Aviation and Aerospace Engineering

Question 1

1A rocket can work in space, where there is no air, because

Medium

A. it pushes against the air B. it carries its own oxidiser along with its fuel C. it uses wings for lift D. there is no gravity in space

Question 2

2An aircraft flying at Mach 2 is flying at

Easy

A. the speed of light B. twice the speed of sound C. 2 km/h D. half the speed of sound

Question 3

3Jet engines take in air, compress it, burn fuel and

Easy

A. store the air B. cool the fuel C. expel hot gases at high speed D. produce electricity only

Question 4

4A turbofan engine produces most of its thrust from

Medium

A. the wings B. the large fan moving air around the core C. the exhaust only D. the propeller

Question 5

5A turboprop engine uses a gas turbine to drive

Easy

A. a propeller B. a rocket C. a rotor only D. a generator only

Question 6

6Specific fuel consumption measures

Hard

A. fuel tank size B. engine weight C. top speed D. fuel used per unit thrust or power per hour

Question 7

7As altitude increases, air density

Easy

A. increases B. stays the same C. decreases D. becomes infinite

Question 8

8The layer of the atmosphere in which most weather occurs is the

Easy

A. stratosphere B. thermosphere C. troposphere D. mesosphere

Question 9

9Taking the speed of sound as 340 m/s, how fast is an aircraft flying at Mach 0.8?

Easy

A. 425 m/s B. 68 m/s C. 340.8 m/s D. 272 m/s

Question 10

10A jet engine works on the principle of

Easy

A. Newton's third law B. Ohm's law C. Hooke's law D. Archimedes' principle