航空发动机专业英语之飞机机体分解课件.ppt
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- 航空发动机 专业 英语 飞机 机体 分解 课件
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1、1.7 Airfoil An airfoil is any part of an aircraft that is designed to produce lift.The wing is the primary airfoil but the propeller can also be an airfoil as well as the tail surfaces or sometimes even the fuselage itself.An airfoil has a leading edge,a trailing edge,a chord,and camber.The leading
2、edge is the“front”of the airfoil the portion that meets the air first.The trailing edge is the back of the airfoil the place at which the airflow over the upper surface of the airfoil joins the airflow over the lower surface of the airfoil.1English specialized in engine第1页,共24页。Figure 1.6 The elemen
3、ts of an airfoil airfoil 翼型fuselage 机身,壳体leading edge 前缘trailing edge 后缘chord 弦camber 弯度2English Specialized in engine第2页,共24页。The chord of an airfoil is the imaginary straight line drawn through the airfoil from its leading edge to its trailing edge.The camber of an airfoil is the curve of its uppe
4、r and lower surfaces.This curve is measured by how much it departs from the chord of the airfoil.Some airfoils have very little camber,i.e.,the airfoil looks flat,while others have a higher degree of camberthe airfoil has more curve.The term upper camber refers to the camber of the upper surface of
5、the airfoil.The term lower camber refers to the camber of the lower surface of the airfoil.3English Specialized in engine第3页,共24页。The camber of an airfoil affects its lift.The direction of the air that is flowing past an airfoil relative to the path of flight is called the relative wind.The relative
6、 wind is always parallel and opposite in direction to the path of flight.imaginary straight line 假想的直线depart from 离开i.e.也就是flat 平,扁平lift 升力4English Specialized in engine第4页,共24页。parallel 与相似,相同的,同样的1.8 Airplane Parts DefinitionsFigure 1.7 Airplane Parts Definitions5English Specialized in engine第5页,共
7、24页。nCockpit 驾驶座,驾驶舱nJet engine 喷气发动机nThrust 推力nWing 机翼nHorizontal stabilizer 水平安定面nPitch 俯仰nVertical stabilizer 垂直安定面nYaw 偏航nRudder 方向舵nSide-to-side 左右6English Specialized in engine第6页,共24页。nElevator 升降舵nUp-down 上下nFlaps 襟翼nDrag 阻力nAileron 副翼nRoll 旋转nSpoiler 扰流片,扰流器nSlats 前缘缝翼nPayload 有效负载7English
8、Specialized in engine第7页,共24页。This page shows the parts of an airplane and their functions.Airplanes are transportation devices which are designed to move people and cargo from one place to another.Airplanes come in many different shapes and sizes depending on the mission of the aircraft.The airplan
9、e shown on this slide is a turbine-powered airliner which has been chosen as a representative aircraft.airliner班(客)机8English Specialized in engine第8页,共24页。nrepresentative典型,有代表性nFor any airplane to fly,you must lift the weight of the airplane itself,the fuel,the passengers,and the cargo.The wings ge
10、nerate most of the lift to hold the plane in the air.To generate lift,the airplane must be pushed through the air.The jet engines,which are located beneath the wings,provide the thrust to push the airplane forward through the air.The air resists the motion in the form of aerodynamic drag.Some airpla
11、nes use propellers for the propulsion system instead of jets.9English Specialized in engine第9页,共24页。nlocate设置,安排,固定nbeneath在下方,在之下nmotion运动nTo control and maneuver the aircraft,smaller wings are located at the tail of the plane.The tail usually has a fixed horizontal piece(called the horizontal stab
12、ilizer)and a fixed vertical piece(called the vertical stabilizer).The stabilizers job is to provide stability for the aircraft,to keep it flying straight.10English Specialized in engine第10页,共24页。nThe vertical stabilizer keeps the nose of the plane from swinging from side to side,while the horizontal
13、 stabilizer prevents an up-and-down motion of the nose.(On the Wright brothers first aircraft,the horizontal stabilizer was placed in front of the wings.Such a configuration is called a canard after the French word for“duck”).At the rear of the wings and stabilizers are small moving sections that ar
14、e attached to the fixed sections by hinges.11English Specialized in engine第11页,共24页。nIn the figure,these moving sections are colored brown.Changing the rear portion of a wing will change the amount of force that the wing produces.The ability to change forces gives us a means of controlling and maneu
15、vering the airplane.The hinged part of the vertical stabilizer is called the rudder:it is used to deflect the tail to the left and right as viewed from the front of the fuselage.12English Specialized in engine第12页,共24页。nThe hinged part of the horizontal stabilizer is called the elevator,it is used t
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