DEVICE FOR PARACHUTE DEPLOYMENT Russian patent published in 1995 - IPC

FIELD: parachute technique. SUBSTANCE: device has aneroid mechanism 1, clockwork mechanism 2, interlocking levers 3 arranged in housing 4, lock 5, extraction mechanism 6 secured underneath of housing 4 which has rope 7 in protective casing 8 connected to two-cone lock 9 of parachute. Mounted on lateral surface of housing 4 is locking mechanism 10 which has protective casing with split collet 12 at free end, rod with piston and easily detachable lock made for example in form of tip with mating chamber located in taper tip 17 of line 18. In loading taper tip 17 with line 18 to critical force P_cr, tabs of collet 12 open and taper tip 17 gets released, thus carrying the rod and piston. Piston is free to move inside protective casing till it rests against collet 12. After locking the piston on collet 12, lock is released. Mating part of lock located in taper tip 17 moves with parachute line 18 and spherical tip of rod remains on device. When rod is released from flat of balance and stop of clockwork mechanism 2, device is placed in operation. Motion from clockwork mechanism 2 is transmitted via gear train to interlocking levers 3 which open lock 5 of extraction mechanism 6 or stop clockwork mechanism 2 when height exceeds that set on scale. As soon as preset height has been attained, interlocking levers 3 are released due to compression of aneroid mechanism 1 and clockwork mechanism 2 continues its operation for 0.8 to 1.2 s and places lock 5 in operation, thus releasing the piston. Under action of compressed springs, piston is set in motion, pulls rope 7 in protective casing 8 and opens two-cone lock 9 of parachute. EFFECT: enhanced reliability due to enhanced tightness of mechanism placing device in operation and maintaining stable operation of device. 2 dwg