机务英语第四册口语Word格式文档下载.docx

1、Lesson Twelve Navigation P. 149Lesson Thirteen Auto Flight P. 153Lesson Fourteen Hydraulic System P. 158Lesson Fifteen Electrical Power P. 163Lesson Sixteen Navigation P. 167Lesson Seventeen Fuel P. 171Lesson Eighteen Centre Maintenance System P. 177Lesson Nineteen Oil P. 181Lesson Twenty Flight Con

2、trol P. 184 Lesson OneAir conditioning SystemPart one: Read the following passage and memory as much as you can, and then describe the diagram below with your own words.The air conditioning system supplies pressurization to the whole passenger compartment, the cockpit, all the cargo compartments and

3、 the avionic compartment.There are areas in the fuselage that are not pressurized and they are separated by pressure bulkheads.Areas that are not pressurized are the landing gear bays, the radome and the tail cone.Exercises: 1Questions to the Text:1.Where is pressurized by the air conditioning syste

4、m?2.Are there any un-pressurized areas? What are they?3.Radome is pressurized, isnt it?Exercises 2:Describe Fig.1 with what you have learned in the text. Speak as much as possible with your own words. Fig. 1 Fig.1 Air conditioning systemPart Two:Electricity is mainly used for electrical heating, for

5、 lighting, to produce mechanical power, and last but not least to supply all the electronic devices.Electrical power for heating is mainly used in the galleys for ovens and coffee machines. It is also used in anti ice systems to prevent icing of air data probes, water systems and cockpit windows.Lig

6、hting equipment is mainly used in the cockpit to provide sufficient general brightness and to illuminate the working areas like panels and maps and in the cabin for passenger comfort and safety and outside the aircraft to make the aircraft visible for other aircraft and to illuminate the ground duri

7、ng takeoff and landing.Mechanical power is produced by electric motors, which are mainly used to drive pumps, for example, fuel and hydraulic pumps or to drive a valve to the commanded position in the fuel, hydraulic or air conditioning system or to move mechanical parts like doors and cargo contain

8、ers.Electronic devices that are used in nearly all aircraft systems are the computers for system control and monitoring and the control inputs and indications in the cockpit and sensors throughout the whole aircraft.Exercise 1:1.What is electrical power used for?2.Where does the heating for oven and

9、 coffee machines come from?3.What is lighting equipment used for?4.Are there any lighting equipment outside the aircraft?5.What are the purpose for the lights outside the aircraft?6.How is the valve controlled?7.Electronic devices are used to control various systems, arent they?Describe Fig.2 with w

10、hat you have learned in the text. Speak as much as possible with your own words.Fig. 2 Electrical Power Lesson TwoAuto FlightPart One:The aircraft has three axes. They are called:-the longitudinal or x-axis-and the lateral or yaxis-the vertical or z-axisThe Autopilot controls the aircraft attitude d

11、irectly around 2 axes, by elevator deflections from the pitch channel and aileron deflections from the roll channel .Autoland Autopilots can also control the aircraft attitude directly around the vertical axis by rudder deflections from the yaw channel.The Yaw damper controls the rudder to dampen du

12、tch roll oscillations （swings） during the entire flight.The pitch trim system moves the horizontal stabilizer, to compensate for changes in the center of gravity and center of lift during flight.Autothrottle is the only system that can control an aircraft motion along an axis,called a translatory mo

13、tion. It generates accelerations in the x-axis by controlling the engine thrust.1.How many axes does an aircraft move along?2. What is the function of the Yaw Damper?3. What is the function of the Pitchtrim?4. How does an aircraft accelerate?5. How is vertical movement of an aircraft achieved?Exerci

14、se 2:Describe Fig.3 with what you have learned in the text. Speak as much as possible with your own words.Fig. 3 Axes of An AircraftFig. 3 Pitch Yaw and Roll Read the following passage and memory as much as you can, and then describe the diagram below with your own words.All modern aircraft are equi

15、pped with autoflight systems.Typically, an autoflight system has the following subsystems:- the Autopilot, or AP in short- the Flight Director, or FD 飞行指引- the Autothrottle System, usually abbreviated as ATS- the Automatic Pitch Trim System, also called Autotrim- and the Yaw Damper System, or YDThe

16、Flight Director shows the pilot how to fly the aircraft manually. This is done by Flight Director Command bars in the Primary Flight Display - PFD or Attitude Director Indicator-ADI.The Autothrottle System reduces the workload for the pilots by controlling the engine power automatically.Autotrim mai

17、ntains pitch stability during all phases of the flight. It usually adjusts the horizontal stabilizer automatically.The Yaw Damper improves the dynamic stability of the aircraft during the whole flight.The FMS does navigation and performance calculations for optimum flight performance.Questions to th

18、e text:1.How many subsystems does autoflight consist of?2.What does flight director show?3.What is the function of Autothrottle?4.What is autotrim used for?5.Which subsystem can improve the aircraft dynamic stability?6.what does FMC stand for?Describe Fig.4 with what you have learned in the text. Sp

19、eak as much as possible with your own words.Fig. 4 Autoflight SystemLesson ThreeAir SourceOn aircraft pneumatic energy is used for engine starting, cabin pressurization and air conditioning, wing anti-icing, water reservoir pressurization and hydraulic reservoir pressurization on some aircraft.You m

20、ay find other systems and components that also work pneumatically, for instance, air-driven pumps for hydraulics or air motors used for slat operation. In any pneumatic systems, air pressure and temperature need to be as constantas possible to support the different consumers effectively.1.What is th

21、e function of aircraft pneumatic system?2.why constant air pressure and temperature are needed?3.Does air-driven work pneumatically or hydraulically?4.Air motors are used for hydraulic system operation, arent they?Describe Fig.5 with what you have learned in the text. Speak as much as possible with

22、your own words.Fig. 5 Pneumatic SystemA modular engine construction is used on all modern aircraft. The whole engine is split up into a set of separate major modules. These engine modules are pre-assembled and balanced. They are specially designed to be removed and replaced more easily. The modules

23、remain intact after removal and do not fall to pieces.The major engine modules are further divided into individual modules. The number of modules depends on the manufacturer and on the engine type.1.Why are engines are designed into a set of separate modules?2.What would be like if engine is disasse

24、mbled?3.Can the engine module be further divided?4.How many modules does an engine contain?Describe Fig.6 with what you have learned in the text. Speak as much as possible with your own words.Fig. 6. Engine ConstructionLesson FourCommunicationFor communication in aircraft we need two general compone

25、nts for nearly all systems:Microphones transfer the acoustic information into an electrical signal. Loudspeakers transfer the electrical signal back into acoustical information. Different types of microphone are used in the cockpit. An area microphone, which is usually installed on the ceiling panel

26、, is used by the voice recorder to record the general cockpit sounds; a handheld microphone is used for announcements to the passengers; and integrated microphones are contained in the oxygen mask or the headset. These are called the boomset.1.What makes it possible for the communication in aircraft

27、?2.What is the function of a microphone?3.Which component transfer the electrical signal into acoustical information?4.How many types of microphone are used in the cockpit?5.What type of microphone does the voice recorder use?6. Where is the voice recorder microphone located?Describe Fig.7 with what you have learned in the text. Speak as much as possible with your own words.