Principles of Flight (Sailplane) - SPL - Sailplane Pilot Licence

Question 1

Which design feature can compensate for adverse yaw?

Accepted Answer

Differential aileron deflection

Answer

Wing dihedral

Answer

Full deflection of the aileron

Answer

Aileron trim

Question 2

Which kinds of drag contribute to total drag?

Accepted Answer

Induced drag and parasite drag

Answer

Interference drag and parasite drag

Answer

Induced drag, form drag, skin-friction drag

Answer

Form drag, skin-friction drag, interference drag

Question 3

Rotation around the lateral axis is called...

Accepted Answer

Pitching

Answer

Yawing

Answer

Rolling

Answer

Stalling

Question 4

Which statement describes a situation of static stability?

Accepted Answer

An aircraft distorted by external impact will return to the original position

Answer

An aircraft distorted by external impact will tend to an even more deflected position

Answer

An aircraft distorted by external impact will maintain the deflected position

Answer

An aircraft distorted by external impact can return to its original position by rudder input

Question 5

Which option states a benefit of wing washout?

Accepted Answer

At high angles of attack the effectiveness of the aileron is retained as long as possible

Answer

With the washout the form drag reduces at high speeds

Answer

Greater hardness because the wing can withstand more torsion forces

Answer

Structurally the wing is made more rigid against rotation

Question 6

How does aircraft weight affect the critical angle of attack?

Accepted Answer

Is independent of the weight

Answer

Decreases with forward centre of gravity position

Answer

Changes with increasing weight

Answer

Increases with backward centre of gravity position

Question 7

What is meant by "ground effect"?

Accepted Answer

Increase of lift and decrease of induced drag close to the ground

Answer

Decrease of lift and increase of induced drag close to the ground

Answer

Increase of lift and increase of induced drag close to the ground

Answer

Decrease of lift and decrease of induced drag close to the ground

Question 8

The angle of attack is the angle between...

Accepted Answer

The chord line and the oncoming airflow

Answer

The chord line and the longitudinal axis of an aeroplane

Answer

The wing and the fuselage of an aeroplane

Answer

The undisturbed airflow and the longitudinal axis of an aeroplane

Question 9

How is the balance of forces affected during a turn?

Accepted Answer

Lift force must be increased to compensate for the sum of centrifugal and gravitational force

Answer

A lower lift force compensates for a lower net force as compared to level flight

Answer

The horizontal component of the lift force during a turn is the centrifugal force

Answer

The net force results from superposition of gravity and centripetal forces

Question 10

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

Exam questions Principles of Flight (Sailplane) - SPL - Sailplane Pilot Licence

SPL - Sailplane Pilot Licence: Principles of Flight (Sailplane) 10 Questions no time limit

Exam questions Principles of Flight (Sailplane) - SPL - Sailplane Pilot Licence

SPL - Sailplane Pilot Licence: Principles of Flight (Sailplane) 10 Questions no time limit

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