Fundamental forces acting on the plane

The first

leverage Lift Force and one of the four major forces that affect the 

.plane, as has been mentioned above how to generate this power

The second

 Weight: Weight is a force inversion leverage because it affects the direction of contrasts leverage, must be overcome on the weight of the aircraft by lifting force generated by the wings, if the plane weighs 4.5 tons, the lifting force generated by the wings must be greater than 4.5 tons, so the plane can take off from the ground. You must be a wing design strong enough to lift the plane off the 

ground. 

The third

Payment: Thrust is the force that push the plane forward, created through inter payment, whether fans and one fan in the foreground or more on Alojnhho jet or a combination of both. 

The fourthly

Traction: Drag affect the entire plane is the fourth power of traction or disability, and generate any traction because the movement of fluid through the body Kaabor the plane in the air and cause friction because it must displace the fluid out of her way. Surface lifting the upper wing - for example - generates a lifting force is very good, but because of its sheer size, it also generates the amount is not significant traction, and for this reason, fighter planes and bombers be of wings narrow, and on the contrary; the aircraft spraying f which fly at slow speed Nspaa- may be of great wings and thick because of high leverage is more important than the amount of traction accompanying her. Traction in smaller aircraft through sleek aerodynamic design of the aircraft, and forms to 

facilitate sliding movement of the aircraft through the air.

Finally

The challenge is to establish aviation balance between these four powers. When the payment is the largest payment of traction increases the speed of the plane. And when the lifting force is greater than the power of the aircraft weight would go. And using "control surfaces" Control Surfaces and "payment systems" different pilot can Alkaptnan manages the process of balance between these forces four to change direction and speed, for example: pilot can reduce the momentum in order to slow down or drop, as it can reduce the "arm landing "the plane's wheels or landing Gear in the air stream and publish eyebrows landing on the wings Spoilers to increase traction which occurs with the effect of reducing the payment. Pilot can increase the payment and that by combining an arm landing and landing eyebrows either to increase .speed or to climb