ATPL Principles of Flight and Aerodynamics

Question 1

According to Bernoulli's principle, what happens to static pressure when airflow velocity increases over an airfoil?

Accepted Answer

Static pressure decreases

Answer

Static pressure increases proportionally

Answer

Static pressure remains constant

Answer

Dynamic pressure decreases

Question 2

The angle of attack (AOA) is defined as the angle between:

Accepted Answer

The relative wind and the chord line of the wing

Answer

The wing chord line and the aircraft's longitudinal axis

Answer

The flight path and the horizon

Answer

The aircraft pitch attitude and the horizon

Question 3

Which type of aerodynamic drag increases as airspeed increases?

Accepted Answer

Parasite drag

Answer

Induced drag

Answer

Vortex drag

Answer

Profile drag at low speed

Question 4

Induced drag is directly associated with:

Accepted Answer

Lift production

Answer

Wing surface area only

Answer

Airspeed squared

Answer

Fuselage cross-sectional shape

Question 5

A stall of an airfoil occurs when:

Accepted Answer

The critical angle of attack is exceeded

Answer

Airspeed drops below a specific fixed value for all conditions

Answer

Aircraft weight exceeds maximum available lift coefficient

Answer

Engine power is reduced below a threshold

Question 6

Which flap type produces the greatest increase in both lift coefficient and wing area?

Accepted Answer

Fowler flap

Answer

Plain flap

Answer

Split flap

Answer

Krueger flap

Question 7

The lift coefficient (CL) of an airfoil at subsonic speeds is primarily controlled by:

Accepted Answer

Angle of attack

Answer

True airspeed

Answer

Air density altitude

Answer

Wing aspect ratio