Dynamics' of flightMazen Mohamed tarek presented to :Dr,Mohamed abassy Class : 16 registration

number :15102131

Contents

What is air ? How wings lift the plane . Laws of motion . Forces of flight . Regimes of Flight .

What is air? Air is a physical substance which has

weight . Moving air has force . Hot air expands and spreads out and it

becomes lighter than cool air . In 1640, Evagelista Torricelli discovered that

air has weight. When experimenting with measuring mercury, he discovered that air put pressure on the mercury .

How wings lift the plane?

air moves faster, the pressure of the air decreases. So the pressure on the top of the wing is less than the pressure on the bottom of the wing. The difference in pressure creates a force on the wing that lifts the wing up into the air.

Laws of motion Sir Isaac Newton proposed three laws of

motion in 1665. These Laws of Motion help to explain how a planes flies .

1. If an object is not moving, it will not start moving by itself. If an object is moving, it will not stop or change direction unless something pushes it .

2. Objects will move farther and faster when they are pushed harder .

3. When an object is pushed in one direction, there is always a resistance of the same size in the opposite direction .

Forces of flight

Four forces of flight

Lift - upward Drag - backwardWeight - downwardThrust - forward

Sound BarrierSound is made up of molecules of air that move

When a plane travels the speed of sound the air waves gather together and compress the air in front of the plane to keep it from moving forward. This compression causes

a shockwave to form in front of the plane

Regimes of Flight• Sometimes called speeds of flight, each

regime is a different level of flight speed.

Seaplane

General Aviation (100-350 MPH.)

Boeing 747

Subsonic (350-750 MPH.)

Regimes of Flight

Concorde

Supersonic (760-3500 MPH - Mach 1 - Mach 5).

Space Shuttle

Hypersonic )3500-7000 MPH - Mach 5 to Mach 10(.

Thank you ….,,