CENTRIPETAL ACCELERATION DETERMINATION, CENTRIPETAL ACCELERATION BASED VELOCITY TRACKING SYSTEM AND METHODS
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United States of America Patent
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Issued Date -
Jul 28, 2016
app pub date -
Apr 4, 2016
filing date -
Apr 4, 2016
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Abstract
The flight of an aircraft is characterized in terms of Earth-based reference system data for a first position and a second position of the aircraft that are separated by a time increment. A centripetal acceleration of the aircraft is determined based on the Earth-based reference system data for the positions in conjunction with the time increment. A rate of rotation is established corresponding to the time increment in an aircraft-based reference system. Aircraft airspeed is determined based on the centripetal acceleration and the rate of rotation. A turn can be detected as characterized by a change in track angle from a prior GPS packet compared to a new packet. Aircraft turns can be detected based on a change in track angle in GPS packets. Compensation can be applied to a gyro based on centripetal acceleration such that the gyro more accurately responds to the Earth gravity axis.
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