what is the force keeping planes in the air?

Answer 1

Controlled flight is achieved by the continued inbalances between four fources namely lift, thrust, weight and drag.

Lift and weight are mutually perpendicular and lift needs to be greater than the weight for the aircraft to be airborne.

Drag and thrust are mutually perpendicular, thrust needs to overcome drag for forward motion.

Answer 2

Lift

The faster the air travel the lower its pressure

As the air go underneath the wing, it gains pressure there

and air above the wing is less pressure than the air below the wing

and air pressure needs to be balance so the air tries to push the wing up to keep the pressure balanced

So it creates a lift this is called Coanda Effect


Also because of Law of Interaction: For Every action there is an opposite or equal reaction.

Answer 3

The sustentation is the answer,is the same in the wings of the birds,the change of circulation air on the top of the wings in the planes,differentes to under the wings of the cause the sustentation...force that keep the planes in the air....that's why the wings of the plane have this form....
anyway check this site..http://www.howstuffworks.com/airplane1.htm


regards

Answer 4

As mentioned in NASA website: "To overcome the weight force, airplanes generate an opposing force called lift. Lift is generated by the motion of the airplane through the air and is an aerodynamic force. "Aero" stands for the air, and "dynamic" denotes motion. Lift is directed perpendicular to the flight direction. The magnitude of the lift depends on several factors including the shape, size, and velocity of the aircraft. As with weight, each part of the aircraft contributes to the aircraft lift force. Most of the lift is generated by the wings. Aircraft lift acts through a single point called the center of pressure. The center of pressure is defined just like the center of gravity, but using the pressure distribution around the body instead of the weight distribution."

Answer 5

Upward buoyant forces keeps the ships floating in water. The plane also needs such upward force (which balance with their weight ) to remain floating in air. This lifting force is created by wings of aerofoil section . When rapidly moving air stream creates lower pressure at up side( due to curvature of the wing ) than pressure at down side of wings . The differential pressure creates the lift. Greater the speed , the more is the lift. That is why planes need to be moving at high speed to remain afloat in air.

Answer 6

it's called Lift, and it's the ortoganal component of the force (relative to the flow direction) obtained by the motion of a fluid (air) around a well shaped body (wing)
note that the parallel force to the fluid is called Drag, and every body create it

Air on the upper side of the wing move faster, and then for the Bernoulli Principle (more fast the speed, more less the pressure) u got a difference of pressures up and down...
so the wing and the airplane flies becouse there is lower pressure over it (not more pressure below!!!)

someone will reply to u that that difference of speed is due only to the shape of the wing: longher up, shorter down... but that's deatly wrong!!! also simmetrical wings create lift!!! u just need to change the pitch...

the reason is more complex. and it's based on difficult equations, many principles and some other things i dunno if u know or can understand... i don't think i can make a complete fluidinamics lesson on here... it could take one year college course... ;-)
tell me if the answer is enoth for u, or mail me if u want more explanations... i need to understand how deep i could go in the detials...

Answer 7

the shape of a planes wing is designed so that the air moves over the top of the wing faster than the bottom, this creates lower pressure at the top than at the bottom, the difference in pressure between the top and bottom creates a net upward lift.
The tilt of the wing also helps a bit but not much.

Answer 8

Lift:
Aerodynamics (shaping of objects that affect the flow of air, liquid or gas) is a branch of fluid dynamics concerned with the study of forces generated on a body in a flow. The solution of an aerodynamic problem normally involves calculating for various properties of the flow, such as velocity, pressure, density, and temperature, as a function of space and time. Understanding the flow pattern makes it possible to calculate or approximate the forces and moments acting on bodies in the flow. This mathematical analysis and empirical approximation form the scientific basis for heavier-than-air flight.


A profile of an aircraft wing.Aerodynamic problems can be classified in a number of ways. The flow environment defines the first classification criterion. External aerodynamics is the study of flow around solid objects of various shapes. Evaluating the lift and drag on an airplane, the shock waves that form in front of the nose of a rocket or the flow of air over a hard drive head are examples of external aerodynamics. Internal aerodynamics is the study of flow through passages in solid objects. For instance, internal aerodynamics encompasses the study of the airflow through a jet engine or through an air conditioning pipe.

Answer 9

Well, it seems I have done a mistake at first (planes - planets ... ), sorry ...
The force keeping planes in the air is called lift.
The wings are formed in a way that the air above them streams faster over the surface then the stream of air below them. Therfore an area of "low pressure" is generated on top of the wings and that creates the lift. If the difference between low and normal pressure is big enough the lift can carry enormous weights.

Answer 10

My guess could it incredibly is real god does infact carry onto the wings and while it needs to take off he provides it somewhat push and woooosssh up it is going.yet possibly it must be the wings and air preassure on the underbody,alongside with thrust of the jets pushing it to the course mandatory at super tension..