Actively controlled cooling air exhaust door on an aircraft engine nacelle
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United States of America Patent
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Nov 26, 2019
Grant Date -
Feb 18, 2016
app pub date -
Aug 18, 2014
filing date -
Aug 18, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An assembly is provided for a turbofan engine. This turbofan engine assembly includes a cowling, a door and an actuation mechanism configured to actuate movement of the door in response to receiving a control signal. The cowling is configured to form a compartment at least partially around a case of the turbofan engine. The cowling includes an exhaust port that is fluidly coupled with the compartment. The door is configured to at least partially open and close the exhaust port. This variable exhaust port may be opened in case increased airflow is needed through the compartment, such as when increased cooling airflow is needed through an environmental air precooler that cools compressed air for the aircraft cabin and the precooler exhausts its cooling air into the compartment.
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