Quote:
Originally Posted by TomcatViP
I quoted the exact title of the book elsewhere (sry not with me as for now). It's one of the RR heritage trust. It's a study extracted from RR sources and internal documentation.
As I said, this small book written in 1941 explain why RR had to create new methods to predict the perf of a S/C Engine at alt due to the divergences of predicted perf and the real ones achieved during flight test. The authors were the very same guys conducting the work at the time.
It is also explained how the US was slightly in advance in that way. But also why RR conducted that work as improvement were still on demands.
The base engine to conduct this work was the NEW MerlinXX flight tested in a Hurricane II.
There is a lot of interesting curves that I hve re-used in my post (but no scan). Most notably no perf test was seen using the 12lb boost when top performance was the very base of that work
The book itself is cheap (10 to 20$ ?) and can be ordered simply via amazon if I do remind well. I had to wait 1 or 2 month to get a new print out of the roll. You may read (or ask ?) Viper2000 posts with whom I heard first abt that book.
~S
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The book ref. :
Performance of a Supercharged Aero Engine
Hooker, Stanley 1872922112
Rolls Royce Heritage Trust
http://www.amazon.com/Performance-Su...6&sr=8-2-fkmr0
(seems the price has increased - the bill I dug out of my archives says 6.53€ !)
Regarding the Spit II, I didn't heard any of your commentaries regarding the roll out date (august) and service intro (sept late)