Nozzle and flapper with squeeze film damping

Details Nozzle and flapper with squeeze film damping Nozzle and flapper with squeeze film damping

F - Mech Eng,Light,Heat,Weapons

15

B

137/96

F15B 5/00 (2006.01) F15C 3/14 (2006.01) F16F 9/34 (2006.01)

Patent

CA 1199553

NOZZLE AND FLAPPER WITH SQUEEZE FILM DAMPING Abstract of the Disclosure An electro-hydraulic control structure having a control input positioning a flapper relative to a nozzle to generate a control output pressure is provided with a squeeze film damper which utilizes the flapper, or an extension thereof, as the movable element of the squeeze film damper. Preferably the flapper is pivoted and forms h the nozzle exhaust passageway a tapered gap receiving a small portion of the nozzle flow which acts as the damping fluid. The majority of the nozzle flow passes through a hollow portion of the flapper located downstream of the nozzle.

434836

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