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Non-Tech : Aerodynamic technology and clever usage ?
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From: Arthur Tang7/9/2007 6:46:11 AM
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In the aero industry, composite plastic with high strength carbon filaments was always a technology they desire. Light weight and good strength.

However, the problem is homogeneity in composite plastic structure. The carbon fibers are all different in size and weight that composite material have problems with vibration and resonance. Some lead to complete shattering of plastic bodies of commercial Lear jets and even stealth fighters and bombers in flight; which lead to CIA grounding all the government fleet(after 5 years of use).

So, the solution is to continue use of aluminum(lasts over 35 years) or titanium, but design the nose cone not to a point, which pierce the air. But to design the nose cone like a duck bill. the nose cone tapered to a line. the width of the line gives the fuselage more lift than a pointed nose cone.

In aerodynamics, mechanical lift by the pressure drop of longer length of upper airflow path, lift the plane saving fuel. Recent airbus redesigned nose cone, saved gas and can land at the slow speed of 140 knots per hour(much safer than formerly 180 kph). Boeing's new nose cone is still more pointed and not like duck bill. Wide and short bodies will have more lift and less drag than narrow and long bodies.

It is all in the understanding of frontal resistance(nose cone design), lift(shape that lengthens the upper airflow path), center of gravity(placement of the slant wings for ease of flight control in gliding), drag(laminar not turbulent flow on the skin of the length of the plane), and engine size(fuel flow rate) that airlines can lower their cost of seat mile. Which makes their business of customer travelling, comfortable and affordable.
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