Theory of Flight

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Intended learning Objectives

After finishing this presentation, the student ‘will’ be able to explain how the airplane is able to produce sustained flight over thousands of miles. They will be able to provide the name of the principle behind flight, and how the principle is used, and give the 4 forces acting on the airplane at all times.

Forces cont.

Drag
The force which opposes the forward motion of the aircraft.

Gravity
Gravity is the force that pulls the aircraft towards the earth.

Thrust
Thrust is the force which opposes drag, for the aircraft to move forward, it “MUST” be greater than drag.


Lift
Created by the airfoil. It is what allows the aircraft to fly.
Created by the airfoil can be attributed to Bernoulli's Principle.
“an increase in the speed of the fluid occurs simultaneously with a decrease in pressure