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

1 - 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

2 - Which design feature can compensate for adverse yaw? Wing dihedral Full deflection of the aileron Aileron trim Differential aileron defletion

3 - Which statement about induced drag during the horizontal cruise flight is correct? Induced drag has a minimum at a certain speed and increases at higher as well as lower speeds Induced drag has a maximum at a certain speed and decreases at higher as well as lower speeds Induced drag increases with increasing airspeed Induced drag decreases with increasing airspeed

4 - Which point on the aerofoil is represented by number 4? See figure (PFA-009) (1,00 P.) Siehe Anlage 2

Center of pressure Separation point Transition point Stagnation point

5 - The change in pitch at a propeller blade from the root to the tip ensures... That the most thrust is produced at the blade tip That the most thrust is produced at the blade root A nearly constant load by a constant effective angle of attack over the entire length of the blade. The largest possible angle of attack at the blade tip

6 - "Longitudinal stability" is referred to as stability around which axis? Propeller axis Vertical axis Longitudinal axis Lateral axis

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

8 - How does a laminar boundary layer differ from a turbulent boundary layer? The laminar boundary layer produces lift, the turbulent boundary layer produces drag The turbulent boundary layer is thicker and provides less skin-friction drag 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

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

10 - Which statement concerning the angle of attack is correct? The angle of attack cannot be negative Increasing the angle of attack results in decreasing lift The angle of attack is constant throughout the flight A too large angle of attack may result in a loss of lift

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