Контрольная работа № 4(2)

I. Прочитайте, а затем письменно переведите 2, 3, 4, 5 абзацы текста. Английский текст перепишите на левой странице тетради, русский – на правой:

The Wings of Main Planes.

1. The wing is one of the main parts of the aeroplane which extends equally on each side of the fuselage. It serves for creating lift and supporting the machine in the air. Constituting the main supporting and lifting surfaces the wings must have good aerodynamic profiles, i. e.[*], good streamlined shape. The design of the wing depends upon such factors as the size, weight and the use of the aeroplane, desired speed, rate of climb.

2. The wing consists of the following structural members: spars, stringers, ribs and skin. Spars are principal span-wise members of the wing structural foundations of the wing. All air loads acting on the wing in flight are transferred from the skin to the ribs then to the spars.

3. Ribs are chord-wise members of the wing structure. Their function is twofold. They serve for giving the wing special streamlined shape and for transferring air loads from the skin to the spar.

4. Stringers are span-wise members, they are riveted to the inside of the skin parallel to and between the spars to reinforce the skin. In modern design the skin, riveted to the ribs and stringers not only transfers the loads to the ribs but carries a part of wing stresses and such a construction is called the stressed skin construction.

5. Structural members may be made of different materials, this varies with the type of the aeroplane. If the members of the design are made entirely of metal, the wing is of all metal construction. In this case the structural members are made of aluminium alloy, titanium alloy and alloy steel.

II. Найдите в тексте ответы на следующие вопросы:

1. What is the function of the wing?

2. What does the design of the wing depend on?

III. Найдите в тексте производные от следующих слов, выпишите их, переведите на русский язык, укажите часть речи:

To desire, to lift, to follow, structure, to found, to construct, to stress, entire.

IV. Перепишите и переведите на русский язык следующие предложения, подчеркните инфинитив и определите его функцию:

1. The usual method of construction is to build the wings in three main sections.

2. The space within the cowling receives cooling air to ensure normal operating conditions for the electrical units located there.

3. The engineer selected all the units to be used in the experiment.

4. To increase flying safety, the most vital units maintaining the normal pressure and heating conditions are duplicated.

V. Перепишите и переведите на русский язык следующие предложения. Подчеркните причастия I и II и определите их функции:

1. The wings of an aeroplane are not made in one single pieсe from one wing tip to the other.

2. All the aircraft cabin and two baggage compartments are located in the pressurized portion of the fuselage forming the "pressurized cabin".

3. Turning to the problem of jet propulsion we must first of all consider the principle of jet engine operation.

4. In general the fuselage must be designed so as to have a streamlined shape.

VI. Перепишите и переведите на русский язык следующие предложения, подчеркните герундий:

1. Ribs serve for giving the wing special streamlined shape.

2. A surface capable of developing high values of lift with small values of drag is called a wing.

3. Only after having applied force we could change the volume and the form of a solid body.

4. The horizontal stabilizer assists in maintaining level flight by reducing any tendency of the airplane for pitching.

Date: 2016-05-25; view: 831; Нарушение авторских прав