Helicopter motion detection during inertial reference system leveling
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United States of America Patent
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Jan 30, 2018
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app pub date -
Jan 6, 2015
filing date -
Jan 6, 2015
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Abstract
A method to level an inertial reference system of a helicopter with reference to the local vertical frame is provided. The method includes powering up the helicopter; outputting sensor data from at least one gyroscope and at least one accelerometer to a mode-selecting processor; executing a fast Fourier transform algorithm on the sensor data at the mode-selecting processor; and selecting one of a plurality of operation modes of the helicopter as a current-operation mode based on the execution of the fast Fourier transform algorithm.
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