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| BRITISH EXPLOSIVE ORDNANCE |
| Part 1 - Chapter 17 |
| Obsolete Bombs |
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I.B. 250-lb. Mks I and II (Obsolete) |
| Data |
| Fuzing | Nose Fuze No. 36 Mk II with Ejector Charge No. 2 Mk I |
| Color markings | Red over-all; two 2-in. black bands separated by a 2-in. bright red band near the nose |
| Tail No. | No. 1 Mk I |
| Over-all length | 61 in. (approx.) with-out fuze |
| Body length | 34.1 in. |
| Body diameter | 12 in. |
| Tail length | 27.2 in. |
| Tail width | 11.7 in. |
| Fuel weight | 68 lb. |
| Total weight | 193 lb. |
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Description: The bomb has a cylindrical body with a hemispherical nose and parallel sides. An ejector-charge container is screwed and cemented into the nose and takes the nose fuze. The tail consists of a tail tube cone and a cylindrical strut attached to the cone by four fins. The after end of the body is closed by a tail plate, which is lightly se-cured to the body. |
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Functioning: On impact, the fuze functions and ignites the gunpowder ejection char-ge, which in turn ignites the incendiary filling and ejects it with the tail and tail plate. |
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Suspension: The bomb is suspended by a single suspension lug. |
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Filling: The Bomb Mk I is filled with a phosphorus-rubber-benzene mixture. The Bomb Mk II is filled with a "sticky inflammable liquid." The ejector charge consists of black pow-der. |
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Remarks: This bomb was intended primarily for attacking forested areas, and can be dropped from heights up to 3,000 feet. |
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