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

Question 1

Which action best supports safe management of flapping hinge function?

Accepted Answer

Understand its role in rotor dynamics.

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 2

Why is anti-torque demand important for a PPL(H) flight?

Accepted Answer

It generally increases as power and torque increase.

Answer

It is relevant only to airline transport operations.

Answer

It can be ignored when the flight remains local.

Answer

It is replaced by passenger preference.

Question 3

Which statement about blade flapping is correct?

Accepted Answer

It helps compensate for dissymmetry of lift.

Answer

It prevents all rotor RPM changes.

Answer

It is used only for braking after shutdown.

Answer

It is unrelated to forward flight.

Question 4

Which statement about translational lift is correct?

Accepted Answer

It improves rotor efficiency as the helicopter moves into cleaner horizontal airflow.

Answer

It occurs only when stationary in a hover.

Answer

It reduces all lift instantly.

Answer

It is a radio navigation term.

Question 5

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 6

What is the usual trade-off when helicopter stability is increased?

Accepted Answer

Reduced manoeuvrability and controllability.

Answer

A decrease in general aviation safety.

Answer

An increase in maximum permitted helicopter mass.

Answer

Improved control under negative load factors.

Question 7

What is the reason for the driving forces in an autorotation?

Accepted Answer

Downward tilted effective airflow

Answer

Low rate of descent

Answer

Increased pitch angle

Answer

High airspeeds

Question 8

Why does a stall begin on the retreating rotor blade at high cruise speeds?

Accepted Answer

The large pitch angle and relatively low peripheral speed cause a large effective angle of attack

Answer

The airflow reaches subsonic speed and causes an increase of the induced drag

Answer

The small pitch angle and a relatively low peripheral speed cause a small effective angle of attack

Answer

The airflow reaches supersonic speed and causes an increase of the parasite drag

Question 9

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 10

Which statement about torque reaction is correct?

Accepted Answer

The fuselage tends to rotate opposite to main rotor torque unless balanced.

Answer

It is a GPS position error.

Answer

It affects only gliders.

Answer

It is eliminated by changing QNH.

Question 11

What is the correct way to counteract the vortex ring state?

Accepted Answer

Try to gain airspeed and enter autorotation

Answer

Raise collective and decrease rotor RPM

Answer

Raise collective and pull back the stick

Answer

Open throttle and pull back the stick

Question 12

Why do helicopters with a semi-rigid rotor system react slower than others?

Accepted Answer

The central flapping hinge does not transmit any moments

Answer

The missing lag hinges cause a rotor imbalance

Answer

The lowered attachment of the rotor blades allows a transmission of forces

Answer

The angled lag hinges prevent the transmission of aerodynamic forces on the helicopter frame

Question 13

Which statement about ground effect is correct?

Accepted Answer

It reduces induced flow and power required when hovering close to the surface.

Answer

It increases power required compared with OGE hover.

Answer

It is strongest at high altitude cruise.

Answer

It affects only fixed-wing aircraft.

Question 14

Which energies serve to maintain the rotor rpm in an autorotation?

Accepted Answer

Potential or kinetic energy

Answer

Mechanical or chemical energy

Answer

Rotational and linear energy

Answer

Frictional and flow energy

Question 15

Why is a helicopter's climb initially accelerated after an increase of the pitch angle?

Accepted Answer

The inertia of the air increases the effective angle of attack temporarily until an additional component of the climb rate reduces the effective angle of attack again

Answer

The larger pitch angle causes a decrease and a compression of the airflow until the climb rate corresponds to the induced velocity through the main rotor disc

Answer

The initially high airflow increases the rotor thrust until the lower air density reduces the rotor thrust again

Answer

The conversion of energetic air into kinetic rotor energy decreases continuously with increasing density altitude

Question 16

Which statement about tail rotor thrust is correct?

Accepted Answer

It balances main rotor torque and provides yaw control.

Answer

It provides all vertical lift.

Answer

It measures density altitude.

Answer

It replaces cyclic control.

Question 17

Why is transverse flow effect important for a PPL(H) flight?

Accepted Answer

It can produce vibration and attitude changes during acceleration.

Answer

It is relevant only to airline transport operations.

Answer

It can be ignored when the flight remains local.

Answer

It is replaced by passenger preference.

Question 18

What aerodynamic effect is most relevant? The pilot raises collective rapidly.

Accepted Answer

torque and power required increase.

Answer

The altimeter setting becomes invalid.

Answer

The magnetic compass becomes the primary lift source.

Answer

The aircraft mass automatically decreases.

Question 19

Which statement about dynamic rollover is correct?

Accepted Answer

It can develop when the helicopter pivots around a skid or wheel with rolling moment.

Answer

It occurs only at high altitude cruise.

Answer

It is impossible on sloping ground.

Answer

It is prevented by increasing collective rapidly.

Question 20

Which statement about best rate of climb speed is correct?

Accepted Answer

It gives the greatest altitude gain per unit time under the specified conditions.

Answer

It is always zero airspeed.

Answer

It is the speed for minimum fuel flow in every case.

Answer

It is a radio frequency.

Question 21

Which action best supports safe management of driven region of the rotor?

Accepted Answer

Balance rotor RPM using collective.

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 22

The pitch angle of a tail rotor blade is changed...

Accepted Answer

Collectively

Answer

Cyclically

Answer

Symmetrically

Answer

Asymmetrically

Question 23

Which statement about mast bumping is correct?

Accepted Answer

It is a hazard associated with some teetering rotor systems under low-G or abrupt control conditions.

Answer

It is an altimeter calibration method.

Answer

It occurs only after shutdown.

Answer

It is solved by applying rotor brake in flight.

Question 24

Which action best supports safe management of disc loading?

Accepted Answer

Consider mass and rotor disc area when assessing performance.

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 25

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 26

What causes the phase lag between the displacement and the flapping of a rotor blade?

Accepted Answer

Inertia, mass, and aerodynamic forces

Answer

Rounding of the rotor blade tips

Answer

Friction in the rotor blade spindles

Answer

Advance or retreat angle of 90°

Question 27

Why is hover ceiling important for a PPL(H) flight?

Accepted Answer

It depends on mass, density altitude, wind and power available.

Answer

It is relevant only to airline transport operations.

Answer

It can be ignored when the flight remains local.

Answer

It is replaced by passenger preference.

Question 28

The rotor thrust is...

Accepted Answer

Perpendicular to the tip path plane

Answer

Opposite to the rotation of the rotor blade element

Answer

Parallel with the main rotor shaft

Answer

Perpendicular to the hub plane

Question 29

Which statement about induced drag is correct?

Accepted Answer

It is associated with producing lift.

Answer

It is caused only by wheel brakes.

Answer

It decreases to zero in all climbs.

Answer

It is a magnetic compass error.

Question 30

Which action best supports safe management of blade pitch increase?

Accepted Answer

Monitor rotor RPM and engine limits.

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 31

Which statement about the rotor disc loading in a horizontal curve is correct?

Accepted Answer

It increases with increasing bank angle

Answer

It decreases with increasing bank angle

Answer

No change in relation to the cruise flight

Answer

Effects depend on the type of helicopter

Question 32

Which landing site (no wind) prevents the impairment of the ground effect?

Accepted Answer

Plain terrain

Answer

Narrow forest glade

Answer

Elevated helipad

Answer

Sloping ground

Question 33

What needs to be observed in conjunction with a temporary loss of tail rotor efficiency in a stationary hover?

Accepted Answer

Vortex ring state of the tail rotor

Answer

Rotating movement in the main rotor direction

Answer

Loss of the main rotor thrust

Answer

Mechanical blockage of the control

Question 34

Which statement about coning is correct?

Accepted Answer

It is the upward bending of rotor blades due to lift and centrifugal force balance.

Answer

It is a radio navigation procedure.

Answer

It is caused by altimeter error.

Answer

It is the same as tail rotor drift.

Question 35

Which statement about LTE is correct?

Accepted Answer

Loss of tail rotor effectiveness is an uncommanded yaw condition that can occur in susceptible conditions.

Answer

It is a type of VOR radial.

Answer

It improves hover controllability.

Answer

It is prevented by ignoring wind direction.

Question 36

Why is tail rotor drift important for a PPL(H) flight?

Accepted Answer

Sideways force may require cyclic correction in hover.

Answer

It is relevant only to airline transport operations.

Answer

It can be ignored when the flight remains local.

Answer

It is replaced by passenger preference.

Question 37

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 38

Which action best supports safe management of tail rotor drift?

Accepted Answer

Anticipate drift during hover and lift-off.

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 39

What shape of a rotor blade has a positive impact on the lift distribution?

Accepted Answer

Double trapezoidal rotor blade with a radius at the blade tip

Answer

Rectangular blade with a geometric setting of 1°

Answer

Trapezoidal blade without radius at the blade tip

Answer

Rectangular trapezoidal blade with no aerodynamic twist

Question 40

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 41

Which action best supports safe management of hover ceiling?

Accepted Answer

Check performance data before operating near limits.

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 42

Why is tip-path plane important for a PPL(H) flight?

Accepted Answer

It represents the plane traced by the rotor blade tips.

Answer

It is relevant only to airline transport operations.

Answer

It can be ignored when the flight remains local.

Answer

It is replaced by passenger preference.

Question 43

Why is disc loading important for a PPL(H) flight?

Accepted Answer

It affects induced velocity and hover power required.

Answer

It is relevant only to airline transport operations.

Answer

It can be ignored when the flight remains local.

Answer

It is replaced by passenger preference.

Question 44

What aerodynamic effect is most relevant? A skid contacts an obstacle during lift-off.

Accepted Answer

dynamic rollover risk may increase.

Answer

The altimeter setting becomes invalid.

Answer

The magnetic compass becomes the primary lift source.

Answer

The aircraft mass automatically decreases.

Question 45

Why is blade pitch increase important for a PPL(H) flight?

Accepted Answer

It increases angle of attack and power required.

Answer

It is relevant only to airline transport operations.

Answer

It can be ignored when the flight remains local.

Answer

It is replaced by passenger preference.

Question 46

During an autorotation the airspeed is limited by...

Accepted Answer

The drift of the driving forces on the returning blade

Answer

The displacement of the stall regions in the inner area of the rotor blade

Answer

The interference drag during low rates of descent

Answer

The landing gear during the touchdown

Question 47

What aerodynamic effect is most relevant? Forward speed approaches the never-exceed speed.

Accepted Answer

retreating blade stall and structural limits become important.

Answer

The altimeter setting becomes invalid.

Answer

The magnetic compass becomes the primary lift source.

Answer

The aircraft mass automatically decreases.

Question 48

Which of the following options has an effect on the autorotation characteristics?

Accepted Answer

Helicopter mass and density altitude

Answer

Smoothly working tail rotor control and low RPM warning systems

Answer

Air temperature and wind speed

Answer

Pressure altitude and wind speed

Question 49

What kind of drag is caused by a lift-producing aerofoil?

Accepted Answer

Induced drag

Answer

Parasite drag

Answer

Frictional drag

Answer

Interference drag

Question 50

Which option describes the term "asymmetric airflow"?

Accepted Answer

During cruise flight the advancing rotor blade has more airflow than the retreating rotor blade

Answer

The displacement of the driving forces to the advancing rotor blade in a vertical autorotation

Answer

The difference in required performance during hover in and out of ground effect

Answer

The greater lift in the outer region of the rotor as opposed to the inner region

Question 51

Which of the stated relationships between lift and drag applies best for a flying helicopter (lift: drag)?

Accepted Answer

45: 1

Answer

1: 45

Answer

1: 2

Answer

2: 1

Question 52

What aerodynamic effect is most relevant? Rotor RPM starts to decay in autorotation.

Accepted Answer

collective should be managed to recover RPM.

Answer

The altimeter setting becomes invalid.

Answer

The magnetic compass becomes the primary lift source.

Answer

The aircraft mass automatically decreases.

Question 53

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 54

What aerodynamic effect is most relevant? Density altitude increases.

Accepted Answer

rotor thrust and engine performance margins normally decrease.

Answer

The altimeter setting becomes invalid.

Answer

The magnetic compass becomes the primary lift source.

Answer

The aircraft mass automatically decreases.

Question 55

What relieves the helicopter in a low G manoeuvre?

Accepted Answer

Increased vertical airflow through the rotor

Answer

Weightlessness of the passengers during the push over

Answer

Rolling movement of the helicopter to the right

Answer

Centrifugal force in parabolic flight during the entire manoeuvre

Question 56

Which statement about autorotation is correct?

Accepted Answer

The rotor is driven by upward airflow through the rotor disc after power loss or power reduction.

Answer

The rotor is driven by the starter motor throughout descent.

Answer

The rotor brake is applied in flight.

Answer

Lift is produced only by the tail rotor.

Question 57

The helicopter's stability is increased by...

Accepted Answer

Attaching a stabilizer

Answer

Reducing the rotor RPM

Answer

Pivoting the drag hinge

Answer

Decreasing the rotor mass

Question 58

Which statement about vortex ring state is correct?

Accepted Answer

It can occur with high rate of descent, low forward speed and power applied.

Answer

It occurs only with the engine stopped.

Answer

It is prevented by increasing collective indefinitely.

Answer

It is a compass turning error.

Question 59

Why is effective translational lift important for a PPL(H) flight?

Accepted Answer

It improves rotor efficiency as airflow becomes more horizontal and less recirculated.

Answer

It is relevant only to airline transport operations.

Answer

It can be ignored when the flight remains local.

Answer

It is replaced by passenger preference.

Question 60

The beam theory enables statements about the...

Accepted Answer

Power requirements during hover flight

Answer

Energy conversion in an autorotation

Answer

Transition lift close to the ground

Answer

Drag in cruise flight

Question 61

The ground effect is noticeable by...

Accepted Answer

Lower power requirements

Answer

Strong vertical oscillations

Answer

Strong horizontal vibrations

Answer

Larger power requirements

Question 62

Which statement about settling with power is correct?

Accepted Answer

It is associated with vortex ring state conditions.

Answer

It means the engine has failed completely.

Answer

It is caused by excessive QNH.

Answer

It improves climb performance.

Question 63

Vx is the speed...

Accepted Answer

For the best angle of climb

Answer

For the best rate of climb

Answer

To rotate

Answer

Never to be exceeded

Question 64

What aerodynamic effect is most relevant? The helicopter hovers out of ground effect on a hot day.

Accepted Answer

power margin may be reduced.

Answer

The altimeter setting becomes invalid.

Answer

The magnetic compass becomes the primary lift source.

Answer

The aircraft mass automatically decreases.

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

Exam simulation PPL(H) Helicopter Theory Exam Questions in English Principles of Flight (Helicopter) 120 questions on 120 minutes

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

Exam simulation PPL(H) Helicopter Theory Exam Questions in English Principles of Flight (Helicopter) 120 questions on 120 minutes

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