Abstract
Parachute opening shock calculations with experimentally established areaand velocity-time functions are shown which, in combination with the momentum and continuity equations, yield force-time histories that satisfactorily agree in shape and force level with measured force-time diagrams. Two conjugate functions were found which approach uniqueness and provide satisfactory force-time histories of solid flat circular parachutes of 3-100 ft diameter, with loads of 0.5-5400 Ib at snatch velocities between 50 and 360 fps.
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