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Non-Tech : Aerodynamic technology and clever usage ?
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From: Arthur Tang2/13/2007 9:07:42 AM
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Jet engines?

Jet planes generally use two jet engines to power a plane. There is a jet engines used to heat the cabin and exchange fresh air circulation for passengers.

Jet engines typically runs at 50,000 RPM at cruising speed, and the fan in the jet engine move the air thru the engine to push the plane forward. Reverse thrust uses the airflow in the jet engine to break on landing, slowing down speeds of 180 MPH.

Jet engine runs by gasoline explosion to drive buckets made of titanium. The diameter size determines the power depending on the size of the fan. Over 6 foot diameter of fans drive the largest jet engines. Smaller jet engines in fighter planes are merely 3 foot diameter.

The smaller the engine, the more fuel economy is generally the rule. So, a plane design with more lift has the advantage of efficiency. At higher speeds, the plane flies effortless upto the maximum height. Boeing achieves more lift by expanding the wing lifting surface area. Airbus has more lift on the fuselage depending on speed of the plane.
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