What Causes an Airplane to Fly?What Causes an Airplane to Fly?

Test Your Knowledge !Test Your Knowledge !

Match term with letter.

Weight Drag Lift Thrust

A_______ B________ C________ D________

Newton’s Third LawNewton’s Third Law

For every action there is an equal and For every action there is an equal and opposite reaction.opposite reaction.

What does this have to do with flight?What does this have to do with flight?

ThrustThrust

The goal of a jet engine is to produce thrust.The goal of a jet engine is to produce thrust.

The engine pushes air molecules out the exhaust end of the turbine to generate a high speed jet of exhaust gas.

THRUST!

Thrust from the engine moves the airplane forward.

DragDrag

As the plane moves forward the air around it As the plane moves forward the air around it creates a force called creates a force called Drag.Drag.

Drag Drag resists the movement of the airplane.resists the movement of the airplane.

LiftLift

How does an airplane How does an airplane create lift?create lift?

We can look to our fine We can look to our fine feathered friends for feathered friends for the answerthe answer

LiftLift

Air moves faster over the wing than underneath it. Air moves faster over the wing than underneath it.

Because faster air exerts less pressure than Because faster air exerts less pressure than slower moving air………………………..slower moving air………………………..

LiftLift

…………………………....The pressure underneath the ....The pressure underneath the wings wings liftslifts the plane off the ground the plane off the ground

FlightFlight

To stay in level flight the following relationships To stay in level flight the following relationships must be true;must be true;

A) Lift = C) Weight A) Lift = C) Weight B) Thrust = D) DragB) Thrust = D) Drag

LinksLinks

For more great information go to For more great information go to www.howstuffworks.comwww.howstuffworks.com