Aircraft stabilizer actuator
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United States of America Patent
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Feb 24, 2015
Issued Date -
N/A
app pub date -
Sep 1, 2010
filing date -
Sep 1, 2009
priority date (Note) -
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Abstract
An actuator for actuating movement of a control surface relative to a structure can include a high-efficiency assembly and a low-efficiency assembly. The high-efficiency assembly can be connectable between a control surface and a structure for providing a first load transfer assembly and the assembly can have minimum backlash. The low-efficiency assembly is connectable between the control surface and the structure for providing a second load transfer assembly. The low-efficiency or irreversible assembly can be disposed in parallel relationship to the high-efficiency assembly and can have a higher backlash than the low-efficiency assembly. The low-efficiency assembly can be unloaded in normal operation. The actuator also can include a coupler for that can have a closed state in which both load transfer assemblies are synchronously driven by the drive mechanism, and an open state in which the drive mechanism is decoupled from the low-efficiency assembly and the low-efficiency assembly can inhibit movement of the control surface.
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