Principles of Flight (Aeroplane) - SPL - Sailplane Pilot License

Question 1

Flying with speeds higher than the never-exceed-speed (vNE) may result in...

Accepted Answer

Flutter and mechanically damaging the wings.

Answer

Reduced drag with increased control forces.

Answer

An increased lift-to-drag ratio and a better glide angle.

Answer

Too high total pressure resulting in an unusable airspeed indicator.

Question 2

The angle (alpha) shown in the figure is referred to as... See figure (PFA-003) DoF: direction of airflow Siehe Anlage 3

Accepted Answer

Angle of attack.

Answer

Lift angle.

Answer

Angle of incidence.

Answer

Angle of inclination

Question 3

With regard to the forces acting, how can stationary gliding be described?

Accepted Answer

The sum of air forces compensates the gravity force

Answer

The sum of air forces acts along the direction of air flow

Answer

The sum the air forces acts along with the lift force

Answer

The lift force compensates the drag force

Question 4

Point number 5 in the figure indicates which flight state? See figure (PFA-008) Siehe Anlage 5

Accepted Answer

Slow flight

Answer

Best gliding angle

Answer

Inverted flight

Answer

Stall

Question 5

In case of a stall it is important to...

Accepted Answer

Decrease the angle of attack and increase the speed.

Answer

Increase the angle of attack and increase the speed.

Answer

Increase the angle of attack and reduce the speed.

Answer

Increase the bank angle and reduce the speed.

Question 6

All aerodynamic forces can be considered to act on a single point. This point is called...

Accepted Answer

Center of pressure.

Answer

Center of gravity.

Answer

Lift point.

Answer

Transition point.

Question 7

Rotation around the lateral axis is called...

Accepted Answer

Pitching.

Answer

Yawing.

Answer

Rolling.

Answer

Stalling.

Question 8

The center of pressure is the theoretical point of origin of...

Accepted Answer

All aerodynamic forces of the profile.

Answer

Only the resulting total drag.

Answer

Gravity forces of the profile.

Answer

Gravity and aerodynamic forces.

Question 9

What describes "wing loading"?

Accepted Answer

Weight per wing area

Answer

Wing area per weight

Answer

Drag per weight

Answer

Drag per wing area

Question 10

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 total lift remains constant during aileron deflection

Answer

The ratio of the drag coefficient to lift coefficient is increased

Answer

The adverse yaw is higher

Quiz Principles of Flight (Aeroplane) - SPL - Sailplane Pilot License

Test 10 Questions SPL - Sailplane Pilot License - Principles of Flight (Aeroplane), no time limit