The rapidly expanding gases, created by impulse cartridges, actuate ejector pistons and release the missile from the launcher.
2.
Ejection utilizes an impulse cartridge, a pyrotechnic device which provides jettison capability by igniting and supplying an ejection force to safely propel a store away from the rack and aircraft . Some racks contain an auxiliary cartridge in the event that the primary cartridges fail to fire.
3.
Schematic view of a MJU-7A / B decoy flare cartridge : anodised aluminium cartridge ( 1 ); an electrical impulse cartridge ( 2 ), providing both expulsion and, in some cases, direct ignition of the payload; a pusher plate acting as a safe & arm device ( 3 ); the payload ( 4 ) with first fire layer ( 5 ); the wrapping self-adhesive polyester reinforced aluminum foil ( 6 ); and a front washer ( 7 ).
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