Hi Knegel,
>i just wonder how much it have, i guess 1750hp (WEP), this would explain the bad behaviour vs the La7 and Spit16, but on the other side then the 190A5 should be the way better dogfighter, or the 190A´s use the BMW801Dg also with max 1750hp.
Have a look at this graph:
http://hometown.aol.de/HoHunKhan/Fw190D-9Analysis.gifThe blue curve is extrapolated from flight tests, combining the drag factor of a Fw 190D-9 tested in a close to finalized configuration with a sub-standard engine with the power curve from a standard engine.
(It's conservative as the substandard engine is assumed to give full power albeit at a lower full throttle height.)
So the blue curve is a pretty realistic estimate of minimum Fw 190D-9 performance with a 2100 PS (MW50 injection) engine without bomb rack.
Curve 4 is the Focke-Wulf estimate for a Fw 190D-9 with a bomb rack. That's quite a bit faster than my extrapolation, but it makes sense as the Focke-Wulf estimate probably includes the engine compartment seal that the aircraft I based the blue curve on didn't have. I believe Naudet could find no documentation on whether this seal was ever fitted to operational aircraft.
(Based on curve 4 and my rendition of it (note slight deviation at low altitude), I have tried to match curve 3 by increasing engine output. I arrived at 2400 HP, but when I posted this curve on this board for the first time, we arrived at the conclusion that the drop in high-level speed compared to curve 4 is not due to higher drag, but rather due to a lower compression. Accordingly, curve 3 is actually achieved at a slightly lower power rating than these 2400 HP.)
Anyway, you could measure the Aces High Dora's speeds at different altitudes and compare it to this graph. That would probably give you a good idea of what power Hitech used for the Dora, and maybe even whether he included the effect of the engine seal or not.
(Note that Naudet by some time-consuming and very thorough reasearch found out that the Dora was really running at 2100 HP maximum, not at the 2240 HP mentioned in many places, including Mister Fork's post - and a lot of my own :-) I had used the 2240 HP data, too, and it took Naudet quite some effort to convince me I was wrong! :-)
Regards,
Henning (HoHun)