Cooper vane

English

After Dan Cooper, the false name used by an unidentified hijacker who used the rear stairway to exit a Boeing 727 in flight and escape via parachute.

Cooper vane (plural Cooper vanes)

(aviation) A mechanical aerodynamic wedge that prevents the ventral airstair of an aircraft from being lowered during flight.

单词	Cooper vane
释义	Cooper vane English Etymology After Dan Cooper, the false name used by an unidentified hijacker who used the rear stairway to exit a Boeing 727 in flight and escape via parachute. Noun Cooper vane (plural Cooper vanes) (aviation) A mechanical aerodynamic wedge that prevents the ventral airstair of an aircraft from being lowered during flight.
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