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

Question 1

The effective airflow velocity of a rotor blade element varies with the distance from the rotor shaft axis, because the...

Accepted Answer

Peripheral speed increases if the displacement to the rotor blade tip decreases

Answer

Helicopter airframe disturbs the airflow

Answer

Tangential force and airflow reversal vary

Answer

Drag force in direction of the rotation axis is increased

Question 2

The transitional lift can be noticed by...

Accepted Answer

Vibrations.

Answer

An aural warning.

Answer

Strong load factors.

Answer

A loss of engine rpm.

Question 3

A helicopter with a rotor turning in an anti-clockwise direction seen from above, hovers sideways to the right. What is the azimuth angle where the main rotor blades have the biggest pitch angle?

Accepted Answer

180°

Answer

270°

Answer

90°

Answer

0°

Question 4

Which action best supports safe management of tip-path plane?

Accepted Answer

Use cyclic to tilt it for control.

Answer

Delay the decision until after take-off.

Answer

Use the item only if requested by passengers.

Answer

Ignore it when the helicopter has sufficient fuel.

Question 5

The reason for a stall at a given pitch angle can be...

Accepted Answer

Smaller vertical airflow through the rotor and constant peripheral speed

Answer

Constant peripheral speed and great vertical airflow through the rotor

Answer

Smaller effective angle of attack and small peripheral speed

Answer

Smaller frontal resistance and turbulent airflow

Question 6

Which statement about cyclic pitch is correct?

Accepted Answer

It tilts the rotor disc to control movement around pitch and roll axes.

Answer

It changes all blade pitch equally.

Answer

It controls fuel flow only.

Answer

It is used only after shutdown.

Question 7

What happens to thrust and tangential force if the rotor RPM decreases by about 10 % in cruise flight?

Accepted Answer

The thrust and the tangential force decrease

Answer

The thrust and the tangential force increase

Answer

The thrust decreases and the tangential force remains constant

Answer

The thrust remains constant and the tangential force increases

Question 8

Which statement about retreating blade stall is correct?

Accepted Answer

It is associated with high forward speed, high gross mass, turbulence or high density altitude.

Answer

It occurs only while parked.

Answer

It affects only the advancing blade first.

Answer

It is prevented by exceeding VNE.

Question 9

Which action best supports safe management of effective translational lift?

Accepted Answer

Expect performance and attitude changes during acceleration.

Answer

Delay the decision until after take-off.

Answer

Use the item only if requested by passengers.

Answer

Ignore it when the helicopter has sufficient fuel.

Question 10

What is the reason for retreating blade stall?

Accepted Answer

Large pitch angle and small effective airflow

Answer

Large centrifugal forces of the peripheral speed

Answer

Small cone angle and constant peripheral speed

Answer

Small pitch angle and large effective airflow

Exam questions Principles of Flight (Helicopter) - PPL(H) - Private Pilot Licence (Helicopter)

PPL(H) - Private Pilot Licence (Helicopter): Principles of Flight (Helicopter) 10 Questions no time limit

Exam questions Principles of Flight (Helicopter) - PPL(H) - Private Pilot Licence (Helicopter)

PPL(H) - Private Pilot Licence (Helicopter): Principles of Flight (Helicopter) 10 Questions no time limit

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