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

Question 1

Pressure drag, interference drag and friction drag belong to the group of the...

Accepted Answer

Parasite drag

Answer

Main resistance.

Answer

Induced drag.

Answer

Total drag.

Question 2

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

Accepted Answer

Camber line.

Answer

Thickness.

Answer

Chord.

Answer

Chord line.

Question 3

The aerodynamic rudder balance...

Accepted Answer

Reduces the control stick forces.

Answer

Reduces the control surfaces.

Answer

Delays the stall.

Answer

Improves the rudder effectiveness.

Question 4

What leads to a decreased stall speed Vs (IAS)?

Accepted Answer

Decreasing weight

Answer

Lower density

Answer

Lower altitude

Answer

Higher load factor

Question 5

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 6

What engine design at a Touring Motor Glider (TMG) results in least drag?

Accepted Answer

Engine and propeller mounted stowable on the fuselage

Answer

Engine and propeller mounted fix on the fuselage

Answer

Engine and propeller mounted fix at the aircraft's nose

Answer

Engine and propeller mounted fix at the horizontal stabilizer

Question 7

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

Accepted Answer

Separation point

Answer

Transition point

Answer

Stagnation point

Answer

Center of pressure

Question 8

How do lift and drag change when approaching a stall condition?

Accepted Answer

Lift decreases and drag increases

Answer

Lift and drag increase

Answer

Lift increases and drag decreases

Answer

Lift and drag decrease

Question 9

The ratio of span and mean chord length is referred to as...

Accepted Answer

Aspect ratio.

Answer

Trapezium shape.

Answer

Tapering.

Answer

Wing sweep.

Question 10

What pattern can be found at the stagnation point?

Accepted Answer

Streamlines are divided into airflow above and below the profile

Answer

The boundary layer starts separating on the upper surface of the profile

Answer

All aerodynamic forces can be considered as attacking at this single point

Answer

The laminar boundary layer changes into a turbulent boundary layer

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

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