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| ITALIAN AND FRENCH EXPLOSIVE ORDNANCE |
| Chapter 2 |
| ITALIAN BOMB FUZES |
| Type U - Mechanical Impact Nose Fuze |
| Data |
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Bomb used in |
2-kg
Anti-Personnel Type F and Mtr. 1-kg and 2-kg Incendiary |
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Fuzes used with |
Alone |
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Over-all length |
1.8 in (without booster) 3.8 in. (with booster) |
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Over-all length of vanes |
1.8 in. |
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Width of fuze body |
1.0 in. |
| Description |
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The fuze is threaded at the base to screw into the nose-fuze pocket of the bomb. The firing assembly consists of a striker, creep spring, and primer. Two steel balls set in the wall of the striker and resting in the wall of the striker sleeve by force of the arming rod, immobilize the striker. The arming spindle is attached to the vanes by a small screw which appears externally in the axis of the vanes. A safety pin prevents the vanes from rotating. |
| Operation |
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The safety pin is whitdraw, which allows the vanes to rotate when the bomb is released from the plane. The rotation withdraws the arming spindle from the striker. After the arming spindle has withdrawn a sufficient distance, the ball fall into the channel and re-lease the striker. This action arms the fuze. Upon impact, the striker overcomes the creep spring and contact the primer detonator. |
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Figure 50 |
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