Ground strike protection function for aircraft autopilot
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United States of America Patent
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-
May 11, 1999
Grant Date -
N/A
app pub date -
Jul 18, 1996
filing date -
Jul 18, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for use with an aircraft autopilot to prevent an aircraft part from striking the ground during near ground maneuvers by employing a protection circuit between the outer loop and the inner loop of the control chain between the autopilot and the control surface, the prevention circuit producing an output signal when there is a possibility of ground strike which output signal operates to reduce the control surface command signal from the inner loop to the control surface and thus be rapidly responsive to aircraft attitude changes that could produce ground strike.
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