How does an aircraft produces anti gravitational forces while taking off.?

Question

What are the components involved to produce antigraviaitional forces for an air craft to take off.
Air crafts have either two or one blower on each wing. How it functions to achieve negative forces.
How can I obtain theory behing this action?

Answer 1

It's all in the shape of the wings. The top of the wing is a curved surface and causes air turbulence above the wing and low pressure while the surface of the underside of the wing is flat and causes high pressure. The combination of the two forces acting together create lift and get the plane off the ground and into the air.

Answer 2

The aircraft wing is a very clever thing. It works on Bernoullis (if that spelling is correct) theory, which ultimately states that if a fluid is speeded up, it experiences a loss in pressure.

The upper surface of an aircrafts wing is curved (like half of Bernoullis Experiment), as before mentioned, and this causes the air passing over the upper surface to increase in velocity and to decrease in pressure. The air passing under the wing doesnt experience a loss in pressure relative to the air passing over the top surface. Like water and everything else, pressure flows from high to low, and thus the air passing under the wing lifts the wing up.

When the aircraft takes off, the pilot raises the nose of the aircraft, and an extra component to the lift theory called angle of attack increases the lift on the wing, causing the aircraft to become. It is difficult to explain this without the use of a picture!

The blowers you refer to are the aircraft engines and basically provide the aircraft with forward movement- to create the lift. This is the basic reason for engines, although on some aircraft, such as small single pistons (Cessna's and Piper's etc), the slipstream from the propellor creates airflow over the wing, even when there is little forward movement.

Why not do a search into Bernoullis theory and the lift formula :)

So essentially there are no 'anti-gravitational forces', just changing air pressures to create lift. But it does seem like magic- and it still fascinates me every time I fly!!

Answer 3

There are no anti gravitational forces that are created by an aircraft per se. Anti gravity would be able to work merely by overcoming earth's gravitational pull. Aircraft really never overcome gravity, if they did, they would be able to keep going higher and higher until they escape the atmosphere, They cannot, they eventually reach an altitude where their wings create no more lift in the thin air. Aircraft have either rotating wings (helocopters) or fixed wings. By moving these wings through the air (thrust), usually by a engine, (jet or propellor) the wings (which have a built in curvature) lift is created by low pressure air (slower air) on top of the wing is created while higher pressure air (faster air) is created below the surface of the wing, cause the wing to rise, taking the aircraft with it...the aircraft flies if all this works, and it will fly as long as lift and thrust exceeds weight (a function of mass and Gravity) and air resistance (drag)

Answer 4

Those forces are produced by the energy produced in the dilithium crystals, a component of aviation fuel. The energy thus obtained is reflected off double concave klystron tubes which have the effect of negating the gravitational attraction of everything within a 50 m radius, as well as providing the thrust forward needed to proceed through the atmosphere. One of the side effects of this system is the danger that the energy flow may fail in the ON position, in which case getting down to earth again can be a real problem. I had this happen one time and was forced to release the power system by explosive bolts so I could use the wings to glide to a safe landing. That is really their only purpose; to act as a safety factor when the anti gravitational system must be discarded.......

Answer 5

An aircraft does not produce anti gravitational forces......if it is fixed wing , eg a common air plane...it requires a runaway which will provide lift when at the appropriate speed...this is due to the shape of the wings, it is a common example of Bernoulli's theorem. If the aircraft happens to be a helicopter, it lifts due to direct thrust below...( please note that the tail rotor serves no purpose other than preventing the main body spinning the other way as per newtons laws...).

Final answer to your question....there are air crafts with 4 engines on each wing...this item is not pertinent...research Bernoulli and voila.......... ( eureka for you )

Answer 6

Steve is correct, but the "blowers" walk around in the cabin serving drinks to those who pay for they dilithuim crystal fuel. They act as blowers only when they enter the cockpit on a long haul flights. Sometimes they even act as blowers after the aircraft has stopped and the crew is at the hotel where many negative and positive forces are created.

Answer 7

And a little more. High pressure seeks low pressure. The high pressure under the wing tries to get to the low pressure above the wing, pushing up.

The reason why there is a pressure difference is because the top and bottom of the wing are shaped differently. The same amount of air has to pass over a longer distance on top of the wing, decreasing the pressure.

"From the Ground Up" is a good book on the basics of flying.

Answer 8

the "blower" you mentioned causes the aircraft to accelerate forward. this increasing forward motion creates "lift" in the wings which are designed with bigger area in the upper surface than the bottom. this design produces a negative pressure on the upper portion when accelaration is achieved thus lifting the whole aircraft into the air. try reading on "theories of flight".

Answer 9

There are 4 forces which help an aeroplane to fly.gravity, lift, drag and thrust.lift is the force that pushes the plane upwards against gravity.it is created by wings. when a plane is propelled forward by jet or propeller then air passes through the bottom and top of the wings.wings are shaped as aerofoil. at bottom of plane air pressure is same but at top it is reduced due to the shape. thus it gets lifted upwards.thrust is the force which opposes drag and is in axial direction of plane ie towards the length of plane.it is created by jet/propeller.gravity is used to propel the plne towards ground or change in direction.drag is opposition provided by the air.
basically lift and thrust help the plane to fly but all four of them control the position of plane.
so there is no antigravity but only forces.

Answer 10

Its called lift, created by the air foil, when air trvels past the wing, the upper surface is longer than the lower surface of the wing causing air to travel farther, faster, creating a low pressure. Because of the pressure differential between the upper and lower surfaces of the wing, It lifts upward.