Nose Fuze No. 35Nose Fuze No. 38, No. 38 ND und No. 864
U.S.N.B.D. - BRITISH BOMBS AND FUZES; PYROTECHNICS; DETONATORS
BRITISH FUZES & PISTOLS

 

 

 

 

 

BRITISH NOSE FUZE

BOMBS USED IN:

I.B. 250 lb. Mks I & II

NO. 36

FUNCTIONING

Impact; instantaneous or

 

short delay.

Mks. I & II

ARMED CONDITION

Safety pin and safety clip

NO. 36 N.D.

 

removed; vane hup scre-

 

wed down.

Mk. II

MAX. BODY DIAMETER

1.8"

 

OVERALL LENGTH

4.8" (Unarmed)

(Service)

COLOR

Brass

 

 

 

 

 

   

 

   

 

   

DESCRIPTION:

The fuze consists of a brass body housing an inertia pellet and a creep spring. Into the upper portion of the fuze body is threaded a striker plug, which is held in place by a set screw through the fuze body. The striker plug is threaded internally to receive a threaded striker, which is firmly fixed to the inside of the arming vane hub. The creep spring separates the inertia pellet from the base of the striker plug. A detonator is loca-ted in the top of the inertia pellet, with a long firing channel bored in the pellet beneath the detonator.

Into the base of the fuze is screwed a delay holder containing two powder pellets separated by a distance tube and a delay pellet. Immediately below the delay holder is located an initiating charge of black powder, and the fuze base is then closed with a base plug.

Safety during transit is provided by a safety pin, inserted in the side of the fuze body, which engages the top of the inertia pellet, preventing it from moving upward against its spring. In addition, a safety clip fits around the vane hub, and a stud in the clip passes through the vane hub into a locating hole in the striker plug, preventing the vane hub from rotating.

The fuze body is threaded externally for insertion in the bomb, and a securing ring is provided to lock the fuze in position.

OPERATION:

The safety pin is removed from the fuze when the bomb is loaded aboard the plane, and a plug, normally located in a blind hole in the fuze body, is placed in the safety pin hole to seal the fuze. The safety clip is pulled away when the bomb is dropped, and the vanes are free to rotate the vane hub, screwing the striker downwards. On impact the inertia pellet moves against the creep spring, bringing the detonator into contact with the striker. The explosion of the detonator initiates the powder pellet, delay pellet, and second powder pellet, located in the delay holder. The second powder pellet fires the initiating gunpowder charge, which then initiates the No. 2 Mk. I ejection charge in the bomb.

REMARKS:

1. No. 36 Mk. I: This fuze is identical to the No. 36 Mk. II (illustrated), except that the fuze body above the external threading is greatly reduced in diameter.

2. No. 36 N.D. Mk. II: This fuze is identical to the No. 36 Mk. II (illustrated), except that the powder pellet and delay pellet in the delay holder are replaced by a quantity of loose gunpowder, giving the fuze instantaneous action.

Nose Fuze No. 35Nose Fuze No. 38, No. 38 ND und No. 864