Accession Number : ADD005406

Title :   Strain Actuated Hydraulic Holdback Bar.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Hickle,William H

Report Date : 18 Jul 1978

Pagination or Media Count : 6

Abstract : A holdback bar for temporarily restraining an aircraft against the combined forces of engine thrust and catapult force prior to a catapult assisted launch of the aircraft which utilizes strain of a mechanical component to measure the level of combined forces. Housing stretch beyond a pre-determined amount actuates a floating trigger rod to lift a valve from its seat and permit escape of hydraulic fluid from a pressure chamber. The holdback bar includes a compensator for absorbing fluid volume changes caused by thermal expansion or contraction of the hydraulic fluid, and a rupture disk for limiting the pressure obtainable within the hydraulic fluid pressure chamber. (Author)

Descriptors :   *Patents, *Restraint, Aircraft, Hydraulic equipment

Subject Categories : Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE