Category Archives: Principals of Flight

Principals of Flight

Which of the following statements about the stall of a straight wing aeroplane is correct?

A: Buffeting is the result of tailplane flow separation..
B: Just before the stall the aeroplane will be have an increased nose down tendency.
C: The nose down effect is the result of increasing downwash, due to flow separation.
D: The horizontal tail will stall at a higher speed than the wing.

 

 

 

 

 

 

 

 

Answer: B

Which of the following statements about a Mach trimmer is correct?

A: A Mach trimmer corrects the change in stick force stability of a swept wing aeroplane above a certain Mach number.
B: A straight wing aeroplane always needs a Mach trimmer for flying at Mach numbers close to MMO.
C: A Mach trimmer reduces the stick force stability of a straight wing aeroplane to zero at high Mach numbers.
D: The Mach trimmer corrects the natural tendency of a swept wing aeroplane to pitch up.

 

 

 

 

 

 

 

 

Answer: A