Two-brake torque limiting device
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United States of America Patent
Stats
-
Dec 9, 2003
Grant Date -
Mar 14, 2002
app pub date -
Aug 31, 2001
filing date -
Sep 8, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus of the invention enables a two-brake torque limiting device to fix the position of one or more flaps and/or slats on an airplane wing when unplanned or abnormal conditions exist. The two-brake torque limiting device may include a trigger brake, a lock down brake, and a speed-increasing device. The trigger brake may use an electromagnetic brake to apply a braking force to the lock down section. The braking force transferred to the lock down section from the trigger section may be transferred through a speed-increasing device. The speed-increasing device allows for the use of a small and a lightweight electromagnetic brake. The invention also provides a method for reducing asymmetry in the wings of an aircraft using an asymmetry detection device, using a trigger brake, using a speed-increasing gear, and using a lock down brake.
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