On what Principle does Air craft work ?

Answer 1

bernoulli's priciple.

the wings of the aircraft is an aerofoil.

it creates a pressure difference between the to and the bottom of the wings. This is because high air velocity in the on the top of the wings and low velocity in the bottom. Therefore an upwards thrust is created.

Answer 2

Air craft works on the principle of aerodynamic law.In this principle low pressure is created on the upper surface of the wing which makes the flight move in upward direction.This principle is also seen when calendar moves away from the wall when fan is switched on

Answer 3

Air Pressure

Answer 4

I will just give you a copy of my article written few month ago on this topic.
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How can plain float on air?

By

minootoo


It is the geometry of the plain, and the propeller or jet engine or rocket engine.

To make plain fly, air under the plain must support the plain, the pressure under the wing of the plain is more then pressure over the wing.

The propeller drives the air over and under the wing, by design air has to travel more distance over the wing then under the wing. If air coming out at pressure P and going over the wing is say 2p, then neglecting other losses P=2p, as the air from prop, touches the front wing tips. Say half travel over and half travels under.

The component that goes over the top of the wing will be at pressure p1, and other component will be p2, by design you will have p1
The same displacement of air sucks the plain forward.
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Take off:
By

minootoo


Most plains have certain speed requirement to take off.

Most plains travel on the ground at and angel, nose high, tail down. This is call attitude.

All plains have steering like car, radar like boat but upside down and mounted on the top of the plain on tail end, flaps like bird (most new fix wing plain do not have flaps, some have very small)

Pilot steer the plain by hand, it is a turned around bicycle handle like device. This is use full only till the traction is available, plain, large once loose their steering around approximately 85 knots, smaller once sooner and extra large once slightly later. This is then an indication that the plain is getting to the point where it will be able to take off if the speed is increase, attitude is changed and flaps are adjusted. Since the runways are straight the plain does not need steering as a rule if there is no cross wind, but the runways are laid so that there is cross wind. Now plain is steered by foot paddles that move the radar.

If you look at the run way they have markings on them, they are the markings for the pilots to do certain thing and not to do certain thing.

Pilot takes the plain out of the terminal to taxis way to take off strip. On command from the control tower, the pilot, start to roll the plane and in most case makes it almost parallel to the runway (list air resistance so goes fast), he/she makes the take off run, at certain speed the plain gets slightly lifted, now pilot adjust flaps and the attitude, the plain looses contact with the ground and is in the air. The plain is given more power to gain altitude and clear the air port traffic and the town, high structure and reaches crushing height ordered by control tower. Pilot changes the attitude to crushing attitude (brings the nose down a little) and puts the plain on auto pilot.

Note: All take off and landings are done against the wind or against the wind components. This is because if wind become less or drops completely the plain will gain speed and fly, other wise it can loose the speed and crash.

Landing a plain

By
Minootoo

All normal landings are execute by flying the plane to the right side of the runway (this give pilot to examine the run way and slow down to slightly above the stalling speed, the plain s taken pass the runway and turned around, put on the glide angle for landing (about 3 degrees), it is taken pass the end of the runway turned towards the run way and centered on it, reverse procedure is followed and the plane is brought down, when the plain is between the certain two markings, power is reduce and the plane sits down gently on the run way, now the nose is dropped and the power is almost all but cut, plain rolls on the runway (exception jet plains have reverse thrusters and they are deployed at this time to reduce the speed of the plain on the ground in that case the full power is applied so reverse thruster would work properly).

Answer 5

Heavier than air aircraft, or aerodynes, include autogyros, gyrodynes, helicopters, powered lifts, and conventional fixed-wing aircraft (aeroplanes). Fixed-wing aircraft generally use an internal-combustion engine in the form of a piston engine (with a propeller) or a turbine engine (jet or turboprop), to provide thrust that moves the craft forward through the air. The movement of air over the wings produces lift that causes the aircraft to fly. Exceptions include gliders which have no engines and gain their thrust, initially, from winches or tugs and then from gravity and thermal currents. For a glider to maintain its forward speed it must descend in relation to the air (but not necessarily in relation to the ground). Helicopters and autogyros use a spinning rotor (a rotary wing) to provide lift; helicopters also use the rotor to provide thrust. Gyrodynes are aircraft intermediate between helicopters and autogyros, whose rotor is sometimes powered (often by a jet at its tips) but which do not have a tail rotor. Heliplanes are combination aircraft with both a rotor and wings; they can take off and land vertically, and hover, like a helicopter, but use their wings for high speed flight. The abbreviation "VTOL" is applied to aircraft that can take off and land vertically. "STOL" stands for Short Take Off and Landing.

All the best...

SSJ

Answer 6

Bernoulli's principle

Answer 7

Here's a good write up about lift ...

http://home.comcast.net/~clipper-108/lift.htm

Answer 8

Newtons third law

Answer 9

Air propulsion and jet propulsion...

Answer 10

I don no