Why still no dive acceleration difference?

[BlackBerry]

Originally Posted by MadBlaster

"There is small clue as Crummp said in 2005"

LOL! Seven years ago. No where to run, no where to hide.

German 3-broad chord blade prop plane lost 4% top level speed compared with 3-narrow-blade, according to drag fomular, new broad design lost roughly 8% efficiency around 5.5Mach. Why? Because the bad thing--more drag--become more noticable when speed building up?How about 0.7 Mach? Broad chord design will lose 15% efficiency than narrow chord?

There is evidence that 3-blade NACA16 on P47 gets 63% efficiency at 0.7 Mach, so let's assume that ClarkY and Gottingen(narrow chord) share the same performance with everyelse being equal.

But fw190a8's diameter is quite smaller than P47's, then much bigger advance ratio, guess fw190a8 get 45% efficiency at 0.7 Mach?

Allied 4-blade NACA16 outperforms 3-blade NACA16 at 0.4 Mach, with extra 7-10%, probably at 0.7 Mach, 4-blade NACA16 will get 75% efficiency.

45% vs 75%? This is critical for P51P47Temepest's tactics. I strongly suggest il2 developing team simulate the efficiency of WWII late prop at high speed using software such as ANSYS, otherwise, this game could not perfectly simulate western line where the "battles are not forgotten".