ALLIED BOMBS AND FUZES

DESIGNATION

PRINCIPAL MARKING

D.A. No. 33 Mark I

D.A. No. 33

CLASSIFICATION

Mechanical Nose Impact

Mark I

TYPE OF MISSILE

Fragmentation and General Purpose

MARKINGS AND

BOMBS USED IN:

SUBSIDIARY

This fuze is use in the bombs, Parachute,

MARKINGS:

H.E. 20 lb. Fragmentation and 40 lb. G.P.

DATA

D.A. No. 33 Mark I

1

COLOR

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OVERALL LENGTH

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OVERALL WIDTH

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MATERIAL OF CONSTRUCTION

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DESCRIPTION

This fuze is similar in principal the the No. 29 Mark I Fuze except that, in place of a shear wire, a shear washer and striker sleeve are embodied within the body. A spring safety clip retains a modified safety cap in position in place of the safety fork. The locking device for securing the fuze to the bomb is also identical with the No. 29 Mark I Fuze. A safety pin, carrying an instruction tag, passes through holes in the projections attached to the safety clip. Holes are also pro-vided for the insertion of the split pin at the end of the arming link of the parachute bomb.

Safety Devices: - During transit, the pressure plate is held in position by the spring safety clip. The clip is held toge- ther by a safety pin fitted through the two ends. After be- ing placed in the carrier, the arming link pin from the para- chute is put in place and the safety pin is then removed. A shear washer is also employed to prevent the striker from being moved.

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POSITION AND METHOD OF FIXING IN BOMB

Screwed into the exploder adapter tube at the nose of the bomb and secured by a spring locking collar.

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FUZES LIKELY TO BE FOUND WITH

None.

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COMPONETNS OF EXPLOSIVE TRAIN

Has individual exploder tube at nose containing the detona-tor and exploder charge.

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ARMING TIME

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OPERATION

On release from the carrier, the arming link pin is pulled clear by the action of the parachute. With the release of the safety spring clip, the safety cap is forced off by action of the spring and the fuze is armed. On impact, the pres-sure plate shears the washer and the striker moves inwards and pierces the primer. When used on bombs without para-chutes, 20 lb. "F" and 40 lb. "G.P.", safety pin and spring clip are removed as safety cap is held by walls of bom con-tainer.

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REMARKS

1. This fuze has no vanes. There is a spring operated cap which fits around the pressure plate.

2. This fuze may also act as a nose plug during transit.