L2 - Overview

Question 1

What type of stability is paired with each aircraft motion? and what are the associated control surfaces?

Answer 1

Longitudunal - Pitch - Elevators
Lateral - Roll - Ailerons
Directional - Yaw - Rudder

Question 2

What is the centre of pressure?

Answer 2

Same as centre of lift, the point at which the overall upwards force acts. This changes

Question 3

What is the aerodynamic centre for the wing?

Answer 3

The point at which moment remains constant for a range of angles of attack. Constant. About 1/4 of the wing chord

Question 4

Define Stability?

Answer 4

The tendancy to return to equilibrum after a perturbance.

Question 5

Describe trimmed flight?

Answer 5

When the sum of all forces and moments equal zero. Aircraft is in equilibrum.

Question 6

What is the difference between static and dynamic stability?

Answer 6

Static stability considers the aircrafts intial response after perturbance (tendancy to return to equilibrum) and Dynamic stability considers the motion changes over time.

Question 7

Describe neutral static stability?

Answer 7

When the aircaft hold its position after a disturbance.