30-3

Nose

Creep & cen-
trifugal force

Instantaneous

Used in 5.0" spin-stabilized rockets. This fuze is the Mk 30-3 Point Detonating Projectile Fuze.

31

Base

Creep and cen-trifugal force

Instantaneous

Used in 5.0" spin-stabilized rockets. This fuze is the Mk 31 Base Detonating Projectile Fuze.

100

Nose

Creep and cen-trifugal force

Instantaneous or .05 sec. delay

Used in spin-stabilized rockets. This fuze is the Mk 29 Point Detonating Projectile Fuze, with the .05 sec. delay plunger assembly from the Army pro-jectile fuze, M48A2.

131 & Mods

Nose

Water travel

Instantaneous
Impact

Used in 7.2" Rocket Ammunition Shipboard. Fuze being replaced by the Mk 156.

134

Base

15 sec. delay

Used in 3.5" Rocket Flare & Window Rocket. Fuze consists of a .32 cal blank cartridge and a lenght of safety fuse.

135

Nose

Hydrostatic Pressure

Instantaneous Impact

Obsolete; used in 7.2" Rocket Ammunition Shipboard.

136 & Mods

Nose

Water Travel

Instantaneous Impact

Similar to Mk 131 with the ad-dition of a collar shear wire. Used in 7.2" Projector Charge Ammunition. Fuze is being re-placed by the Mk 158.

137
137-1
137-2

Nose

Air

Instantaneous Impact

Used in 4.5" Barrage H.E. Rock-et, 4.5" Barrage F.S. Rocket (Mk 5 head), and in 7.2" Demo-lition Rocket (Mk 9 head). The Mk 137-1 differs in that it has ten arming vanes instead of eight and also has a split spa-cer sleeve. The Mk 137-2 is similar to the Mk 154-3.

139

Nose

Spring

Instantaneous Impact

Obseolete; used in 7.2" Retro-bomb.

140

Nose

Hydrostatic Pressure

Instantaneous Impact

Orders issued that fuze not to be used and it will be reclled. This fuze was issued to replace the Mk 131 and Mk 136 in 7.2" Rocket Ammunition Shipboard and the 7.2" Projector Charge Ammunition. Fuze can be used by blimps in 7.2" heads without the motor and dropped as bombs.

141

Nose

Air

Instantaneous Impat. Water discriminating

Used in 7.2" Demolition Rocket (Mk 5 head) to replace Mk 152. Two Mk 1 auxiliary boosters re-quried. Fuze is a modified AN-M110A1 bomb fuze.

145-0
145-1

Nose

Air

.02 sec. delay

Used in 4.5" Barrage Rocket. Fuze is similar to Mk 137 with a .02 sec. delay in detonator.