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| BRITISH EXPLOSIVE ORDNANCE |
| Part 2 - Chapter 3 |
| Fuzes |
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Nose Fuzes No. 38 Mks I and II, No. 38 N.D. Mks II, and No. 864 (Service) |
| Data |
| Bombs used in | No. 38 and No. 38 N.D. – L.C. 30-lb. Mks I and II, and I.B. 30-lb. Mks I and II; No. 864 – Smoke 120-lb. |
| Action | No. 38, 0.5 sec. delay; No. 38 N.D., instantaneous; No. 864, 2.5 sec. delay |
| Armed condition | When the striker is screwed down |
| Fuzed used with | None |
| Body diameter | 2.25 in. |
| Over-all length | 5.5 in. (striker up) |
| Color | Brass |
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Description: The Fuze No. 38 Mk I consists of a cap, body, and base piece. In the cap is screwed the needle striker, which is locked by a lock nut. Below this is a ferrule whose tabs support a creep spring, which holds down an inertia pellet containing the de-tonator. A flash channel below the detonator in the inertia pellet leads to the delay ele-ment and the magazine. |
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Operation: When the bomb is put in the plane, the lock nut is loosened, the striker is screwed down, and the lock nut is then retightened. The fuze is now armed. Upon im-pact, the inertia pellet overcomes the creep spring and carries the detonator against the striker. The flash ignites the delay element, which in turn fires the magazine. |
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Remarks: The Fuze No. 38 Mk II differs from the Mk I in that it does not have the strengthening collar to meet conditions of oblique impact. This is also true of the Mk II N.D. The No. 38 N.D. Mk II has gunpowder in place of the delay element. The Fuze No. 864 Mk I differs from the No. 38 by having a smaller magazine. |
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Figure 153 - Nose Fuze No. 38 Mk I |
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