Hand-Cranking the Gear Down

Mark L Berry

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Hand-Cranking the Gear Down

机译：手动起落架

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Cranking the landing gear down is now almost as much of a cliche as foaming the runway. Once it was an accepted practice, but not anymore. Modern jets no longer need hand-cranks, even as an emergency method of extending the gear. The McDonnell Douglas MD-80 that I currently fly has a backup lever concealed behind an oblong access door in the floor under the first officer's leg. Normally the gear is raised and lowered hydraulically by a handle protruding from the forward instrument panel and reachable by both pilots. If that method fails, the emergency lever in the floor is pulled, and the landing gear free-falls into place. Pulling this lever is almost as easy as putting the primary landing gear handle down.

机译：现在，降低起落架摇动几乎和使跑道起泡沫一样陈词滥调。曾经是一种公认的做法，但现在已经不复存在了。现代喷气机不再需要手摇曲柄，即使将其作为扩展装备的紧急方法也是如此。我目前乘坐的麦克唐纳·道格拉斯MD-80在副驾驶员腿下的地板上的椭圆形检修门后方隐藏着备用杠杆。通常情况下，齿轮是通过从前仪表板伸出的手柄来液压升高和降低的，并且两个飞行员都可以到达。如果该方法失败，则拉下地板上的紧急控制杆，起落架自由落入到位。拉下此杆几乎与放下主起落架手柄一样容易。

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《Airways》 |2013年第3期|66-69|共4页
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Mark L Berry;
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Hand-Cranking the Gear Down

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