|
|
| U.S.N.B.D. - BRITISH BOMBS AND FUZES; PYROTECHNICS; DETONATORS |
| FLARES & PHOTOFLASH BOMBS |
|
|
|
|
|
|
BRITISH BOMB |
|
|
FUZING |
No. 867 Mk I or |
1000 LB. T.I. |
|
|
No. 896 Mk I | |
|
COLOR & MARKINGS |
Black overall with red band | |
|
|
around nose end, and 2" | |
|
|
ring around nose to indi- |
Mk I |
|
|
cate color of contens; "X" |
|
|
|
stencilled in red when ex- |
(Service) |
|
|
plosive candles are used. |
|
|
TAIL NO. |
No. 57 Mk I |
|
|
OVERALL LENGTH |
73.6" |
|
|
MAX. BODY DIAMETER |
17" |
|
|
TAIL LENGTH |
20" | |
|
TAIL WIDTH |
17.4" |
|
|
BODY LENGTH |
53.6" |
|
DESCRIPTION: |
|
The bomb consists of a cylindrical body with a dome-shaped nose cap welded on. The after body of the bomb consists of a sheet steel body cone. This after cone sec-tion is welded to a steel closing plate which is press-fitted into the after end of the central cylinder. A small notch is cut out at one point on the circumference of the clo-sure plate. A projection from the end of the central body engages in this notch, pro-perly positioning the closure plate and tail assembly. A steel tube, running axially through the bomb, is welded to a burster container at the nose end, and passes through a central hole in the closure plate at the tail end. A steel plug is threaded to this tube aft of the closure plate, holding the closure plate and tail assembly tight in the bomb body |
|
Three banks of flares are placed in the central body cylinder. The ignition ends of the flares bear against one of two equi-spaced primed cambric discs. A primed cambric tube is inserted in the central tube, and holes in the central tube lead out to each of the primed cambric discs. |
|
An ejection plate is located just forward of the first bank of flares and just aft of the hollow nose portion of the bomb. This ejection plate is welded to the central tube. In the nose is a short burster container with a flash hole in its lower end and additional flash holes located cirumferentially around its upper portion. These latter holes lead into the empty cavity formed by the nose portion of the bomb and the ejection plate. |
|
FILLING: |
|
A number of combinations of candles may be incorporated in this bomb. The follow-ing table indicates the combinations most commonly used: |
| No. & Type of Candles |
Color | Remarks | |
| 186 Non-delay candles | Red, green, or | Burning time: 3 min. | |
|
|
14 Explosive candles |
yellow |
|
| 8 Non-delay candles | Red, green, or | Total burning time: | |
| 128 Delay candles | yellow | 35 min. | |
|
|
9 Explosive candles |
|
|
| 31 Non-delay candles | Red, green or | Total burning time: | |
| 155 Delay candles | yellow | 12 min. | |
|
|
14 Explosive candles |
|
|
|
FUNCTIONING: |
|
When the aerial burst nose fuze functions, the fuze magazine initiates the gunpow-der in the burster container. The explosion of the burster passes though the lead out flash holes in the top part of the burster container, putting pressure against the eject-ion plate. Simultaneously the explosion of the burster passes through the flash hole in the bottom of the burster container, ignites the primed cambric tube, which in turn ignites the primed cambric discs, initiating the flares. Pressure of the explosion gases behind the ejection plate, assisted by wind drag on the tail, forces the whole internal assembly out of the tail of the central body cylinder, allowing the flares to be disper-sed. |
|
REMARKS: |
|
1. Additional information will be released when available. |
|
2. Dual suspension lugs are provided for suspension in American planes. |
|
|
 |
