Repeatable release holdback bar

Details Repeatable release holdback bar Repeatable release holdback bar

1977-09-15

1978-07-18

Kelmachter, Barry L.

Aeronautics and astronautics

Aircraft propulsion

Launching

403 31, B64F 106, B64F 112

Patent

active

041010990

ABSTRACT:
A holdback bar for restraining an aircraft temporarily prior to catapult isted launch which utilizes a ball and piston unloader valve to insure rapid, positive release of a pressurized hydraulic fluid. Compensator chambers each having a resilient piston cushion against release shock caused by rapid release of stored strain energy in the hydraulic fluid and provide hydraulic fluid make-up to allow for expansion and contraction and slight leakage losses.

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patent: 3738693 (1973-06-01), Loustalet
patent: 3813065 (1974-05-01), Hallesy et al.
patent: 3945235 (1976-03-01), Oxlade et al.

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