Brian:

It would be fun to look all that up! I'm sure the range was much more than 2500 miles, although less than the U2.

Remember, the SR-71 ran as an almost pure ramjet (with the turbine engine serving as preheater) at high speeds, so efficiency is considerably higher than for a straight turbojet. The engine nacelle used the shock wave from the "nosecone" to reduce the speed of the air to subsonic, so it could the re-accelerated up to supersonic speeds.

The air is dense enough to heat the center frame of the windsheild dull red, and the leading edges of the wings weren't much cooler, but fuel usage was fairly small.

The Concorde was a gas hog, the TU-144 used considerably less fuel, at the expense of a considerably more complex engine system (variable pitch turbofan).

Someday when I have nothing else to do I will see if I can dig up some data.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!