Principles of Flight (Helicopter) - PPL(H) - Private Pilot License

Question 1

The drive system of the autogyro's main rotor is based on...

Accepted Answer

The speed of the airflow.

Answer

A fan in the cabin.

Answer

An engine in the cabin.

Answer

An engine at the rotor blade tip

Question 2

Which statement about the required force to change the pitch angle is correct?

Accepted Answer

It must be greater than the tangential force

Answer

It is the smallest by using an advance angle of 90°

Answer

It is the smallest by using a delta-three-hinge

Answer

It must be greater than the rotor disc loading

Question 3

The rotor RPM is kept constant in the helicopter by the engine RPM. It can be influenced by the...

Accepted Answer

Throttle and the governor.

Answer

Cyclic stick.

Answer

Starter and the impulse coupling.

Answer

Collective.

Question 4

What is the effect of vortex ring state?

Accepted Answer

High rate of descent and irregular pitch, roll, and yaw motions

Answer

Stable descent and high-frequency vibrations in the helicopter

Answer

Decreased rate of descent and strong vibrations from the engine

Answer

Fluctuations in rotor and engine RPM

Question 5

The virtual rotation axis of a rotor is...

Accepted Answer

Perpendicular to the tip path plane.

Answer

Perpendicular to the hub plane.

Answer

Parallel with the main rotor shaft.

Answer

Perpendicular to the plane which contains the swash plate.

Question 6

An increase of stability in a helicopter causes...

Accepted Answer

A reduced controllability.

Answer

A decrease of general aviation safety.

Answer

An optimization of the maximum helicopter mass.

Answer

An enhancement of control under negative load factors.

Question 7

The rotor blade shape takes effect on the...

Accepted Answer

Lift distribution.

Answer

Rotor head used.

Answer

Noch sensitivity.

Answer

Structural take-off mass.

Question 8

What force affects the braking torque of the rotor in cruise?

Accepted Answer

Inclined rearward tangential force

Answer

Inclined forward lift

Answer

Upward directional rotor thrust

Answer

Inclined forward drag force

Question 9

What is the purpose of the vertical stabilizer?

Accepted Answer

Improvement of directional stability

Answer

Adjustment of longitudinal stability

Answer

Compensation of tail rotor stability

Answer

Reduction of manoeuvre stability

Question 10

If the critical angle of attack is exceeded, the...

Accepted Answer

Boundary layer on the upper side of the rotor blade begins to separate.

Answer

Transition point starts moving towards the airflow direction.

Answer

Boundary layer on the lower side of the rotor blade begins to separate.

Answer

Laminar boundary layer turns into a turbulent boundary layer.

Quiz Principles of Flight (Helicopter) - PPL(H) - Private Pilot License

Test 10 Questions PPL(H) - Private Pilot License - Principles of Flight (Helicopter), no time limit