Quote:
Originally Posted by TomcatViP
Ok I dig out part of my database (in fact I took a short cut).
Merlin XX !!
ALT(ft) SHP BHP (diff correspond to the power used to drive the supercharger)
15K 1267 1048
20K 1298 1073
20K+ 1362 1126
25K 1162 960
30K 945 778
35K 700 568
What is funny is that I made this exat assumption based on value long stacked in my memory and was told I was wrong.
Same As the exhaust gaz power (remind that conv some years ago on WC forum ?)
I do repeat thus are Merlin XX -20 data 1941/RR !!
Max power boost is at 21k is 9lb and then decrease steeply at a 7lb/10Kft ratio.
As I made the assumption max boost (the famous 12lb is only for Take off - supposedly 1min max emergency power at low alt too)
I do repeat : I am not trying to be the guy with the right info or data but only want to help (if I ever could ?!!) this sim to be better to her ancestry, path that I am certain is off all the Ninja FMed planes.
Typical 1940 RAF pilot had guts, faith and anger against the Nazi war machine. Those are the only WunderWaffen they had in hands.
I'll stay tunned in case some needs more of this.... but I hve to say that I am a bit angry 
~S! |
I don't understand why you have posted this here. It's the wrong engine from the wrong year fitted to the wrong aeroplane. You have also only posted a small part of the power curve (ie FS gear) and quote neither boost nor rpm. So what's the point?
If, as I suspect, you've posted a +9 curve then great. But why?
If the objective is to refute +12 psi for combat then RTFM because it's in the Pilot's Notes for the correct aeroplanes from the correct year fitted with the correct engines, as is evidenced in the original post.
The existence of a +9 curve does not preclude the existence of a +12 curve.
In any case however, the title of this thread is
Effect of boost control cutout prior to +12 psi boost modifications. I wrote the OP because the engine instruments indicate that we've got 87 octane fuel, and I figure that if we're going to have the wrong fuel modelled, we might as well have it modelled
correctly.
