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Home > Training for exam quizzes ATPL, PPL(A), PPL(H), BPL Hot Air, BPL Gas, SPL - Sailplane, EASA Drone, FAA Drone > Principles of Flight (Helicopter) - PPL(H) - Private Pilot License

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

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1 - What shape of a rotor blade has a positive impact on the lift distribution? Rectangular blade with a geometric setting of 1° Double trapezoidal rotor blade with a radius at the blade tip Trapezoidal blade without radius at the blade tip Rectangular trapezoidal blade with no aerodynamic twist

2 - Which option describes the term "asymmetric airflow"? During cruise flight the advancing rotor blade has more airflow than the retreating rotor blade The displacement of the driving forces to the advancing rotor blade in a vertical autorotation The difference in required performance during hover in and out of ground effect The greater lift in the outer region of the rotor as opposed to the inner region

3 - Why does a flare during an autorotation generate higher rotor RPM? The pitch angle increases The vertical airflow through the rotor disc increases The tangential force tilts backwards The ground effect leads to better performance

4 - What force affects the braking torque of the rotor in cruise? Inclined forward lift Upward directional rotor thrust Inclined forward drag force Inclined rearward tangential force

5 - What is caused by an increase of stability in a helicopter? An optimization of the maximum helicopter mass An enhance of control under negative load factors A decrease of the required control forces An increase of general flight safety

6 - What needs to be observed in conjunction with a temporary loss of tail rotor efficiency in a stationary hover? Vortex ring stage of the tail rotor Rotating movement in the main rotor direction Loss of the main rotor thrust Mechanical blockage of the control

7 - The ground effect is noticeable by... Strong vertical oscillations. Strong horizontal vibrations. Larger power requirements. Lower power requirements.

8 - During an autorotation a helicopter accelerates from 60 to 90 knots without further corrections. The rotor RPM will... Remain constant. Decrease. Vary. Increase.

9 - What action has no effect on the rotor RPM in an autorotation? Utilisation of friction brake. Centre of gravity displacement. Pitch angle change. Transition into a turning flight.

10 - What shall be considered before terminating a turn in an autorotation? The Coriolis force causes an increase in the main rotor rpm The pitch angle must be decreased by using the collective pitch lever again The decreasing gravity relieves the main rotor and the helicopter cabin The flight velocity shall be increased to obtain all the kinetic energy

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