ARRESTOR HOOK UP-LOCK Russian patent published in 1996 - IPC

FIELD: aeronautical engineering; devices for deceleration of flying vehicle at landing. SUBSTANCE: lock has a housing with swivel jaw, spring-loaded latch, hydraulic cylinder whose rod is engageable with latch connected with jaw by means of spring. Thrust surfaces of jaw and its additional thrust member are engageable with jaw stops and roller of swivel bell crank, respectively. Rod of hydraulic cylinder is rigidly connected with adjustable rod engageable with roller of bell-crank. When in flight, hook is retracted and lock is closed. In extending the hook, pressure is fed to hydraulic cylinder which moves the latch by means of rod. Jaw is released and takes extreme open position I under the action of hook and spring; open position is limited by stop. In such position of the jaw, hook may move through an angle exceeding angle of retracted position III under action of external force at landing of flying vehicle. EFFECT: higher reliability. 2 dwg