Flight lock actuator with dual energy sources
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United States of America Patent
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-
Dec 4, 2007
Grant Date -
Jun 29, 2006
app pub date -
Jan 20, 2006
filing date -
Nov 13, 2001
priority date (Note) -
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Abstract
A flight-lock actuator that can be powered by two sources of stored energy when aircraft power has been switched off. A mechanical energy storage device and an electrical energy storage device provide a fully redundant energy storage system that stores sufficient energy to complete the actuator's extension stroke when aircraft power is removed. The actuator has a motor control system that limits the stroke velocity for both the extension and retraction strokes, including a damper feature capable of effectively braking the actuator during the back-driven extension stroke.
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