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| BRITISH EXPLOSIVE ORDNANCE |
| Part 1 - Chapter 6 |
| Semi-Armor-Piercing and Armor-Piercing Bombs |
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A.P. 2,000-lb., Mks I, II, III and IV (Service) |
| Data |
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Fuzing |
Mks I, II, and III, Tail Fuze No. 37; Mk IV, Tail Pistol No. 30 |
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Color markings |
Dark green over-all; with light green nose, three ½-in. bands, white, red, and white respectively, painted 4 in. to 5½ in. from tip of nose |
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Tail No. |
Mk I, No. 1 Mk I; Mks II and III, No. 10 Mk I; Mk IV, No. 47 Mk I |
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Over-all length |
113.0 in. |
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Body length |
80.0 in. |
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Body diameter |
13.5 in. |
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Wall thickness |
2.4 in. (approx.) |
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Tail length |
35.5 in. |
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Tail width |
13.5 in. |
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Total weight |
1,934 lb. |
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Charge/weight ratio |
9% |
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Body Construction: The Bomb Mk I has a forged steel body with a solid nose appro-ximately 1.9 ft. long and a slight taper from the maximum diameter to the tail. The base is threaded externally to take a tail adapter, and internally to take a base adapter, which receives the exploder container. The fuze is locked in position by a fuze securing ring. The Mks II and III are similar to the Mk I, except for the tail adapter, which has four equi-spaced holes threaded for attachment of the tail. The Mk IV is modified to take a Tail Pistol No. 30. |
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Tail Construction: The Tail No. 1 Mk I is of aluminum alloy, consisting of a cylindrical strut attached to the tail cone by four vanes. It fits over the tail adapter and is secured by six screws. The Tail No. 15 Mk I is similar to the No. 1 Mk I, but is made of steel. It has a strengthening ring two inches from the base, and is secured to the tail adapter by four wing bolts. The Tail No. 47 Mk I consists of a cylindrical strut secured to the tail cone by four fins which are riveted on. A reach rod extends through the tail cone, and is supported by a spider. |
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Suspension: The bomb is suspended from the plane by two suspension bands. |
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Explosive Components |
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Detonator – (See Part 2, chap. 4, Detonators.) |
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Exploders – C.E. issued in position in exploder container. |
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Filling – 166 lb. Shellite, with a composition pad in the forward end of the cavity, sea-led aft with washers and cement. Shellite is a very insensitive explosive consisting 70% picric and 30% dinitrophenol. |
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Figure 26 – A.P. 2,000-lb. Bomb |
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