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

Test 10 domande PPL(A) English - Private Pilot License (Aircraft) - Principle of Flight, tempo libero

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1 - Which point on the aerofoil is represented by number 3? See figure (PFA-009) (1,00 P.) Siehe Anlage 2

Separation point Center of pressure Stagnation point Transition point

2 - The ratio of span and mean chord length is referred to as... Trapezium shape. Tapering Aspect ratio. Wing sweep.

3 - What kind of drag is NOT part of the parasite drag? Interference drag Skin-friction drag Induced drag Form drag

4 - Which effect does a decreasing airspeed have on the induced drag during a horizontal and stable cruise flight? The induced drag will increase The induced drag will collapse The induced drag will remain constant The induced drag will slightly decrease

5 - The laminar boundary layer on the aerofoil is located between... The transition point and the separation point. The stagnation point and the transition point. The transition point and the center of pressure The stagnation point and the center of pressure

6 - After an engine failure, the windmilling propeller... Generates neither thrust nor drag. Has a greater pitch in feathered position Generates drag rather than thrust. Improves the properties of the glide

7 - Pressure drag, interference drag and friction drag belong to the group of the... Induced drag Parasite drag. Main resistance Total drag

8 - What pressure pattern can be observed at a lift-generating wing profile at positive angle of attack? Low pressure is created above, higher pressure below the profile High pressure is created above, lower pressure below the profile Pressure above remains unchanged, higher pressure is created below the profile Pressure below remains unchanged, lower pressure is created above the profile

9 - What leads to a decreased stall speed Vs (IAS)? Lower altitude Lower density Higher load factor Decreasing weight

10 - The center of pressure is the theoretical point of origin of... Only the resulting total drag. All aerodynamic forces of the profile Gravity forces of the profile Gravity and aerodynamic forces

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