how does aeroplane fly in the air?why not we?

Question

give me clear details about this

Answer 1

Aircraft fly because they have wings, just like a bird. Wings create lift! The top of the wing is negative pressure and the underside of the wing, positive pressure, which in turn creates lift. You would have hard time doing that with your arms. even if you had a pair of wings fabricated to fir your arms, it would be impossible to fly. this is because a human body is not designed to fly, even to attempt something like that and the weight of your body alone, makes it impossible!

Answer 2

A long time ago, a great mathematician (Bereulli ?sp), came up with an equation that was supposed to demonstrated that with a wing's surface being semisymmetrical, that the air passing over the top of the wing had to move faster than the air passing beneath it -- creating a lifting force. This equation held for years but when you consider the symmetrical airfoil, like that used on an acrobatic flyer, the bottom is the same shape as the top, the equation was found to not hold water. I design and build R/C planes, I can make a flat sheet of plywood fly gieven enough horsepower. Hopes this helps.

Answer 3

as an object passes through air the air separates and comes back together after the object passes through it.

Imagine of running a spatula through a bowl of cake batter.

An Airplane wing is curved so that air passing over the top of the wing must travel further than air passing under it.

Since the air must arrive at the back of the wing at the same time, the air going over the top must go faster than the air passing below the wing. This causes a low pressure area above the wing creating lift which makes the airplane fly.

Answer 4

We do not have wings, airplanes do. For a description of lift, look up Newtons 3rd law as it relates to lift. Thats how airplanes fly!

Answer 5

Because we don't have wings, we can't fly but Airplanes have them, so they can fly around carrying the dam passengers.

Answer 6

Lets consider aerodynamics, --- first the airplane! A number of things are required for a airplane to fly. Since airplanes start out on the ground, they need enough power to overcome gravity (& friction) - in order to get airborne, -- if you have enough power (properly directed), - you don't have to be an airplane! This kind of flight is called a "rocket"! In order to get flight, you have to have properly designed "airfoils" (since youi want to coltrol the direction and other aspects of traveling, you want more than just a wing). Wing (s) must be of proper design and size to give enough "lift" to get the rest of aircraft (and passengers) off the ground. Most wings have a sort of "terardrop" shape with the big part in front, - tapering down to almost a point at the back, The treardrop however is quite "stretched out" and is not asymetrical in shape. Ideal design is sort of convex shaped on the top, and very slightly concave on the foreward half of the bottom! the wing gets it's "lift" by unequal pressures created by air flowing over top as related to air flowing under the bottom. It takes much longer for the air to flow over the top-- (so it has to move much faster to re-unite with the air underneath). This makes the "pressure" much lower than the bottom (note it is not a vacuum), so the wing seeks to lift up the entire airplane! It is true that foreward movement also gets a small amount of "lift" by just plain hitting the air at a small angle (about like a sail on a boat does). -- however this is the most prevelent when very close to the ground (as in landing or taking off), - it is called "ground effect" -- it is actually "squishing air" in between the ground and the angle of the wing to make the ariplane keep flying at a slower speedl

Now the other airfoils are the eleveators, rudder, and airlerons, -they are "very small wings of sorts", - they are used to "deflect the direction of the airplane so that you can control where you are going! Elevators literally "push the tail up or down" to control height or angle of flight in relationto the ground. The rudder "pushes the tail from one side to the other (or holds the airplane in a streight line). The airlerons cause the wings to "roll" one side moves up and the other side moves down, - which deflects wing up on "side that moved down" and down "on the side that moved up", -- since the airfoils move the opposite direction that the control itself moves -- Now we get to the fueslage, -- it should be designed with a smooth airflow,as the more resistance it gets going through the air (called "drag",-- which is fricton)-- the more drag it has the slower the airplane will fly, and the more power it will take to propell it foreward in the air! Also the more power it takes it to fly faster!! The fuselage has to be strong, big enough to haul the number of people (and fuel for engine-s)-desired, - it also has to be big enough and strong enough to keep the engine secured and not "flying off somewhere"-- (very disasterous when up in the air! The wing has to be big enough to support all this wieght, and not collapse, --and the other airfoils have to be large enough to perform the required tasks to control the airplane!

God designed the birds with all this stuff - and they can operate on "muscle power" (provided by appropriate food for that species) Plus they have flawless internal navigation systems.

Man on the other hand is built all wrong to fly. Our body design (fuselage) is neither aerodynamic or propel width height or weight- (equivalrent of passengres). It has insufficient power to move body foreward fast enough to fly (and we don't carry enough "fuel" to maintain sustained flight), and our airfoils are all wrong in design. feet are very poor "tailfeathers" in that they aren't designed to control direction, - up down or sideways!

However man can glide for a short while, - if dropped out of an airplane at enough altitude. See "skydivers" they have to practice a little to maintain proper control (because of poor wing and airfoil sizes and design)...... and of course the parachute allows them to land in one piece (most of the time)! ...The parachute becomes a temporary "wing - or controlled sail", that somewhat controls direction as well as rate of "fall"!