Read the text again and decide if these statements are true or false



1. There are two main functions of the wing – to produce lift and to house 

many vital parts of the aircraft.

2. Movable parts of the wing are located on the leading edge.

3. Span - it is a distance between the wing tips.

4. Light weight is of no importance in an airplane structure.

5. Ribs are longitudinal members of the wing structure.

6. Spars, stringers and beams are spanwise stiffeners of the wing structure.

7. Skin is the covering of the wing structure and it can carry structural loads.

 

These are the answers. What are the questions?

1. – the wings.

2. – a wing root, an intermediate section and the wing tip.

3. – on the trailing edge.

4. – chord.

5. – longitudinal and transverse elements.

 

Vocabulary Focus

 

Match the synonyms.

A                                                   B

                     Wing                                           Rear edge

                    Front edge                                     Bay

                     Shape                                           Engine

                   Covering                                        Airfoil

                     Section                                          Form

                  Trailing edge                                    Skin

                   Power plant                                  Leading edge

Match the antonyms.

                      A                                                     B

                Leading                                          Secondary

               Take off                                              Fixed

               Primary                                             Weaken

                 Root                                                 Trailing            

              Different                                             Landing

              Reinforce                                              Tip

              Transverse                                           Similar

                Movable                                               Longitudinal

 

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.

 

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.

 

Use the prepositions in the box to complete the sentences.

       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

 

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

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.

Speaking

1. Analyse conventional wing and flying wing. Compare them. Highlight their similarity and difference. Make a report to your group mates. The following expressions might be helpful:

· The object of this report is …

· First of all I would like to ….

· It should be stressed …

· In comparison with ….

· Summimg up, I would like to …

 

UNIT 8

Tail Group


Дата добавления: 2018-04-05; просмотров: 413; Мы поможем в написании вашей работы!

Поделиться с друзьями:






Мы поможем в написании ваших работ!