1,viccl. Restrictions on Use- -Not to bc used iu flares or j)hotoflash bombs. Air Travel to Arm---Approximately 50 ft. Indication of Arming--S:LfcAty block missing.

Bombs in Which Used Tflrg:‘(‘t-II~(‘lltjti(latiorl I3ombs M89, R190, A198,

and T22

Figure 79.-Nose Fuze M744

RESTRICTED

-I= 3.0” c

SAFETY

n BLOCK

Figure 80.-Outline Druwing of Nose Fuze M744

Weight and Packing

Weight of Fuze Fully Loaded--Approximately 1.6

lb.

Weight of Booster-O.2 oz. black powder.

Standard Packing--Fifteen fuzes, each in a metal container, arc packed in a wooden crate 20.6 in. x 9.0 in. s 12.2 in. and weighing about 45 lb. gross.

85


86

I I I BLOCK 1

Figure 81.-Outline Drawing of Nose Fuze AN-M745

iI a UP

3

t 1 1 c9

* 0 0

Weight and Packing Weight of Fuze Fully Loaded---Approximately I .G lb. Weight of Booster-O.3 oz. tetryl. Standard Packing--Fifteen fuzes, each in a metal container, are packed in a wooden crate measuring 20.6 in. x 9.0 in. x 12.2 in. and weighing about 45 lb. gross.

RESTRICTED

Charact

Action- ous upc except t

Modific:

Status-

RESTRI

P 1548

CTED


Characteristics Restrictions on Use-None.

Action-Mechanical time, 5-92 sec. or instantaneous upon impact. (Similar to F uze AN-Ml46

Air Travel to Arm-Approximately 1300 ft. Indication of Arming-Safety block missing.

except that it has a smaller t etryl booster.)

Modifications-None.

Status-Service.

Bombs in Which Used Aimable Incendiary Cluster AN-11 17 and IMods Simable Incendiary Cluster E6R2

Figure 82.-Nose Fuze AN-M 745

RESTRICTED 81


Figure 83.-Outline Drawing of Nose Fuze AN-M746

Weight and Packing Weight of Fuze Fully Loaded--Approximately 1.6 lb. Weight of Booster-O.2 oz. black powder. Standard Packing--Fifteen Fuzes, each in a metal container, are packed in a wooden crate measuring 20.6 in. s 9.0 in. x 12.2 in. and weighing about 45 lb. gross.

88 RESTRICTED

Charac Action- upon ir that df when tl spinner Modific Status-

RESTRI

>P 1548 BOMB NOSE FUZE AN-Ml46

Characteristics Action- Mechanical time,, 5-92 sec. or instnn ta neous upon impact. (Similar to F uze M 11 lA2 except that detonator is out of line with the striker when the fuze is completely unarmed and has a spinner to aid in ejecting the safety block.) Modifications-None.

Restriction on Use-None. Air Travel to Arm-Approximately 1300 ft. Indication of Arming-Safety block missing.

Bombs in Which Used Aircraft Parachute Flare AN-M26 and Mods. Photoflash Bomb AN-M46 and Mods.

Status-Service.

RESTRICTED

Aimable “Butterfly” Clusters M28 and M29.

Figure 84.-Nose Fuze AN-M 746

89


Figure 85-O tl’ D u me rawing of Nose Fuze AN-M 747

Chal

Attic tai

Mod

1 S tat1

Weight and Packing

Weight of Fuze Fully Loaded-Approximately 1.6 lb. Weight of Booster-O.3 oz. tetryl. Standard Packing--Fifteen fuzes, each in a metal container, are packed in a wooden crate measuring 20.6 in. x 9.0 in. x 12.2 in. and weighing about 45 lb. gross.

90

OP 1548

STRICTED


Characteristics

Action-Mechanical tilne, 5-92 sec. or instantaneous upon impact.

Modifications-None. ’

Status-Service.

Restrictions on Use-None Air Travel to Arm-Approximately 1300 ft. Indication of Arming-Safety block missing.

Bombs in Which Used

loo-lb. Target Identification Bomb M84

Figure 86.-Nose Fuze AN-M747

RESTRICTED 91

BOMB FlJZE DATA OP 1548

5:8”

rrgurel87.-Outline Drawing of Nose Fuze Ml48

Weight and Packing

Weight of Fuze Fully Loaded-Approximately 3.7 lb. Standard Packing--Nine flues, each in a metal container, are packed in a wooden crate having a I-olume of 1.2 cu. ft. and weighing 50 lb. gross.

92 RESTRICTED

Character

Action-11 (Similar tc and body Japanese 1 Modificati nation and found in Iv Status-SC Restriction

RESTRICTE,

BOMB FlJZE DATA OP 1548

5:8”

rrgurel87.-Outline Drawing of Nose Fuze Ml48

Weight and Packing

Weight of Fuze Fully Loaded-Approximately 3.7 lb. Standard Packing--Nine flues, each in a metal container, are packed in a wooden crate having a I-olume of 1.2 cu. ft. and weighing 50 lb. gross.

92 RESTRICTED

Character

Action-11 (Similar tc and body Japanese 1 Modificati nation and found in Iv Status-SC Restriction

RESTRICTE,

BOMB NOSE FUZE Ml48

Characteristics

Action--Impact, instantaneous or O.lO-sec. delay. (Similar to AN-M103Al except that booster cap and body threads have ber>n modified to fit Japanese Navy bombs.) Modifications-Experimental lots had T54 acsig- nation and did not incorporate: all safety features found in M148. Status-Service Restrictions on Use-Because of inadequate safety

features, fuzes with experimental designation T54 are not to be used by Naval activities. No restrictions on use of fuzes with Ml48 designation. Air Travel to Arm--(Approximate)

510 ft. for delay 765 ft. for instantaneous

Indication of Arming-Arming discs missing.

Bombs in Which Used

Japanese Navy bombs up to 250 kg. in size

Figure 88.-Nose Fuze Ml48

:TED 11 RESTRICTED


Figure 89.-Outline Drawing of Nose Fuze M 149

.

Weight and Packing

Weight of Fuze Fully Loaded-A4pproxinlately 5.1 lb. Weight of Booster-l.9 oz. tetryl Standard Packing-Six fuzes, each in a metal container, are packed in a wooden crate 20.4 in. x 13.0 in. x 10.1 in.

94 RESTRICTED

Charac

Action- in air fi Modific Status- Restricr based a

RESTRI

3f’ 1548 BOMB NOSE FUZE Ml49

Characteristics

Action-Instantaneous upon impact or will burst in air from blast pressure. Modifications--None. Status--Service.

Air Travel to Arm-Approximately 250 ft. Indications of Arming-If arming vane cup or release pin is missing, the fuze is armed.

Bombs in Which Used

Restrictions on Use-Not to be used by carrier- May be used in any bomb in which Fuze AN- based aircraft. Ml03 will fit. (See page 45.)

ICTED RESTRICTED

Figure PO.-Nose Fuze Ml49

96

BOMB FUZE DATA

Figure PI.-Outline Drawing of Tail Fuze A4751

Weight and Packing Weight of Fuze Loaded--Approximately 2.0 lb. Standard Packing-Fifteen fuzes, each in a metal container, are packed in a rvooden crate measuring 19.3 in. s 11.4 in. s 8.3 in. and weighing 51 lb. gross.

Chal Actic Mod natel Stati Rest Air relea India

Born 10

Note boml

RES

OP 1548 BOMB TAIL FUZES Ml50, Ml51

BOMB TAIL FUZE Ml50

Characteristics Action-Impact (all-ways action), instantaneous. Modifications- Fuze M 150 was formerly desig- nated Fuze M41. Status--Service. Restrictions on Use-None. Air Travel to Arm--None required: arms -upon release from cluster. Indications of Arming--Arming pin missing.

Bomb in Which Used IO-lb. Smoke Bomb M77.

Note-This fuze always comes assembled in the bomb.

Figure 92.--Tail Fuze M 150

BOMB TAIL FUZE Ml51

Characteristics Action-Impact, inertia firing, 8-15 sec. delay. Modifications-None. Status-Service. Restriction on Use-Should be used in bombs from wing racks only. Air Travel to Arm-Approximately 200 ft. Indication of Arming-If the arming stem is missing or more than 1): in. of the threaded portion of the arming stern is visible on one side of the fuze, the fuze should be considered armed.

Bombs in Which Used 100~lb. G. I’. Bomb AN-M30 and Mods (with

Antiricochet Device M 16)

250~lb. G. P. Bomb AN-M57 and Mods (with Antiricochet Device h’ll6)

500-lb. G. I’. Bomb AN-M64 anal Mods (with Antiricochet Device M 17)

RESTRICTED G’iOrlS7- 2;, --- -7

Figure 93.-Tail Fuze M 15 7


-RED

Figure 94.-Oufline Drawing of Tail Fuze Ml52

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.6 lb. Weight of Booster-O.3 oz. tetryl. Standard Packing-Fifteen fuzes, each in a metal conlaitlcr, arc pacl~cd in a wooden crate nleasuring 20.6 in. s 12.2 in x 9.0 in.

98 RESTRICTED

Characi Action- neous il cept th been rc’ Modific, Status-

RESTRI

OP 1548 BOMB TAIL FUZE Ml52

fi

Characteristics Action-Mechanical time 5-92 sec. upon instantaneous impact. (Similar to N ose Fuze &I146 except that vane pitch and thrust bearings have been reversed arld it has a 0.3-0~. tetryl booster.) Modifications-None. Status-Service.

Restriction on Use--None. Air Travel to Arm-Approximately 1300 ft. Indication of Arming-Safety block missing.

Bombs in Which Used Aimable Incendiary Clusters E46 and E48 ,!imable Chemical Bomb Clusters E61 and E67

fSTRlCTED RESTRICTED

Figure 95.-Tail Fuze M 752

99


100

-RED

Figure 96.-Outline Drawing of Tail Fuze M753

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.6 lb. Weight of Booster-O.3 oz. tetryl. Standard Packing--Fifteen fuzes, each in a metal container, are pRcls;ed in a . . wooden ci*nt,t~ lnclasurini 20.6 in. x 12.2 in. x 9.0 m.

RESTRICTED

Character Action-b taneous 1 Ml46 exe

and it htts Modificati Status--O

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L BOMB TAIL FUZE Ml53

Characteristics Restriction on Use-None.

Action--Mechanical tjime, 5-92 sec. or instantaneous upon impact. (Similar to Nose Fuze

Air Travel to Arm-Approximately 1300 ft,. Indicatiotw qf Arming-Safety block missing.

Ml46 except tlhat vane pitch has been reversed and it has a 0.3 t’etryl booster.) Modifications-None, Status-Obsolesr,cnt: renlaced bv 3152.

Bombs in Which Used Aimable Incendiary Clusters E46 and E48 Aimable Chemical Bomb Clusters E61 and IG67

.

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Figure 97.--Tail Fuze M 753


Character1

Action-Ir

Modificati

Status-S

Restriction activities 1

+------ i.o~~-~ Figure 98.-Outline Drawing of Tail Fuze M 7 54

Weight and Packing Weight of Fuze Fully Loaded-Approximately 0.6 lb. Weight of Booster-O.1 oz. tetryl. Standard Packing--Fifty metal containers, each containing one fuze and one Rurster C8R1, are packed in a wooden crate.

102 RESTRICTED RESTRIC


Figure 7 OO.-Outline Drawing of Nose Fuze M755

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.4 lb. Weight of Booster-O.2 oz. black powder. Standard Packing-Twenty-five fuzes, each in a metal container, are packed in a wooden crate measuring 20.4 in. x 18.2 in. x 7.5 in. and weighing 58 lb. gross.

104 RESTRICTED

Cha Acti tam but ejec Mot Stal Res PhO


Characteristics Action-Mechanical time, 5-92 sec. or instantaneous upon impact. (Similar to Fuze Ml 1 lA2, but lacks reduction gearing and has safety block ejection spinner.) Modifications-None. Status-Service. Restrictions on Use--Not to be used with flares or photoflash bombs.

Air Travel to Arm-Approximately 50 ft. (G-9 turns).

Indication of Arming-Safety block missing.

Bombs in Which Used Fragmentation Cluster M26

Fragmentation Cluster M27

RICTED RESTRICTED

Figure 7 0 7 .--Nose Fuze M 155

BOMB FUZE DATA 0P 1548 -

Figure I 02.~Fuze M 7 57

Weight and Packing Weight of Fuze Fully Loaded-Approximately 0.8 lb. Weight of Burster-2.5 grains tetryl. Standard Packing-Fifty metal containers, each containing one fuze-and*one burster C8R1, are packed in a wooden crate.

I Bon desi Infc will Rur

Characi Action- Modifier

106 RESTRICTED RESTRI

BOMB FUZE (ANEMOMETER ARMING) 157

Bomb Fuze M156--This fuze has been designed and produced for special uses. Information concerning the Fuze M 156 will be supplied on special reqliest to the Bureau of Ordnance.

Characteristics Action--Impact (all-ways action), instantaneous. -- --^ . -- Modifications-N one.

Status-Service.

Restriction on Use-None.

Air Travel to Arm-Approximately 150 ft.

Indications of Arming-The fuze is armed when the vanes are missing. If the arming vane assembly has separated from the fuze body by more

be considered armed. than 34 in. the fuze must

Bombs in Which Used Droppable gas tanks

Igniters Ml5 and Ml6. (Napalm filled) with

Figure 103.-Fuze M 157

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LCharactc

Action- Ml59 al booster i metal ho

Modifica

SCatus- Restricti

Figure 7 04.-Outline Drawing of Nose Fuze M 158

Weight and Packing

Weight of Booster-O.6 oz. tetryl. Standard Packing-Fifty fuzes, each in a metal container, are packed in a wooden crate measuring 21.2 in. x 18.8 in. x 9.8 in. and weighing 101 lb. gross.

108 RESTRICTED RESTRll

lCharacteristics Air Travel to Arm-Approximately 1200 ft.

Action---Tnstantancous upon impact. Ml58 and Ml59 ar(’ the sanw cxccpt that in Ml 59 the booster is replaced by a sn;all totryl column in a

Indications of Arming-If the distance between the striker plate and the arming ‘vane is >$ in., the fuzc should be considered armed.

metal holder.

Modifications-Norlc.

Status-Scrvicc.

Restrictions on Use-- Nono.

Bombs in Which Used M 158 20-lb. Frag. Bomb AN-41 and Mods

115-lb. Chemical Bomb h170 Ml59 100-lb. Chemic*al Bomb I647 and Mods

* Y

1548 BOMB NOSE FUZES Ml58 AND Ml59

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Figure 7 OS.--Nose Fuze M 158


- 13.6”

YELLOW BAND

-PRIMER DETONATOR M 14

Figure 706.-O tl u ine Drawing o/ Tuil Fuzes M760,

M761, M762

Weight and Packing Weights of Fuzes Fully Loaded-(Approximat’e)

~~lSO____--__---__---------------------------------------- 2.7lb.

hll61_-__--___-__-_-_________________-_------------------- 2.9lb.

X~162_________-----__-----------------------~-------------- 3.2lb.

Weight of Booster-l .9 oz. tetryl. Standard Packing-Twenty-five fuzes, each in a metal container, are packed in a wooden crate whose weight and dimensions are:

1;1lZC Crate dimensions Wei&it (gross)

160 24.3 in. x 14.8 in. x 15.0 in. 116 lb

161 27.3 in. x 14.8 in. x 15.0 in. 129 lb.

162 31.3 in. x 14.8 in. x 15.0 in. 145 lb.

Charal Action Prime] 0.025-,

hf1001

time.) Modifi Status Restric Air Tr Indica the ey on the be con

Fig1

110 RESTRICTED RESTF

1548 BOMB TAIL FUZES Ml60, M1~61, Ml62

Characteristics Bombs in Which Used Action-Impact, inertia firing, interchangeable Primer Detonator Ml4 with non-delay, O.Ol-, 0.025-, O.lO-, or 0.24-sec. delay. (Similar to AN- h1lOOA2 Series fuzcs, but, have longer arming time.) Modifications-Now. Status-Service. Restriction on Use--None. Air Travel to Arm-Approximately 2000 ft. Indications of Arming-If the distance between the eyelet on the gear mechanism and the flange on the vane cup is more than 5 in., the fuze should be considered armed.

Ml60 loo-lb. G. P. Bomb AN-M30 and Mods 250-lb. G. P. Bomb AN-M57 and Mods 220-lb. Frag. Bomb AN-M88 260-lb. Frag. Bomb M81

Ml61 500-lb. G. P. Bomb AN-M43 and Mods 500-lb. G. P. Bomb AN-M64 and Mods 500-lb. S. A. P. Bomb AN-M58 and

Mods 500-lb. Incendiary Bomb AN-M76 5OO-lb. Chemical Bomb AN-M78

M 162 lOOO-lb. G.P. Bomb AN-M44 and Mods 1000-lb. G.P. Bomb AN-M65 and Mods 1000-lb. S. A. P. Bomb AN-M59 and

Mods

Figure 707.--Tail Fuzes M760, M767, M762

lOOO-lb. Chemical Bomb AN-M79 2000~lb. G. P. Bomb AN-M34 2000-lb. G. P. Bomb AN-M66 and

Mods . 4000-lb. L.C. Bomb AN-M56 and Mods

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Figure 7 08.-Outline D rawing of Nose Fuzes M763, M764, M765

Charactl Action--

(These J AN-111 Modifier Status ~- Restricti Air Tray delay: 2 Indicatic:

Weight and. Packing Weight of Fuze Fully Loaded -Approxirnate!y 3.7 lb. Weight of Booster-l.9 oz. tetryl Standard Packing-Twenty-five fuzes, each in a metal container, are packed in a wooden box measuring 22.3 in. x 17.1 in. x 9.2 in. and weighing 132 lb. gross

112 RESTRICTED RESTRK 6705

1548 BOMB NOSE FUZES M163, Mi64, Ml65

Characteristics Action-~ll(j3---1311~)RCt, instnntancous or 0.10

sec. d&y

A11 &----11np&, instmtaneous or 0.01

sec. tlel8y

Allc,r>- --lmpwct~, instnntaneous or 0.025

SC%‘. tlclay

(These fuws :uc sill&u* to Fuzcs ,IN-M103d1,

,1N-R113!11~1 ) nntl *I w-1\1140L11 .)

Modifications-Now. Status --Service.

Restrictions on Use- -Now. Air Travel to Arm -iIl)p~(~knately 1500 ft. for de1 tiy: 2200 ft. for instnntarreous.

Indication of Arming --Safdy blocks nlissing

RESTRICTED 670557--45---S

Bombs in Which Used 1000-lb. Aircraft Mine AN-Ml< 13 Mod 1

w-lb. Frag. Romb Ms2.

All bombs* weighing 100 lb. and over that

received a nose fuze except the Chemkal Bomb

AN-M47A2, Chemical Bomb ?u170, and Navy

loo-lb. G. P. Bomb 1211~ 4 and LIotls.

*One auxiliary booster is required vhcn used in Navy bombs. Must, use special vane assembly when used in flat-nosed depth bombs. Special 4-h. diameter vane, required for use in the 00-lb. Rag. Boml~ M-82, is supplied with the fill asscmblics of bombs.

Ml63

Figure 709.-Nose Fuzes M 163, M 164, M765

114

11 Cl

---f_,._l Figure 11 O.-Outline Drawing of Nose Fuze M770

Chal Actic FUZC Mod Stati

Weight and Packing Weight of Fuze Fully Loaded-Approximately 1.12 lb. Weight of Booster-O.7 oz. tetryl. Standard Packing-Twenty-four fuzes, each in a metal container, are packed in a wooden crate measuring 20.4 in. x 18.2 in. x 7.5 in. and weighing 58 lb. gross.

RESTRICTED RE!

Bomb Fuzes M166, M167, M168, Ml69--- No fuzes with these designat’ions have been issued as of 1 3\9ay 1945.

Characteristics Action-Instantaneous upon impact. (Similar to Fuze AN-M12OA1, but has shorter arming time.) Modifications-None. Status-Service.

Restrictions on Use-None. Because this fuze requires no air travel to arm and is extremely sensi-

RESTRICTED

tive when armed, extreme care should be taken in handling bombs containing it.

Air Travel to Arm-None required-Arms in 1.5

&IO.3 sec. after release of the arming pin.

Indication of Arming-Arming pin missing.

Bombs in Which Used 2%lb. Para-Frag. Bomb AN-M40 and Mods Z-lb. Yara-Frag. Bomb M27

Figure 7 7 7.-Nose Fuze M770

DISTRIBUTION

Additional copies of OP 1548 may be obtained by submitting requesls on NAVORD FORM 1, ORDNANCE PUBLICATIONS AND FORMS R,EQ- UISITION, in accordance with the proccdurc outlined in OCL X545, or t’o the nearest Ordnance Publications Distribution Center: Navy Yard, Washington 25, D. C.; Adal<, Alaska; Mnrc Isla~nd, Culif.; Guam Island, Marinn:~s; Pcnrl Harbor, T. H.; Subic Bay, P. I. NAS and Distribution Cen- ter mailing addresses should bo obttLined from the Standard Navy Distri- bution List or from the rcversc side of NAVORD FORM 1.

Standard Navy Distribution List No. 29 ((1) and 33 (It).

2 copies unhss otberwiso noted.

1. a, c, tl, 11, i, 1; 2. a, c, f, 1, s, u*; 3. c, o*, t, u, v*, dd, www-yyy; 3. (5 copies), b-d, m *; 5. b (London only); 6. a, b; 7. a, b, c, f, h, j, y*; 7. (5 copies), cl, p, s, x, z; 8. b, h, i, j ~ 11 (SPECIAL LIST A, B, C, G, II, K, P, S, BB, EE, GG); 10. b-d, g*, j*, m, n, gg, qq, ss; 10. (25 copies), nn*; 11. a (Bu-Aer, CNO, CorndtMarCorps); 12. a, b; 13. a (l), (2), (4), (5), (7), (II), (12), (15), b (l), (4)-(7), c (3), (4’1, (6); 14. a, b*, g, y.

*,\pl)licablc atfdressces.

18 Ott 45/732/l.

U.S. GOVERNMENT PRINTING OFFICE: 1945

RESTRICTED

Documents

OP 1548 Bomb Fuze