Principle of Flight - PPL(A) - Private Pilot License

Question 1

Which point on the aerofoil is represented by number 1? See figure (PFA-009) (1,00 P.) Siehe Anlage 2

Accepted Answer

Stagnation point

Answer

Transition point

Answer

Center of pressure

Answer

Separation point

Question 2

What is the advantage of differential aileron movement?

Accepted Answer

The drag of the downwards deflected aileron is lowered and the adverse yaw is smaller

Answer

The ratio of the drag coefficient to lift coefficient is increased

Answer

The adverse yaw is highe

Answer

The total lift remains constant during aileron deflection

Question 3

Raise the nose to decrease airspeed

Accepted Answer

During recovery the ailerons should be kept neutral

Answer

Only very old aeroplanes have a risk of spinning

Answer

During recovery the ailerons should be crossed

Answer

During the spin the speed constantly increases

Question 4

Number 3 in the drawing corresponds to the... See figure (PFA-010) (1,00 P.) Siehe Anlage 1

Accepted Answer

Camber line

Answer

Chord

Answer

Thickness

Answer

Chord line.

Question 5

The pressure compensation between wind upper and lower surface results in ...

Accepted Answer

Induced drag by wing tip vortices.

Answer

Laminar airflow by wing tip vortices.

Answer

Profile drag by wing tip vortices.

Answer

Lift by wing tip vortices

Question 6

Differential aileron deflection is used to...

Accepted Answer

Keep the adverse yaw low

Answer

Avoid a stall at low angles of attack

Answer

Increase the rate of descent

Answer

Reduce wake turbulence.

Question 7

"Longitudinal stability" is referred to as stability around which axis?

Accepted Answer

Lateral axis

Answer

Propeller axis

Answer

Vertical axis

Answer

Longitudinal axis

Question 8

What structural item provides directional stability to an airplane?

Accepted Answer

Large vertical tail

Answer

Differential aileron deflection

Answer

Wing dihedral

Answer

Large elevator

Question 9

The bank in a two-minute turn (rate one turn) depends on the...

Accepted Answer

TAS

Answer

Weight

Answer

Wind

Answer

Load factor.

Question 10

What is the function of the static rudder balance?

Accepted Answer

To prevent control surface flutter

Answer

To trim the controls almost without any force

Answer

To increase the control stick forces

Answer

To limit the control stick forces

Quiz Principle of Flight - PPL(A) - Private Pilot License

Test 10 Questions PPL(A) - Private Pilot License - Principle of Flight, no time limit