2. Match the antonyms.

A B

Leading Secondary

Take off Fixed

Primary Weaken

Root Trailing

Different Landing

Reinforce Tip

Transverse Similar

Movable Longitudinal

3. Give the English equivalents to the words in the brackets.

1. Rib is a ( поперечный) element of a wing structure.

2. The main longitudinal structural members of the wing structure are –

( лонжероны, стрингеры и балки).

3. A typical construction of the wing must resist ( изгибу, сдвигу и кручению).

4. (Топливные баки), control mechanisms and very often (двигатели) and landing gear (отсеки) are arranged in the wing structure.

4. Translate into English the following words and word combinations.

Работающая обшивка, гондола шасси, низкоплан, среднеплан, высокоплан, изгибающая нагрузка, корневая часть крыла, закрылок, отсек шасси, механизм управления, продольный элемент жёсткости, форма крыла, напряжение.

5. Use the prepositions in the box to complete the sentences.

F from with into in of on to

1. The wing is divided ______ three sections

2. There are some movable parts ____ the trailing edge of the wing.

3. Fuel tanks, control mechanisms and very often engines and landing gear bays are arranged ___ the wing structure.

4. The distance ____ the leading edge of the wing ___ the trailing edge is the chord.

5. The wing structure is covered _____ skin.

6. The wing structure consists ___ longitudinal and transverse elements.

Writing

1. Look at the picture and predict what kind of aircraft it is. Explain why you think so.

2. Translate the text in a written form.

Flying wing is the generic designation given for a fixed-wing aircraft configuration which is capable of stable, controllable flight without the aid of lifting surfaces other than the main wing itself, that is, without auxiliary surfaces such as "tails" and "canards".

In it strictest sense, the Flying Wing also lacks a fuselage, or has only a rudimentary fuselage 'pod' barely extending from the wing itself. In this layout, most of the payload is transported inside the main wing, the latter comprising most of its structural volume. A pure flying wing also lacks any vertical stabilizers, although some aircraft commonly known as 'flying wings' have a vertical tail fin, vertical tail surfaces or a set of vertical stabilizers on the back part of their wings to help their stability in turns.

The less restrictive designation of "tailless aircraft" includes the flying wing aircraft, but also all aircraft without stabilizers or canards, but with a full-length payload bearing fuselage, such as delta aircraft.

Historically, the flying wing has been defended by many as potentially the most efficient aircraft configuration from the point of view of aerodynamics and structural weight. Such a notion usually comes from the idea that the absence of any aircraft components other than the wing should naturally provide those benefits. On the other hand, the aircraft's wing should be able to provide flight stability and control "by itself", a requirement which in principle imposes additional constraints to the wing design problem. Therefore, the expected gains in weight and drag reduction may be partially or wholly negated due to design compromises needed to provide stability and control.

UNIT 6