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Q&A Forum

1106 questions found

Module 14. Propulsion

A compressor shaft rotates on

  • sintered bearings
  • ball and roller bearings
  • plain bearings
Spaceresearcher asking:

What about Needle Roller bearings, those are not balls?

Module 17. Propeller

When a propeller is removed, the securing parts are kept with

  • all separately in cases.
  • the propeller.
  • the engine.
bigbear asking:

WHY NOT KEEP WITH PROPELLER?

Module 12. Helicopter aerodynamics, structures and systems

If the pitot and static pipe lines were cross connected at the instrument panel connection, application of pressure to the pitot head would cause the

  • altimeter reading to increase, vertical speed indicator to indicate descent.
  • altimeter reading to decrease, vertical speed indicator to indicate descent.
  • altimeter reading to decrease, vertical speed indicator to indicate climb.
Majorkidkid asking:

why?

Module 6. Materials & hardware

What is the small hole on a swaged turnbuckle for?

  • To check for moisture deposits.
  • To check if correct amount of cable has been inserted before swaging.
  • To alloy the turnbuckle to be wire locked.
saifulsayd asking:

why the answer is not to allow the turnbuckle to be wire lock?

Module 6. Materials & hardware

An aluminium alloy bolt may be identified by

  • its colour (dyed black).
  • the letter A stamped on the head.
  • its colour (dyed green).
saifulsayd asking:

Really?? not the letter A stamped on the head?

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