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| U.S.N.B.D. - BRITISH BOMBS AND FUZES; PYROTECHNICS; DETONATORS |
| PRACTICE BOMBS |
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BRITISH BOMB |
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FUZING |
Simple striker arrangement |
11.5 LB. PRACTICE |
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with detonator-burster | |
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No. 28 Mk I. | |
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COLOR & MARKINGS |
White overall, with two ½" | |
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green bands ½" apart |
Mk I - Smoke |
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around tail cone. |
Mk I - Flash |
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OVERALL LENGTH |
18 in. |
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MAX. BODY DIAMETER |
3 in. |
(Service) |
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TAIL WIDTH |
3 in. |
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TOTAL WEIGHT |
11.5 lbs. |
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BODY CONSTRUCTION: |
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Bomb consists of a nose casting, fitted with a striker assembly and a tail cone which constitutes a container for the filling and is fitted with a central tube for a detonator burster. Nose casting made of iron, internally threaded at rear to receive spigot portion of a central plug which closes the forward end of the tail cone. Interior of nose filled with lead, having a clearance hole for the striker rod. Striker secured by a cotter pin (removed when loaded), a safety pin spring-loaded out, and a shear wire through the guide bush. |
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TAIL CONSTRUCTION: |
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Sheet metal tail cone, constituting the container for the filling, is closed at the rear by a conical steel plug and at the forward end by a central plug which screws into the rear of the nose casting. A tapped hole is provided in the central plug for filling pur-poses. Secured to the tail plug is a tail tube having four fins which carry a cylindrical strut. Tail tube closed at rear by a cap. |
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SUSPENSION: |
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Single eyebolt which threads into bomb case. |
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EXPLOSIVE COMPONENTS: |
Detonator burster: |
10 grains fulminate of mercury and 7 C.E. pellets. |
| Smoke Filling, Mk I: |
1 lb. Titanium Tetrachloride, which produces white smoke when detona-tor-burster breaks open tail cone and exposes it to the atmosphere. |
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Smoke Filling, Mk III: |
1 lb. mixture of gunpowder and mag-nesium turnings, produces a brilliant white flash on impact. |
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REMARKS: |
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(1) Smoke is used as filling for daytime use; flash mixture at night. |
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(2) Mk II of these bombs was made in the U.S. of bakelite, but now scrapped. |
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