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Exercise 22. Fill in the gaps with the word-combinations in the right column.
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| 1. The heart of the power plant is the…. 2. Jet engines fall into…. 3. The jet is produced by the… in the compressed air. 4. Jet engines fall into two main classes: … engines and …engines. 5. When used a… produces high pressure and high temperature gas. 6. Rocket engines are used as… for missiles and research rockets, and as… of guided missiles. 7. The rocket engine carries the complete supply of… or …(oxidizer and fuel). 8. There are two basic types of rocket engines: … and …rocket engines. 9. The … is more complicated than the ramjet. 10. Turbojet, turboprop and turbofan engines belong to the family of ….. 11. The majority of modern turbojets are equipped with … compressors. 12. The turboprop engine uses propeller to provide most of its …. | 1. working fluid 2. thrust 3. solid propellant 4. rocket 5. pulsejet engine 6. propellant 7. main power plants 8. liquid propellant 9. jet engine 10. two main classes 11. gas turbine engines 12. engine 13. combustion of the fuel 14. boosters 15. axial 16. air-breathing |
Exercise 23. True or false? Express your agreement or disagreement using “You are right”, “I’m of the same opinion”, “I can’t agree with you”.
1. A rocket engine is not a jet engine; it uses atmospheric air as the propulsive fluid stream.
2. A rocket engine can not operate outside the earth’s atmosphere.
3. There are two basic types of rocket engines: liquid-propellant and solid-propellant rocket engines.
4. A rocket propulsion system may also be used as a primary power plant of an airplane.
5. The simplest type of air-breathing engines is the pulsejet engine.
6. The ramjet has found wide application in aviation.
7. The ramjet is more complicated than the pulsejet.
8. The pulsejet is suitable as an aircraft power plant because it has high fuel consumption.
9. Turbojet, turboprop and turbofan belong to the family of gas-turbine engines.
10. In a turbojet engine the diffuser takes the air and delivers it to the combustion chamber
11. The main function of the turbine is to provide power for the combustion chamber.
12. There are two types of compressors: centrifugal and axial compressors.
13. The majority of modern turbojets are equipped with centrifugal compressors.
14. The turboprop engine differs considerably from the turbojet.
15. The turboprop is lighter than a turbojet of equivalent size and power.
16. A variation of the turboprop engine is known as the turboshaft engine often used for powering guided missiles.
17. It is well known that there are liquid and solid-propellant rocket engines.
18. The turbofan engine doesn’t combine the features of both the turbojet and turboprop engines.
19. Turbofans are widely used in aviation, especially in large multi-engine aircraft.
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