How does aeroplane fly?

Question

How does aeroplane fly?

Answer 1

What makes airplanes fly are the four forces of flight, thrust, provided by the engines, propelling the airplane forward, lift pulling the airplane up, drag pulling the airplane back, and weight, or gravity pulling the airplane down. How much an airplane weighs, depends on the plane. Small 4 seater training planes, such as Cessna 172s weigh about 2000 pounds. Commercial planes, such as 747s, weigh about 430 tons.

Answer 2

Actually plane goes in air with the help of jets which are kind of turbines.Fuel is brunt in these turbines and lot of gases comes into being as a result of combustion which propells plane at very high speed

Little work of aerodynamics and plane is in air.This is main .There are system which regulates fight and controll.

Answer 3

Airplanes need two major things in order to fly.



They need some type of propulsion, usually one or more engine driven propellers or some type of jet engine. The thrust provided by the propeller or jet engine has to be enough to over come the drag caused by the air that impacts the aircraft during movement. Gliders use gravity to create the forward motion instead of an engine.



Airplanes also need some type of device that will create enough lift to overcome the weight of the aircraft.



A diagram showing the four forces on an aircraft in flight:



http://www.myaeromodelling.com/wp/wp-content/uploads/2008/01/aerodynamic-force.jpg



Many people are under the impression that Bernoulli's principle is responsible for the production of lift on an aircraft's wing. That is incorrect. A wing produces nearly all of its lift by being at an angle to the airflow. That angle is called the 'angle of attack'. With the front or leading edge of the wing higher than the back or trailing edge of the wing, the wing has a positive angle of attack.



Diagram showing different angles of attack:



http://www.discoverhover.org/infoinstructors/images/angleOfAttack.jpg



If the angle of attack is too high, the airflow will not be smooth (laminar) and the wing will stall, or quit producing lift. That is shown in the bottom view of that diagram.



If Bernoulli's principle were responsible for the production of lift, then airplanes wouldn't need a positive angle of incidence (the angle of the wing in relation to the fuselage centerline).



To learn how an airfoil really works, go here:



http://www.av8n.com/how/htm/airfoils.html



An airplane is controlled by deflecting control surfaces into the airstream. Most aircraft have three primary flight controls. One for pitch (nose up and nose down), one for roll (banking left and right) and one for yaw (turning left and right)



The names of the primary flight controls are:



For pitch.........elevator (usually on the tail)

For roll...........aileron (one on each wing)

For yaw..........rudder (one on each tail if the aircraft has two tails)



A diagram showing the primary flight controls:



http://www.allstar.fiu.edu/aero/images/pic5-5.gif



Some aircraft have secondary flight controls such as flaps, spoilers, speedbrakes and slats. Some aircraft have other secondary flight controls.



The flight controls are operated from the cockpit by the pilot, the copilot or the autopilot.

Answer 4

If you are working in mahindra then you should be knowing!

Answer 5

Planes fly thanks to their wings. The wings are tilted slightly upwards (the front edge of the wing is a bit higher than the back), and as they move forwards through the air, they twist the air and push it downwards behind the wings as they pass. Pushing the air down requires a lot of force. The wing tries to push the air down, but the air tries to push the wing up, and that's what holds up the wings and the airplane.



The math and physics are pretty complicated, but the basic principle is very simple. Wings twist air downwards … air pushes wings upwards. It always works.



If you could see the air, you'd see a big waterfall of air spilling off the back edge of the wings as the aircraft flies. In big airplanes, hundreds of tons of air are being yanked downwards by the wings as the airplane flies, but you can't see it because air is invisible (you'd feel it if you stood right below the airplane, though).



Engines are not necessary, only wings. Airplanes have engines to keep them from slowing down as they fly, but they can glide very easily even with the engines turned off. The only disadvantage to not having engines is that you cannot fly level—as you glide, you gradually descend lower and lower, so having engines allows you to fly for a long time at the same height without drifting lower. If the engines stop working, you just glide to a landing. An airliner can glide for a hundred miles with the engines completely off. It's the wings that matter, not the engines.

Answer 6

An aeroplane flies because air moving over and under its surfaces, particularly its wings, travels at different velocities, producing a difference in air pressure, low above the wing and high below it. The low pressure exerts a pulling influence, and the high pressure a pushing influence. The lifting force, usually called lift, depends on the shape, area, and tilt of the wing, and on the speed of the aircraft. The shape of the wing causes the air streaming above and below the wing to travel at different velocities. The distance over which the air must travel above the curved upper surface forces that air to move faster to keep pace with the air moving along the flat lower surface.

Answer 7

It's a well known fact that flight is physically impossible. Airplanes do not fly, they simply propel themselves into the air and then allow the earth to rotate underneath them. The illusion of flight is nothing more than the process of controlled falling.

Answer 8

Visit http://www.howstuffswork.com/

Answer 9

Bernoulli's Principle. As velocity increases, pressure decreases and vice-versa. Hold a limp piece of paper just under your lip and blow across it. The paper rises. Put an airfoil on a fuselage with more surface on top than on bottom, push it forward fast enough (depending on weight and speed) with a jet exhaust or a propeller and it has no choice but to rise. Planes have no choice but to fly if conditions are right. Jet engines use Bernoulli's principle internally too, but you didn't ask that

Answer 10

Read John Denker's "See How It Flies A new spin on the perceptions, procedures, and principles of flight. "

http://www.av8n.com/how/

Answer 11

Quite simple. Propulsion creates a vacuum in front and the plane is pushed forward. Dipping the joy sticks help plane to turn. Ailerons at the wing make the plane to gain/lose height. Fin at the back helps in balancing.

Answer 12

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