"Everyone that knows something about aerodynamics knew that this project is impossible(in terms of economics due to the high Mach speed)."
Adria, everyone knows Boeing milked the Sonic Cruiser's publicity value to the max, though unlike you, I believe it was an actual initiative to develop a new airplane. But I'd like you to quantify this comment:
"Everyone that knows something about aerodynamics knew that this project is impossible(in terms of economics due to the high Mach speed)."
IMPOSSIBLE? The transonic airliner concept has been around a long time, at least since the early 1970s. The April 1972 issue of Popular Science featured a detailed article by the late Dr. Werner Von Braun about a near Mach 1 airliner using the area-rule fuselage concept developed by NASA's Dr. Richard Whitcomb; the center of the fuselage was pinched inward, like a Coca Cola bottle. Aviation Week magazine followed this up with a more detailed article later that year. Both articles related that the area-ruling made this quite feasible and the next evolutionary step to higher speed without undue economics penalty, as with SSTs. The airlines didn't embrace it because the pinched fuselage made the airplane hard to stretch or design the interior. With the Sonic Cruiser, Boeing found another way of doing 'area-ruling' without the penalty of an inconsistent cross-section width. By moving the wing to the aft secton of the fuselage, they let the natural rearward tapering of the fuselage handle it. For potential customer, Continental, even the 15 to 20% speed bump could translate to higher yields, owing to being able to schedule another flight daily on some routes, as I recall Gordon Bethune saying when the Sonic Cruiser was offered. Of course, not enough airlines were confident of this, particularly in the debt-ridden aftermath of the 9/11 attacks. So, the Sonic Cruiser's parallel design-study concept, 'Project Yellowstone', which used similar engine and other technology without the advanced, higher speed economics, replaced the Cruiser in Boeing's focus as the airlines cried for more fuel savings. The Sonic Cruiser was said by Boeing to be as economical as a 767 but that wasn't good enough for the airlines, they needed better. Prior to the 9/11 recession, however, a fair number of carriers had looked at the Cruiser, some like Continental and Virgin, were publicly favorable about its prospects. It seemed perfectly feasible, it just didn't deliver the increased fuel-savings NOW demanded by the industry.
God, you're an incorrigible cynic!
