Aircraft Stability | PPL(A) Principles of Flight - EASA & UK CAA
Lateral and Directional stability
Section titled "Lateral and Directional stability"What are the symptoms of a "spiral dive"?
What is the stability around the longitudinal axis called?
What is the stability around the vertical axis called?
If the static directional stability is too high compared to static lateral stability, the aeroplane is prone to:
How do you recover from a spiral dive?
What does a spiral dive result from?
Static and dynamic longitudinal stability
Section titled "Static and dynamic longitudinal stability"Which of the following statements about the center of gravity (CG) margin is correct?
An aeroplane exhibits positive static longitudinal stability. If after having encountered a pitch up moment change, what moment does it generate?
What does an aft CG position mean?
Why is its dangerous if the CG falls aft of the aft limit?
What is the stability around the lateral axis called?
If the CG is situated aft of the aft limit, then:
What does a forward center of gravity (CG) mean?
An aeroplane exhibits negative static longitudinal stability If after entering an upward gust, what moment does it generate?
How does the aircraft become more stable in terms of static longitudinal stability?
What is the most important influencing factor of static longitudinal stability from the following list?
If the CG is in front of the forward limit, which of the following statements is correct?
Static and dynamic stability
Section titled "Static and dynamic stability"If an aeroplane exhibits positive dynamic stability, what is correct in terms of static stability?
What is the difference between static and dynamic stability?
If the center of gravity is aft of the center of pressure of an airfoil, what moment is generated by the wing?
What does the term "equilibrium of forces" practically mean in straight and level flight?
If the center of gravity is in front of the center of pressure of an airfoil, what moment is generated by the wing?
When would the aeroplane display negative dynamic stability?
How can longitudinal equilibrium be achieved if the center of pressure does not coincide with the center of gravity?
What does the term 'equilibrium' mean?
When does an aeroplane exhibit positive static stability?
When is neutral dynamic stability experienced?
When does an aeroplane display neutral static stability?
How can an increased pitch-up moment generated by the wing be balanced?
Why must the CG of the aeroplane be carefully calculated to fall between the limits?
When does an aeroplane display negative static stability?
How can the pilot reach longitudinal equilibrium other than moving a deflectable control surface?
What does positive static stability mean?
How can longitudinal equilibrium be achieved if the center of pressure coincides with the center of gravity?
What does the term 'equilibrium' mean practically?
How can we balance a reduced pitch-up moment generated by the wings?
What does negative static stability mean?
The AoA (angle of attack) was reduced in straight and level flight, how can we increase it back to the original AoA?