PPL Principals of Flight 03
Control
General
Section titled "General"1 / 6
Where are the three axes of the aeroplane located in?
2 / 6
What is the motion about the longitudinal axis called?
3 / 6
What is the motion about the lateral axis called?
4 / 6
What is the motion about the vertical axis called?
5 / 6
What is the longitudinal axis?
6 / 6
The pitch angle is the sum of which two angles?
Pitch control
Section titled "Pitch control"1 / 8
How can the angle of attack be changed?
2 / 8
By deflecting the elevator upwards, what happens?
3 / 8
While maintaining straight and level flight, what will happen if the elevator is progressively deflected upwards?
4 / 8
While maintaining straight and level flight, what will happen if the elevator is progressively deflected downwards?
5 / 8
Forward CG position also means:
6 / 8
The lift of the horizontal stabiliser is affected by:
__(1)__ the propwash (slipstream) and,
__(2)__ the downwash of the wing.
7 / 8
Leaving the ground effect, what happends to the downwash of the wing?
8 / 8
What does an aft CG position mean in stick forces and maneuverability?
Yaw control
Section titled "Yaw control"1 / 4
When deflecting the rudder left, (as seen from the cockpit) where does the nose of the aeroplane move?
2 / 4
How can one achieve a counter-clockwise yaw, as seen from the top of the aircraft?
3 / 4
How can one achieve a clockwise yaw seen from the top of the aircraft?
4 / 4
What does applying the rudder pedal only, and without any aileron input result in?
Roll control
Section titled "Roll control"1 / 4
What are ailerons are used for?
2 / 4
In the case of a crosswind take-off or landing, when is "aileron into the wind" used?
3 / 4
How will the control stick be moved to bank clockwise seen from the cockpit?
4 / 4
How is the control stick moved to bank counter-clockwise (as seen from the cockpit)?
Roll-yaw interaction
Section titled "Roll-yaw interaction"1 / 6
Adverse aileron yaw is caused by the fact that when the turn is started, the down going wing creates __(1)__ drag compared to the upward going one, so a yaw __(2)__ as/to the direction of the turn is experienced.
2 / 6
When starting a level left turn, the aeroplane is prone to yaw to the __(1)__ due to the so-called __(2)__.
3 / 6
Unless fitted with certain devices, adverse aileron yaw can be counteracted by:
4 / 6
What in-built device can be used to reduce the effect of adverse yaw?
5 / 6
How do differential ailerons work?
6 / 6
What is the working principle of Frise ailerons?
Means to reduce control forces
Section titled "Means to reduce control forces"1 / 5
Why may stick force reduction be necessary?
2 / 5
How can stick force reduction be achieved?
3 / 5
What is the working principal of a balance tab?
4 / 5
An anti-balance tab may be required for __(1)__ to __(2)__ stick force required to deflect under certain conditions.
5 / 5
What is the fundamental difference between a Flettner tab/servo tab and a balance tab?
Trimming
Section titled "Trimming"1 / 5
Why is trimming necessary?
2 / 5
If we need to apply a pulling force on the yoke, how shall we then trim it to relieve the stick force?
3 / 5
Which trim is usually the most important (used most often)?
4 / 5
Which option is correct concerning a trim tab?
5 / 5
Which of the following options is correct concerning a trim tab?