Principles of Flight

1. Principles of Flight Chapter 3 – Stability and Control

2. Stability • An Aircraft must be stable in flight in order to perform well • Also we must be able to control the aircrafts movement.

3. Yaw Aircraft turns left or right

4. Controlling - Yaw • Using the rudder pedals the pilot moves the rudder left or right to change the aircrafts direction.

5. Pitch Aircrafts noses Up or Down

6. Controlling - Pitch • Moving the stick forwards/back lifts or lowers the aircrafts nose by generating more or less lift at the tail • It uses Elevators to do this

7. Roll Aircraft “twists”

8. Controlling - Roll • Moving the stick left/right rolls the aircraft by generating more lift on one side. • It does this by moving flaps known as Ailerons

9. Trimming • When an aircraft pitches involuntarily it needs to be trimmed. • Small flaps mounted on the Elevators called “Trimming tabs” jut out from the elevators to increase the camber. • Aileron and Rudder trimming is the same

10. Flaps • Flaps increase wing camber and/or area

11. Flaps • Flaps allow aircraft to fly safely at slow speeds • They are mounted on the inside of the wings and can hinge down to increase lift at slow speeds

12. Slats • Like flaps at the front of the wing • They slide out of the leading edge and are used at low speed • Positioned on leading edge of the wing