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| BRITISH EXPLOSIVE ORDNANCE |
| Part 1 - Chapter 2 |
| Fragmentation Bombs |
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F. 20-lb., Parachute, Mks I and II (Obsolescent), and Mk III (Service) |
| Data |
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Fuzing |
Nose Pistol No. 33 |
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Color markings |
Dark green over-all; ½-in. red band around body ½ in. from nose; 1-in. light green band 4 in. from nose |
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Over-all length |
21.8 in. |
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Body length |
11.9 in. |
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Body diameter |
3.95 in. |
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Wall thickness |
0.35 in. |
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Tail length |
10 in. |
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Tail width |
3.9 in. |
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Total weight |
20 lb. (approx.) |
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Charge/weight ration |
15% |
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Body Construction: This bomb has a stream-lined, one-piece, cast-steel body, with the nose end open to take an exploder container.The rear end is reduced to form a spi-got for taking the tail adapter. The boss on the spigot is tapped and threaded to receive the tail adapter securing bolt. The exploder container is cemented in position and locked by a locking screw. |
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Tail Construction: The parachute tail unit consists of a tail tube with a cylindrical strut connected to its rear portion by four fins. The parachute, which is housed in a fa-bric cylinder, is contained in tail tube. A loose-fitting metal cover in the after end of the tube is attached to the fabric cylinder. The parachute cords are connected to a wire rope secured to an eyebolt which connects the tail adapter and the body. The tail adap-ter is secured in the front end of the tail tube by four screws. When dropped, the metal end cover in the tube is blown off by the air slip, and acts as a pilot parachute to pull the main parachute out of the tube. |
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Suspension |
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Mk I – Carried 12 in Small Bomb Container, or on Light Series bomb carrier if fitted with a suspension lug. |
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Mk II – Carried 12 in Small Bomb Container, or on Light Series bomb carrier if fitted with suspension lug or band. |
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Mk III – Suspension lug welded in bomb body at center of gravitiy for carrying on Light Series bomb carrier; can be carried 12 in Small Bomb Container. |
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Explosive Components |
| Detonators – (See Part 2, chap. 4, Detonators.) |
| Exploders – C.E. and TNT pellets (C.E. only being used now). |
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Filling – 3 lb. (approx.) RDX/TNT; Mk I and Mk II, 3.3 lb. TNT. |
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Remarks: The Small Bomb Container, 160 lb. contains eight of these bombs. The Small Bomb Container, 250 lb., contains 12 of these bombs. These bombs are no longer being maufactured. However, they may be encountered in the field. They are being re-placed by the 8-lb. fragmentation bombs. |
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Figure 4 – F. 20-lb. Bomb Mk III (Parachute) |
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