The reason for sharp leading edged wings on high speed aircraft is to
•  enable the shockwave to be accurately positioned.
•  decrease wave drag.
•  decrease boundary layer.

max.steelame asking:
•  Please explain

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The atmospheric zone where the temperature remains fairly constant is called the
•  stratosphere.
•  ionosphere.
•  troposphere.

max.steelame asking:
•  Please explain

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To overcome ineffective control surface problems in the transonic region
•  an all moving tailplane may be used.
•  hydraulic powered elevators may be used.
•  Frise ailerons may be used.

max.steelame asking:
•  Please explain

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The conversion factor of litres to UK pints is
•  2.2.
•  1.76.
•  0.57.

yunjung asking:
•  Please write your question here.

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Upward and outward inclination of a mainplane is termed
•  dihedral.
•  sweep.
•  stagger.

Marcocom asking:
•  but dihedral is not only for the wings? mainplane is the airplane not the wings... please explain me.

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