BOAC and John Farley, thanks, but are you talking about the high speed stall situation? The quote from HTBJ in my last post here refers to 0.61 Mach; would sinificant shock waves be developing at such a low Mach No.?
I was under the impression that the plain old "there ain't enough air flowing over me wings" stall speed actually increases with altitude.
I get the feeling now that I am missing something so bl***y obvious. Don't lose patience with me please. Ta.
Wilf.