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1106 questions found

Module 12. Helicopter aerodynamics, structures and systems

Solidity of the rotor is the ratio of the

  • blade area to disc area.
  • all up weight to blade area.
  • all up weight to disc area.
Jordi asking:

This question has a 100% wrong answer.It should be the opposite .The correct term is solidity=disk area/blade area.

Module 12. Helicopter aerodynamics, structures and systems

A redundant structure is

  • on-condition structure.
  • a safe-life structure.
  • a failsafe structure.
Jordi asking:

why not safe life?

Module 12. Helicopter aerodynamics, structures and systems

In straight and level flight, the forward air speed is controlled by the

  • cyclic stick and the throttle.
  • the cyclic stick and the collective lever.
  • collective lever and the throttle.
Jordi asking:

Shouldn't it be collective with throttle?

Module 8. Basic aerodynamics

An engine which produces an efflux of high speed will be

  • less efficient.
  • more efficient.
  • unaffected by efflux speed.
paulofly@yahoo.com asking:

Hi, what is high speed efflux?
Thanks

Module 12. Helicopter aerodynamics, structures and systems

A cold air unit allows for cabin temperatures to be

  • a little more than ambient air temperature.
  • lower than ambient air temperature despite compression heating.
  • same as ambient temperature, despite compression heating.
Jordi asking:

why not lower?It says cold air unit.

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