Gas turbine engine variable area fan nozzle control
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United States of America Patent
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Nov 10, 2020
Grant Date -
Jan 3, 2019
app pub date -
Jun 24, 2018
filing date -
Jan 31, 2012
priority date (Note) -
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Abstract
A method of managing a gas turbine engine includes the steps of detecting an airspeed and detecting a fan speed. A parameter relationship is referenced related to a desired variable area fan nozzle position based upon at least airspeed and fan speed. The detected airspeed and detected fan speed is compared to the parameter relationship to determine a target variable area fan nozzle position. An actual variable area fan nozzle position is adjusted in response to the determination of the target area fan nozzle position and at least one threshold.
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