航空专业英语 The Parts of an Airplane 飞机起落架.pptx

1.2.0 Landing gearThe undercarriage of an airplane is its landing gear. Early airplanes had two main wheels under the fuselage or wings and a smaller wheel under the tail. 飞机的起落架是它的着地装置。在早期飞机在机身或机翼下面有两个主轮，在尾部有一个较小的轮子。（Landing Gear）起落装置用于飞机的起飞、着陆和滑行并支撑飞机。飞机的前轮可偏转，用于地面滑行时控制方向。飞机的主轮上装有各自独立的刹车装置。 Since this was the original method of designing landing gear , it is called conventional landing gear (see Figure 2.3).因为这是原始的设计起落架方法，所以它被称为老式/传统起落架。Today most airplanes are designed with the main wheels farther aft on the fuselage or wing and with a nose wheel rather than a tail wheel. 今天绝大部分飞机设计，将主起落架位置设计在机身后部或机翼下，同时用机头的前轮代替了（过去的）尾轮。This is the tricycle configuration. Tricycle gear airplanes are easier to control on the ground，Especially during landing.这就是前三点式起落架设计。 前三点式起落架飞机在地面上较容易控制，特别是在着陆时。飞机起落架失灵%20卡车抗住机头成功迫降%20标清(270P).qlv请看视频The landing gear on an airplane is either fixed or retractable. Fixed gear is cheaper, easier to maintain, and foolproof (you don’t have to remember to put it down before landing ). 飞机起落架有的是固定的，有的是可回收的。固定的起落架便宜，容易维护，和无比安全（在着陆前你不必不得不记得放下起落架）。Aerodynamically, a retractable gear is preferable because with the wheels and struts placed inside the wing or fuselage , there is less interference with the flow of air.就空气动力学而言，可回收起落架是较优越的，因为当把轮子和支柱放在机翼或机身里时就减少了对空气流动的干扰。