As I intimated in my post #138, I was, and remain so, confused by a couple of sentences in the "F-12 Series Aircraft Propulsion System Performance and Development" by David H. Campbell, so sent an email to Doctor Abernethy for enlightenment.
1. If the AB is reduced to minimum AB, the engine would actually be dragging on the engine mounts at high Mach numbers.
2. Further reduction of engine thrust below military power will result in no propulsive thrust on the aircraft.
The good Doctors answer
1. This is a transient condition and is very complex. Most of the thrust at high Mach comes from the inlet, not the engine. Many years ago I took a course for a year on supersonic inlets and it was very difficult. Same answer for 2.
Sorry ....not much help.....
Reading David Campbells paper one would assume it to be a steady state condition he is referring to, rather than transient.
Well, I guess we'll just continue to argue the toss.
