Aircraft landing gear actuator

Details Aircraft landing gear actuator Aircraft landing gear actuator

2008-07-16

2011-12-06

Swiatek, Rob (Department: 3643)

Aeronautics and astronautics

Landing gear

Retractable

C244S1020SL

Reexamination Certificate

active

08070094

ABSTRACT:
A landing gear system that includes a landing gear strut rotatable between stowed and deployed positions. An actuator is connected to the landing gear strut, and includes main and emergency drives housed within a common body and operable independently from one another. A controller in communication with the actuator is configured to command the actuator between the stowed and deployed positions in response to an input. The controller commands the main drive during a normal operating condition and commands the emergency drive in a failure condition of the main drive. The actuator includes a body supporting emergency and main leadscrews arranged coaxially with one another. Main and emergency motors respectively are coupled to the main and emergency leadscrews. An output rod is supported by and extends from the body. The output rod is threadingly coupled to and is coaxial with the main leadscrew and configured to move axially in response to rotation of the main leadscrew. A brake selectively enables and disables the emergency drive.

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International Search Report for PCT Application No. PCT/US2009/050796, Mar. 10, 2010.

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