Positioning and control system for fan thrust reverser cowls in

Details Positioning and control system for fan thrust reverser cowls in Positioning and control system for fan thrust reverser cowls in

1980-09-30

1983-07-05

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Reaction motor discharge nozzle

With means controlling amount, shape or direction of...

602262, F02K 160

Patent

active

043914098

ABSTRACT:
A positioning and control system for fan thrust reverser cowls in a high bypass turbofan jet engine includes independent hydraulic actuator assemblies for selectively moving the cowls between a forward stowed position and a rearward deployed position. Hydraulic fluid is metered to the actuator assembly through matched, two-way, pressure compensated flow regulator valves associated respectively with each actuator assembly. The flow regulator valves are preferably interposed in the hydraulic lines of the rod end of the actuators so as to regulate the rate of translation of the thrust reverser cowls during both deployment and retraction. The use of matched flow regulator valves in parallel results in synchronous translation as well as substantially identical full stroke displacements of the reverser cowls during both deployment and retraction. Additionally, the use of matched flow regulator valves in parallel permits independent actuation of the thrust reverser cowl with lighter and more efficient actuator assemblies.

REFERENCES:
patent: 3033219 (1962-05-01), Erle
patent: 4030291 (1977-06-01), Sargisson
patent: 4191094 (1980-03-01), Flippo

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