C03 - Air Flow

Question 1

The closer the streamlines are the ‘____’ the flow?

Answer 1

Faster.

Question 2

Define Laminar Flow?

Answer 2

Air flow which is smooth and predictable. It’s speed and direction can be easily measured.

Question 3

True of False. Laminar Flow is relatively disturbed and resistance is acted on both the air flow and the object?

Answer 3

False.

Question 4

Define Turbulent Flow?

Answer 4

Air flow which is characterised by chaotic changes in pressure and velocity.

Question 5

True or False. Turbulent Flow is disturbed air which has a considerable amount of resistance?

Answer 5

True.

Question 6

Define Vortex Flow?

Answer 6

A mixture of both Laminar and Turbulent Flow.

Question 7

The production of Vortices can cause what to the flow?

Answer 7

Considerable Resistance.

Question 8

Are Vortex flow steady or unsteady?

Answer 8

Steady.

Question 9

True or False. Speed and direction can’t be measured in a Vortex Flow?

Answer 9

False. Speed can but direction can’t.

Question 10

Air moving over and around an Aircraft includes which types of flow?

Answer 10

All three (Laminar, Turbulent and Vortex).

Question 11

What is Bernoulli’s principle?

Answer 11

In a flow of an ideal fluid, the sum of pressure and kinetic energy remains constant.