Interesting Stuff
Clive...thanks for chipping in with some very interesting info...
Always good to hear from one of the design team members...just curious about a couple of things...what was the mass flow per engine at M2 cruise...?...and what about the jet velocity out the tailpipe...?...my rough estimate puts it at ~300 lb/s and ~ 1,100 ft/s over and above the freestream velocity...
That would put propulsive efficiency at ~80 percent...which means engine thermal efficiency would be just over 50 percent...
Some other interesting figures...total flight power at M2 would be over 140,000 thrust hp...nearly three times the flight power of a triple seven...fuel burn would have been most impressive at over 13 lb per second...compared to 5 for the triple seven...
The triple seven's GE90 engine is good for a TE of ~50 percent...and propulsive efficiency of ~0.8...really quite amazing that a Mach 2 transport could still be the high water mark after all these decades...
Regards,
Gordon.
Last edited by goarnaut; 25th Nov 2012 at 03:45.