a couple of questions:
1. At fixed max afterburner throttle angle, for example, when derich is selected what keeps engine speed constant? What happens to nozzle area?
2.
Highly compressed air being fed directly to the afterburner, up to 40% of the air consumed
Where do you get the 40% figure
Brian?
3. What's the explanation for Col Graham's
"the faster you flew the more fuel efficient it became....at Mach 3.0 it used 38,000 lb/hr. Accelerate to Mach 3.15 fuel flow drops to 36,000 lb/hr.
ie. out of all the various efficiencies that define the overall eff of the complete aircraft/propulsion system which one (or more) go up (or down) to give the net improvement as reflected in reduced FF?