Exercise 5. After reading this information about famous inventors and their inventions, try to find more and realize it in your own projects.
Sir Isaac Newtonin the 18th century was the first to theorize that a rearward-channeled explosion could propel a machine forward at a great rate of speed. This theory was based on his third law of motion. As the hot air blasts backwards through the nozzle the plane moves forward.
Henri Giffardbuilt an airship which was powered by the first aircraft engine, a three-horse power steam engine. It was very heavy, too heavy to fly.
In 1874,Felix de Temple, built a monoplane that flew just a short hop down a hill with the help of a coal fired steam engine.
Otto Daimler, in the late 1800's invented the first gasoline engine.
In 1894, American Hiram Maximtried to power his triple biplane with two coal fired steam engines. It only flew for a few seconds.
The early steam engines were powered by heated coal and were generally much too heavy for flight.
American Samuel Langleymade a model airplanes that were powered by steam engines. In 1896, he was successful in flying an unmanned airplane with a steam-powered engine, called the Aerodrome. It flew about 1 mile before it ran out of steam. He then tried to build a full sized plane, the Aerodrome A, with a gas powered engine. In 1903, it crashed immediately after being launched from a house boat.
In 1903, the Wright Brothersflew, The Flyer, with a 12 horse power gas powered engine.
From 1903, the year of the Wright Brothers first flight, to the late 1930s the gas powered reciprocating internal-combustion engine with a propeller was the sole means used to propel aircraft.
It was Frank Whittle, a British pilot, who designed the first turbo jet engine in 1930. The first Whittle engine successfully flew in April, 1937. This engine featured a multistage compressor, and a combustion chamber, a single stage turbine and a nozzle.
The first jet airplane to successfully use this type of engine was the German Heinkel He 178. It was the world's first turbojet powered flight. General Electric for the US Army Air Force built the first American jet plane. It was the XP-59A experimental aircraft.
Exercise 6. Do you know the history of the aircraft engine construction in Russia? Complete the dialogue.
a. …?
b. The aircraft engine construction began in Russia at the end of the 19th century with Mozhaisky’s steam engine and the steam turbine of the Russian engineer Kuzminsky.
a. …?
b. As far as I know Kuzminsky’s engine consisted of an air compressor, a combustion chamber and a multistage turbine.
a. … ?
b. Such Russian scientists as V.Tatarinov, A.Ufimtsev, S.Grizodubov, B.Lutsky worked at the development of aircraft piston engines.
a. … ?
b. The first piston engines had from 3 to 8 cylinders and produced 20-80 horse powers.
a. … ?
b. In 1924 the M-11 air - cooled engine designed by Shvetsov went into serial production. It had high reliability, small size and weight and low coast.
a. … ?
b. The U-2 (Po-2) training aircraft were powered by the M-11 engines for a long time.
a. … ?
b. Such names as V.Klimov, A.Kuznetsov, A.Mikulin, A.Shvetsov, A.Lulka have become famous in our country as well as abroad.
a. … ?
b. They constructed powerful and reliable turbojet and turboprop engines.
a. … ?
b. The PS-90 turbofan engine designed by P.Solovyev is the best aircraft engine in the world.
Exercise 7. Fill in the gaps with the word-combinations in the right column.
| 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 |
Grammar Practice
That (those)
| 1. that (those)+ noun – указательные местоимения тот, та, то (те) | That engine produced great noise during its operation. – Тот двигатель создавал … |
| 2.that (those) + of + noun – слова – заместители существительного | The work of a new device is much more efficient than that of the old one. -…чем работа старого. |
| 2. that – союз: a. что b. то что c. который (относительное местоимение) | He said that he would come back in 10 minutes.– Он сказал, что вернется ... That he is a good driver is a well-known fact. - То что он хороший… Windows is a software program that makes your PC easy to use. - … программа, которая делает … |
Exercise 8. Translate the sentences with that (those) which are used instead of nouns.
1. The working cycle of the gas turbine engine is similar to that of the four-stroke piston engine.
2. The diameter of Mars is 4,200 miles about half that of the Earth.
3. Hydrogen atoms are the lightest of those of any other elements.
4. The elements of which the Sun and stars consist are almost the same as those of the Earth.
5. The radio waves come back from an object in the same way as those of a light.
6. Chemical properties of phosphorus are like those of nitrogen.
7. The proton has a mass of 1,837 times that of the electron.
8. Theproperties of the metal are very close to those of aluminium.
9. Navigation by radio is much more efficient than that by any other means.
Exercise 9. Translate the sentences. Pay attention to the functions of that and those.
1. Newton’s third law of motion states that “for every force acting on a body there is an opposite and equal reaction”.
2. Both engine cycles show that in each engine instance there is induction, compression, combustion and exhaust.
3. It must be noted that controlled atomic energy has already produced electric power and marine propulsion power.
4. An axial flow compressor consists of one or more rotor assemblies that carry blades of airfoil section.
5. It must be stated that engines present one of the most interesting groups of problems considered in the engineering field.
6. Although a rocket engine is a jet engine, it has one major difference in that it does not use atmospheric air as the propulsive fluid stream.
7. The power of the jet engine is much higher than that of the diesel engine.
8. The engine of the aircraft must be lighter than that of any ground vehicle.
9. The turbo-rocket engine has one major difference in that it carries its own oxygen to provide combustion.
10. The flexibility of a diesel engine is higher than that of a gasoline engine.
11. The speed of the car is less than that of a plane.
12. The weight of diesel engines is heavier than that of gasoline engines.
13. This vehicle requires longer overhaul than that vehicle.
14. The speed of jet engines is much more than that of piston engines.
15. The pressure in the jet engine is higher than that in the diesel engine.
16. The payload of an aircraft is usually higher than that of a tank.