Helicopter Quiz

Helicopter at sunset
image: Civil Aviation Safety Authority

1. A low-inertia rotor system is characterised by:

  1. a large number of heavy blades
  2. a small number of heavy blades
  3. blades with tip weight
  4. modern lightweight composite blades

2. The certification delay time for the pilot to react and lower the collective in the cruise is to allow for the pilot to:

  1. be fully attentive at all times
  2. do other aircraft tasks and take time to recognise an engine failure
  3. always keep their hand on the collective
  4. not have to lower the collective

3. When the engine fails, rotor RPM will decrease due to:

  1. reducing forward airspeed
  2. no driving force to overcome blade drag
  3. the windmill effect
  4. the driven force

4. If a rotor system RPM is allowed to decrease:

  1. the glide can be stretched
  2. the endurance can be increased
  3. the RPM may not recover and ‘stall’
  4. the aircraft is more controllable

5. In steady state autorotation, the rotor RPM is maintained by:

  1. the windmill effect
  2. the forward airspeed
  3. the engine
  4. the air coming down through the disc

6. Lowering the collective will cause the rotor disc to:

  1. decrease RPM
  2. flap back
  3. maintain RPM
  4. flap forward

7. In autorotation, decreasing airspeed will cause the disc to:

  1. decrease RPM
  2. flap back
  3. maintain RPM
  4. flap forward

8. Entry to autorotation requires the coordinated use of:

  1. collective
  2. throttle
  3. collective and pedal
  4. collective and cyclic

9. The speed at which an engine failure occurs affects:

  1. how much cyclic flare is required
  2. what the steady state autorotation decent rate is
  3. what the autorotation range is
  4. how much the collective needs to be lowered

10. The control utilised to maintain rotor RPM in steady state autorotation is:

  1. pedal
  2. cyclic
  3. collective
  4. throttle



  1. (d)
  2. (b)
  3. (b)
  4. (c)
  5. (a)
  6. (d)
  7. (d)
  8. (d)
  9. (a)
  10. (c)