Principles of Flight - ATPL - Airline Transport Pilot license

Question 1

Mass-balancing of control surfaces is used to:

Accepted Answer

Prevent flutter of control surfaces

Answer

Limit the stick forces.

Answer

Ensure that the control surfaces are in the mid-position during taxiing .

Answer

Increase the stick force stability.

Question 2

The frontal area of a body, placed in a certain airstream is increased by a factor 3. The shape will not alter. The aerodynamic drag will increase with a factor:

Accepted Answer

3

Answer

6

Answer

9

Answer

1.5

Question 3

An aeroplane has the following flap positions: 0°, 15°, 30°, 45°. Slats can also be selected. Generally speaking, which selection provides the highest positive contribution to the CLMAX?

Accepted Answer

The slats from the retracted to the take-off position

Answer

The flaps from 15° to 30°

Answer

The flaps from 0° to 15°

Answer

The flaps from 30° to 45°

Question 4

Dangerous stall characteristics, in large transport aeroplanes that require stick pushers to be installed, include:

Accepted Answer

Excessive wing drop and deep stall

Answer

Pitch down and yaw

Answer

Distinct aerodynamic buffet

Answer

Pitch down and increase in speed

Question 5

A slat will:

Accepted Answer

Prolongs the stall to a higher angle of attack

Answer

Provide a boundary layer suction on the upper surface of the wing

Answer

Increase the lift by increasing the wing area and the camber of the aft portion of the wing

Answer

Increase the camber of the aerofoil and divert the flow around the sharp leading edge

Question 6

How does positive camber of an aerofoil affect static longitudinal stability?

Accepted Answer

No effect, because camber of the aerofoil produces a constant pitch down moment coefficient, independent of angle of attack

Answer

Positive effect, because the centre of pressure shifts rearward at increasing angle of attack

Answer

Positive effect, because the lift vector rotates backward at increasing angle of attack

Answer

Negative effect, because the lift vector rotates forward at increasing angle of attack

Question 7

The critical angle of attack:

Accepted Answer

Remains unchanged regardless of gross weight

Answer

Increases if the CG is moved forward

Answer

Changes with an increase in gross weight

Answer

Decreases if the CG is moved aft

Question 8

The aerodynamic centre of the wing is the point, where:

Accepted Answer

The pitching moment coefficient does not vary with angle of attack.

Answer

Changes of lift due to variations in angle of attack are constant.

Answer

Aerodynamic forces are constant.

Answer

The aeroplane's lateral axis intersects with the centre of gravity.

Question 9

Gyroscopic precession of a propeller is induced by:

Accepted Answer

Pitching and yawing.

Answer

Increasing RPM and rolling.

Answer

Increasing RPM and yawing.

Answer

Pitching and rolling.

Question 10

Low speed pitch up is caused by the:

Accepted Answer

Spanwise flow on a swept back wing

Answer

Mach trim system

Answer

Wing tip vortex

Answer

Spanwise flow on a swept forward wing

Quiz Principles of Flight - ATPL - Airline Transport Pilot license

Test 10 Questions ATPL - Airline Transport Pilot license - Principles of Flight, no time limit