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B-1 (B): FUZE
The B-1 (B) is a delay tail-fuze, typically fitted to Japanese WWII era air-dropped bombs. The fuze is armed by the removal of an arming wire upon release from the plane and 11 rotations of an arming vane. On impact, a firing pin moves against a spring and pierces an igniter module. The resultant flash ignites a delay train, which burns until it reaches an initiation relay; which in turn sets of the booster. Delay time is 15 to 16 seconds. The...
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