17.04.2009, 23:20
Excellent. This gives me a few pointers. There will be a lot of fine tuning I expect :oops:
Some of the difficulties with published performance figures is that some of them are calculated figures released by Focke Wulf based on test prototypes using the 603G or EC motor. One has a two-step supercharger and the other uses C3 fuel (which the L-motor was initially thought to use). They did not receive the LA motor until 1945 and as far as I've been told there are no test data for this engine actually fitted.
Also the generally accepted (calculated) figures appear to relate to a take off weight of around 4900kg, that is without the autopilot and some other production equipment fitted.
The preproduction series actually had no additional flight equipment aside from 4 guns and canopy glass heating. The take off weight for Ta152V6 for example is 4370kg, roughly a ton lighter than my figures for the C-1 full production series (fitted with additional armour, 6 wing tanks, motorkanone, full all weather equipment and an autopilot, calculated including full ammo and fuel stores).
Considering if the calculated figures for the Ta-152C-1 are ~570km/h at sea level, then I should estimate a realistic ~550km/h sea level for the fully loaded Ta-152C-1/R11 actually produced.
But where I am indeed having trouble is the speeds at around 2500m, which ought to be exceeding 600km/h easily enough but I'm finding it difficult to get anywhere near 600km/h at 2500m.
I am fine tuning as we speak, trying to adjust the performance curve as altitudes increase correctly. It is very tricky because I am unwilling to alter documented technical specifications, so I can only work with distribution of accurate specifications through the il2 game-engine.
It should have better low altitude performance than what we are getting.
Some of the difficulties with published performance figures is that some of them are calculated figures released by Focke Wulf based on test prototypes using the 603G or EC motor. One has a two-step supercharger and the other uses C3 fuel (which the L-motor was initially thought to use). They did not receive the LA motor until 1945 and as far as I've been told there are no test data for this engine actually fitted.
Also the generally accepted (calculated) figures appear to relate to a take off weight of around 4900kg, that is without the autopilot and some other production equipment fitted.
The preproduction series actually had no additional flight equipment aside from 4 guns and canopy glass heating. The take off weight for Ta152V6 for example is 4370kg, roughly a ton lighter than my figures for the C-1 full production series (fitted with additional armour, 6 wing tanks, motorkanone, full all weather equipment and an autopilot, calculated including full ammo and fuel stores).
Considering if the calculated figures for the Ta-152C-1 are ~570km/h at sea level, then I should estimate a realistic ~550km/h sea level for the fully loaded Ta-152C-1/R11 actually produced.
But where I am indeed having trouble is the speeds at around 2500m, which ought to be exceeding 600km/h easily enough but I'm finding it difficult to get anywhere near 600km/h at 2500m.
I am fine tuning as we speak, trying to adjust the performance curve as altitudes increase correctly. It is very tricky because I am unwilling to alter documented technical specifications, so I can only work with distribution of accurate specifications through the il2 game-engine.
It should have better low altitude performance than what we are getting.