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Smoke 500-lb. Mk II (Service) |
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Filler and Weight | ||
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| NA, | |||
| Body and Overall Weight | |||
| NA, NA | |||
| Color | |||
| Dark green with red band around lower part of body | |||
| Type of Round, DODIC | |||
| Smoke, NA |
| Description: |
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| Tile bomb Consists of a cylindrical bomb body made of thin sheet steel. with a nose plate welded to one end of the body. Three catch brackets, spaced 120" apart, are welded to the nose plate, and a nose fairing is secured to the catch brackets by spring clips. Immediately beneath the nose plate is located it loading plate. An exploder pocket is welded to the nose plate and contains an ejection charge. A nose plug is screwed into the exploder pocket. An igniter tube with four series of perfora¬tions extends down the center axis of the bomb and contains a celluloid tube holding a primed cambric tale. The igniter tube is held i:\ place by the igniter-tube holder, located in the center of the tail plate. The remainder of the bomb body is filled with three hanks of smoke gen¬erators, each bank consisting of eight wedge-shaped units fitted with drag plates. A tail plate, to which is welded the fuze adapter, is secured to the inside of the after end of the bomb body by six brass rivets. A tail locating ring is fitted to the inside of the tail plate. |
| Use: |
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| There are at present in service use only four smoke bombs, exclusive of those bombs containing smoke spotting charges. These are the 4-, 1O0-, 120-, and 500-lb. smoke bombs. The bombs are used to lay smoke screens to conceal troop movements. |
| Functioning: |
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| When the bomb is released from the-aircraft, the fuze is armed. At a predetermined height, the fuze functions and the flash from the fuze magazine ignites the contents of the igniter tube. The perforations in the igniter tube allow the burning celluloid and primed cambric to initiate the smoke generators and eventually the ejection charge. The pressure of the gases generated by the ignition of the ejection charge bears against the loading plate and forces the whole inner assembly against the tail plate, which shears the six brass rivets holding it to the bomb casing. The tail plate and at¬tached tail unit are then thrown clear of the bomb, and the bomb contents are ejected through the tail. |
| Munition Components: |
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| Data Source: |
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| OP 1665 Explosive Ordnance British |
| Munitions Tech Data Sheet: |
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