Brian,
Thanks for all the charts. All a bit mystifying.
more and more bleed air, as a percentage, must be being bled off the 4th stage. Hope I make sense.
That's good , thanks. The only value I have ever seen quoted for the cruise condition is 20% . In the patent, in 'Untold tales' and in Peter Law's presentations in AEHS website for example. Never seen a higher value to go with all the other oft-quoted thrust, etc benefits at M3.
What I have just found is the min value when the bleed is opened at M2.
In 'More never told Tales' ... "My solution was to open the valves at a lower Mach number, around 2.0 where there would be no bleed flow and no hiccup." I guess the turbine exit pressure wasn't much lower than the 4th stage exit at that flight speed.
I have more Qs coming.