Cooper vane
A Cooper vane (also sometimes called a Dan Cooper switch or D.B. Cooper device) is a mechanical aerodynamic wedge that prevents the ventral airstair of an aircraft from being lowered in flight. In the United States, following three hijackings in 1972, the Federal Aviation Administration ordered that Boeing 727 aircraft be fitted with Cooper vanes. The device was named for an unidentified airplane hijacker dubbed D. B. Cooper, who used the rear stairway to exit a Boeing 727 in flight and make his escape via parachute.
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Cooper vane
A Cooper vane (also sometimes called a Dan Cooper switch or D.B. Cooper device) is a mechanical aerodynamic wedge that prevents the ventral airstair of an aircraft from being lowered in flight. In the United States, following three hijackings in 1972, the Federal Aviation Administration ordered that Boeing 727 aircraft be fitted with Cooper vanes. The device was named for an unidentified airplane hijacker dubbed D. B. Cooper, who used the rear stairway to exit a Boeing 727 in flight and make his escape via parachute.
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A Cooper vane (also sometimes ...... so equipped with Cooper vanes.
@en
Cooper vane − urządzenie zapob ...... nigdy więcej ich nie używając.
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L’aile de Cooper (aussi appelé ...... plus de sauter par cette voie.
@fr
Лопа́тка Ку́пера — механически ...... й воздушной лестницы самолёта.
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クーパー・ベーン (英: Cooper vane)は、旅客機 ...... おいて、飛行中にステアが開かないようにするために装着された。
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A Cooper vane (also sometimes ...... make his escape via parachute.
@en
Cooper vane − urządzenie zapob ...... ciekł skacząc ze spadochronem.
@pl
L’aile de Cooper (aussi appelé ...... t de déclencher son parachute.
@fr
Лопа́тка Ку́пера — механически ...... й воздушной лестницы самолёта.
@ru
クーパー・ベーン (英: Cooper vane)は、旅客機 ...... おいて、飛行中にステアが開かないようにするために装着された。
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Aile de Cooper
@fr
Cooper vane
@en
Cooper vane
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Лопатка Купера
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クーパー・ベーン
@ja