Aerodynamic technology and clever usage ? Message Board

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Non-Tech : Aerodynamic technology and clever usage ?

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From: Arthur Tang	2/13/2007 8:51:45 AM
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Drag as a consideration in airplane operating cost? Drag is very important airplane design consideration. It is either lamina flow or turbulent flow. against the airplane skin. Drag is reduced if protrusions are design on long surfaces that air resistance is effected. Windows and rivets and small protrusions will create turbulent flow next to the aluminum skin of airplanes to reduce drag. Even the surface finish of the aluminum or paint can effect drag. If drag is too much, then the jet engine has to develop more power to achieve cruising speed. Boeing design long fuselage and has a drag problem to be reduced in wind tunnels. Airbus on the other hand, has wide body for more lift possibility and body is short, so that drag is less of a problem. So much for drag. which is one of the three design criteria. Engine power, frontal resistance and drag against lift consideration. Large drag forces can slow down planes in cruising speed and cost more on mile per seat per gallon of gasoline.

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