Last Updated
：2025/11/29
cowl flap
（ plural ）
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(aviation) A small door on the bottom of an aircraft's cowling, used to direct additional airflow over the engine in order to improve cooling.
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cowl flap
Before takeoff, the pilot checked that the cowl flap was open to increase airflow over the engine during the climb.
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Before takeoff, the pilot checked that the cowl flap was open to increase airflow over the engine during the climb.
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