Full Blast,
If I knew what exactly you mean by SFC I could comment. I dealt with TSFC, which I explained clearly. The S is for specific, ie in relation to something. One puts the T in front, so that it is known to be thrust (a force). It could be power, if one was to define it that way. That is why I asked Dream 747 what he meant as well, because it matters in the discussions.
you say "turboprop best range and best endurance coincide with Vimd)". I will have to check my books then when I return.
you say "The example you give is totally wrong" What was wrong?
you say "effects of compressibility starts at speed above 300 IAS". Well, certainly not true in my example, which was at mach .75 and above. Sure, maybe at 300 KIAS at low level there is little/no compressibility effects, but I said a 777 at cruise altitude, at .75 which is not low level normally.
you say "Vimd is a KIAS speed, nothing to do with Mno". Of course you're right, and I said nothing to the contrary.
Mr E,
I'd like to follow what you say, but a picture would be worth a thousand words. But are you suggesting that if one was to take a 777 engine at cruise thrust, and take it up continuously in altitude at a constant mach .85 until it flamed out, that the TSFC would not continuously increase?