Question

what is aerodynamics

Answer 1

Aerodynamics is the study of the dynamics of air and in particular how air interacts with, and flows over surfaces of materials and geometries.

Answer 2

Thanks Jonny but can u please go in deyail and tell it a bit diagrammatical way

Answer 3

There are a few popular examples. I will try and dig out some diagrams for later, but in the mean time, examples of aerodynamics are in the design of airplane wings, formula 1 cars, and explains how David Beckham can curl the ball past the defensive wall into the net (I bet you didnt know he was such a good physicist). If you are of the American persuasion, then you may be more familiar with the pitcher curving baseballs at the batter to try and strike him out.

Answer 4

Jonny I still wnt to knw about it in detail. Please help please give me a good explanation for that

Answer 5

Aerodynamics is a very large area of study, but here is one small example of it. Attached is a diagram illustrating the principle of how an airplane flies. The shape of the wing (viewed from the side) is as shown. When it moves through the air (the wing moving to the left), the air on the upper surface is forced to move faster than the air on the lower surface. One property of air (and fluids) is that the faster it moves, the lower the pressure. A tornado can suck things up because the air is moving very fast, lowering the pressure in the vicinity of the funnel. Low Atmospheric pressure is associated with high wind speed. In the airplane wing example, because the air pressure is less on the top surface than the bottom surface, the wing is pushed up. The faster the plane moves, the faster the air flows over the wings, and the more lift is produced. The same principle applies in Formula 1 racing cars, but their wings are upside down, so that the cars are pushed into the ground to produce more grip at faster speeds aiding cornering. The same applies for rear spoilers on cars.

This principle is known as Bernoulli's principal, which is only one small part of aerodynamics. One can apply it to spinning balls, which produces the curved balls of football and baseball. It also explains (to some degree) the whistling of electric wires in the wind.

Note that there are other factors in airplane flight, such as the angle the wing makes with the oncoming air (known as the angle of attack), which aids the lift of the plane.

One needs to understand aerodynamics when designing planes, not just so that the wings will lift them, but in their fuselage to minimise drag, since increased drag increases fuel consumption, and slows maximum speed etc. Again, same applies to the design of Formula 1 race cars.

Answer 6

The Bernoulli Principle serves great in this. Explain the motion and pressures of a fluid.

Answer 7

thanks a lot Jonny