Principles of Flight

Question 1

The downwards force of attraction between the aeroplane and the earth is called the?

Answer 1

Weight

Question 2

The force produced by the wings that supports the aeroplane in flight is called the?

Answer 2

Lift

Question 3

The force produced by the engine propeller is called the?

Answer 3

Thrust

Question 4

The force that resists the motion of the aeroplane through the air is called the?

Answer 4

Drag

Question 5

In straight and level cruising flying the aeroplane is in equilibrium, with the weight balanced by the?, and the drag balanced by the?

Answer 5

Lift

Thrust

Question 6

The lift force is generally much (greater/smaller) that the drag force in flight.

Answer 6

Greater

Question 7

The weight of an aeroplane can be considered as a single force acting through the?

Answer 7

Centre of gravity

Question 8

Define wing loading

Answer 8

Weight of the aeroplane per unit wing area

Question 9

An aeroplane weighs 3,000 lb and has a wing area of 200 square feet. What is it’s wing loading?

Answer 9

15 lbs / square ft