How areoplanes works?
Answer:
http://travel.howstuffworks.com/airplane...
http://en.wikipedia.org/wiki/aeroplane...
Aeroplanes work effectively the opposite way to Formula 1 cars- they have all those angled sections to push them to the floor to give them more grip where as an areoplane have adjustable flaps pointing down meaning they push against the air and lift off. Is the basics behind it anyway!
It comes down to basic physics. Any object has a number of forces acting on it, and an aircraft is just the same. First, it has mass, which gravity acts on, pulling it towards the ground - we call this effect weight (objects that are in space are weightless, because they don't have gravity acting on them, but they still have mass).
An aircraft needs something to counteract its weight and get it into the air. This is called 'lift', and is generated by the wings. Wings have a special shape - usually curved on the top and flat on the bottom. As air flows over the wings, the air on the top is forced to take a slightly longer path than the air on the bottom, so it has to speed up. This causes the pressure on the top to be lower than that on the bottom, which effectively 'sucks' the wing upwards.
This is obviously a very simple explanation, as in practice there are a lot of very complex things going on. Obviously, to get air to flow over the wing means it has to be moving. For that, we need a force called 'thrust', which is provided by the engines. As any object moves through the air, it meets resistance as it has to push the air out of the way, so the designers of the aircraft try to make the shape as streamlined as possible.
It's the same problem that car designers face - certain shapes move through the air more easily than others, so cars and aircraft all tend to look similar. The force that tries to resist the forward motion is called 'drag'. Next time you're in a car going down the road, put your hand out of the window. The force you feel pressing on your hand is due to drag.
So, in summary, to get an aircraft into the air, we use engines to supply thrust to counteract drag, which causes air to flow over the wings, which generates lift, and when the lift is greater than the weight, the aircraft takes off. You may of heard of aircraft 'stalling'. This is not the same as in a car, where the engine stalls and the car stops. When an aircraft stalls, it means the wings are no longer generating lift, which can happen for a number of reasons. A stall usually occurs when the aircraft is going too slow for the flow of air going over the wings to generate enough lift, but it can also occur if the angle the aircraft is flying at becomes very steep. The airflow becomes turbulent, and the lift is lost.
It's easy to recover from a stall, as it usually means pointing the nose of the aircraft downwards to increase speed, or applying more thrust. Almost all modern aircraft are controlled by computers, which know all about stalls, and won't allow the pilot to fly in a way that would allow a stall to happen. They effectively monitor what the aircraft is doing, and if it looks like something like a stall is about to happen, they take steps to avoid it. This system is called 'Fly by Wire', which means that the pilot's commands are transmitted along wires, rather than the old-fashioned pulleys and cables method.
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For a plane to fly , it must be given a lifting force at least equal to its own weight . the wing of the plane is shape so that the upper surface is actually longer then the longer then the lower
one
Air stream spits when it hit the leading edge of the wing , part going over the upper surface and part going under the lower surface. For the 2 stream to match up when they meet just after leaving the trailing edge of the wing., the air going over the top has to move faster then the air going below the wing, this is where the Bernoulli's principle kick in.
The Bernoulli's principle stated that fast moving fluid will have a lower pressure then slower moving fluid there fore when the plane is fast enough the presser on the upper surface will be so low that the wing together with the plane will be suck up .
when this happen a plane will be lift up into the air.
To make the airplane move forward there must be some kind
of force and the force come form the jet engine or the propeller to provide thrust. The basic idea of the turbojet engine is simple. Air taken in from an opening in the front of the jet engine is compressed to 3 to 12 times its original pressure in compressor. Fuel is added to the air and burned in a combustion chamber to raise the temperature of the fluid mixture to about 1,100°F to 1,300° F. The resulting hot air is passed through a turbine, which drives the compressor. If the turbine and compressor are efficient, the pressure at the turbine discharge will be nearly twice the atmospheric pressure, and this excess pressure is sent to the nozzle to produce a high-velocity stream of gas which produces a thrust.
well,
4 main forces on an aeroplane, namely
weight
uplift (-mainly due to wings)
(both balnce for airborne aircraft)
drag
engine thrust
(for forward movement)
these forces are basically manipulated using different devices and systems and operational devices, and well, you get the idea i hope!
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