System and method for determining aircraft hard landing events from inertial and aircraft reference frame data
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United States of America Patent
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Sep 15, 2009
Grant Date -
Jan 11, 2007
app pub date -
Jun 12, 2006
filing date -
Jun 10, 2005
priority date (Note) -
In Force
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Abstract
This invention allows for the precise determination of an aircraft's landing conditions and whether an aircraft has experienced a hard landing that exceeds the allowable design loads of the aircraft's landing gear. The system comprises a computer that measures signals from an inertial measurement unit (IMU) at high data rates (e.g. 100 Hz) and also records signals from the aircraft avionics data bus. The computer compares the output from the inertial measurement unit's accelerometers against at least one predetermined threshold parameter to determine whether the aircraft's three dimensional landing deceleration is safely within the design allowances or other regulatory limitations, or whether the landing event needs further investigation.
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