Snubbing apparatus for an aircraft control surface actuator

Details Snubbing apparatus for an aircraft control surface actuator Snubbing apparatus for an aircraft control surface actuator

1982-09-24

1985-02-05

Barefoot, Galen

Aeronautics and astronautics

Aircraft control

74526, 244213, B64C 1900

Patent

active

044974612

ABSTRACT:
A snubber (12) includes a fixed member (14) and a movable member (16). A variable volume chamber (20) is defined between these two members (14, 16). The chamber (20) includes an orifice (22). A body of extrusible material (26) substantially fills the chamber (20). A rotary actuator (6) carries a lug (28) that contacts the movable member (16) when the actuator (6) moves beyond a predetermined position. This contact pushes the movable member (16) against the extrusible material (26) to decrease the volume of the chamber (20) and to cause the extrusible material (26) to be extruded through the orifice (22). This stops the rotation of the actuator (6) and absorbs its kinetic energy. The snubber (12) is supported by a frame member (10). Preferably, the frame member (10) has a cavity (40) into which material extruded through the orifice (22) is received.

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