1.3.2 - Wings

Question 1

With the aid of a diagram, show the contruction of a modren cantilever wing (C.S.A)

Answer 1

Question 2

How are wing tips attached to the wing?

Answer 2

Botls and Screws

Question 3

What type of wing is internally braced?

Answer 3

A cantilever wing is internally braced

Question 4

What is the purpose of ribs?

Answer 4

The ribs give the wing its shape and rigidity

Question 5

What is the difference between a pressed rib and a truss rib?

Answer 5

Truss ribs are built up out of profiles that are joined together

Pressed ribs are manufactured in a hydro press

Both are made of aluminium alloy

Question 6

What is an integral tank?

Answer 6

The area between the spars, ribs, upper and lower skin panels is completely sealed off by rivets and all seams are closed with sealant so that no fuel can leak through.

Question 7

What provisions are made for the attachment of flight controls to the wing of an aircraft?

Answer 7

Flap/ slat tracks or hinges and flight control surfaces are bolted to the spars or reinforced ribs

Question 8

How are cantilever wings attached to the fuselage?

Answer 8

the wing has a strong centre section built into the
fuselage.

The engines and landing gear attach to this centre section. Rather than using the familiar two-spar construction, most of these wings are of the multi-spar construction in which several spars carry the flight loads, and spanwise stiffeners run between the spars to provide even greater strength.

Question 9

How are integral fuel tanks sealed?

Answer 9

Sealed off by rivets and all seams are closed with sealant so that no fuel can leak through

Question 10

What kind of stressed skin structure is used for the construction of wings?

Answer 10

The outer skin carries the greatest amount of the stresses

Semi-monocoque construction is generally used for the main portion of the wing

Question 11

Describe the meaning of: cantilever wing

Answer 11

A cantilever wing does not need any external struts or braces

A cantilever wing is only internally braced

Question 12

On aircraft, the wing position ensures that the centre of _____ is positioned just slightly behind the centre of _____

Answer 12

pressure

gravity

(couple will naturally cause a nose down tendency with loss of engine thrust so that plane will glide naturally)

Question 13

In addition to the _____ loads imposed on the structure in flight, the wing is also subject to _____ loads

Answer 13

twisting

bending

Question 14

Modern Wing spars are constructed of extruded _______

Answer 14

aluminium alloy

Question 15

An internally braced wing is called a _____ wing.

It does not need any external ____ or ____

Answer 15

cantilever

struts

braces

Question 16

In flight, the wing is subjected to …… (loads)

Answer 16

twisting and bending loads

Question 17

Modern spars are usually in the shape of a/an ……(beam)

Answer 17

i beam

Question 18

The rib in a wing runs from the ______ to the _____

and gives the wing it’s ____ and _____

Answer 18

leading edge to the trailing edge

shape and rigidity

Question 19

Wing spar runs from the ____ to the _____

Answer 19

wing root to the wing tip

Question 20

A cantilever wing has no ….

It only contains _______ _____

Answer 20

external struts or braces

It only contains internal bracing