The mechanism relies solely on booster thrust termination and {TAIL ~ the ensuing cessation} of acceleration forces to release {HEAD ~ the drag brakes}, thus requiring no additional electronic or pyrotechnic actuators or timers 
The mechanism relies solely on booster thrust termination and { TAIL ~ the ensuing cessation } of acceleration forces to release { HEAD ~ the drag brakes } , thus requiring no additional electronic or pyrotechnic actuators or timers
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