Rotor blade swashplate-axis rotation and gyroscopic moments compensator
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United States of America Patent
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Sep 1, 1998
Issued Date -
N/A
app pub date -
Apr 29, 1997
filing date -
Dec 6, 1995
priority date (Note) -
Expired
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Abstract
An apparatus for compensating for spatial phase angle phase errors in the flapping angle oscillations of a rotor blade is disclosed. The apparatus receives a measured aircraft roll and a measured aircraft pitch. Gyroscopic moments resulting from these measured rolls and pitches are determined, and compensating gyroscopic moments are then generated and summed with commanded pitch and roll accelerations. Flapping angle phase lags of the rotor blade swashplate are added to the summed signals to cancel any flapping angle phase leads, caused by changes in aircraft or rotor blade speed caused by installation configurations of the rotor blade swashplate.
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