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Home > Training for exam quizzes ATPL, PPL(A), PPL(H), BPL Hot Air, BPL Gas, SPL - Sailplane, EASA Drone, FAA Drone > Principles of Flight (Aeroplane) - Quiz SPL - Sailplane Pilot License

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

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

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1 - During a stall, the lift... Decreases and drag increases. Increases and drag increases. Decreases and drag decreases Increases and drag decreases.

2 - How does a laminar boundary layer differ from a turbulent boundary layer? The laminar boundary layer is thinner and provides more skin-friction drag The turbulent boundary layer can follow the airfoil camber at higher angles of attack The laminar boundary layer produces lift, the turbulent boundary layer produces drag The turbulent boundary layer is thicker and provides less skin-friction drag

3 - Which statement about the airflow around an aerofoil is correct if the angle of attack increases? The stagnation point moves down The center of pressure moves down The center of pressure moves up The stagnation point moves up

4 - What is the advantage of differential aileron movement? The drag of the downwards deflected aileron is lowered and the adverse yaw is smaller The total lift remains constant during aileron deflection The ratio of the drag coefficient to lift coefficient is increased The adverse yaw is higher

5 - Rotation around the vertical axis is called... Slipping. Pitching. Yawing. Rolling.

6 - In which way does the position of the center of pressure move at a positively shaped profile with increasing angle of attack? It moves to the wing tips It moves forward until reaching the critical angle of attack It moves forward until reaching the critical angle of attack It moves forward first, then backward

7 - What is the function of the static rudder balance? To prevent control surface flutter To trim the controls almost without any force To increase the control stick forces To limit the control stick forces

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

question PFA-003.jpg

Lift angle. Angle of attack. Angle of incidence. Angle of inclination

9 - Which point on the aerofoil is represented by number 3? See figure (PFA-009) Siehe Anlage 2

question PFA-009.jpg

Stagnation point Separation point Center of pressure Transition point

10 - Which of the following options is likely to produce large induced drag? Large aspect ratio Small aspect ratio Low lift coefficients Tapered wings

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