From: email@example.com (Jim Young) Date: 12 Oct 96 02:36:04 References: 1 Followups: 1
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In article <airliners.1996.1895@ohare.Chicago.COM> Tomas Stephanson, firstname.lastname@example.org writes: >Why does Boeing not want to extend the upperdeck the full length of >the aircraft, is it not economical, aerodynamic, weight penalty? The really big reason is aerodynamics. A little things called area rule (look it up in any basic aero book or email me if you want an explanation) plays a big part in the drag of an airplane. When Boeing originally streched the 747-200 to the longer upper deck on the -300, the drag of the airplane actually went down, even though there was more fuselage. So I doubt if you will see the upper deck on any 747 derivative reaching much further aft than the leading edge of the wing. ______________________________________________________________ Jim Young 912-965-5243 Fax 912-965-4772 Gulfstream Aerospace G-V and G-IV Flight Test Engineering Savannah, GA "Speed is Life - FlyFast"