[MadBlaster]

Originally Posted by BlackBerry

Accurate calculation should be performed by Computer. As il2 players, we just need to know on what speed will we dive with better acceleratin than opponents.

In the example of P47 vs Fw190G, the P47 did three steps to overtake Fw190.

1) to get better dive acceleration

And after some time,

2) to get a higher speed

And after some time,

3) to over take fw190G

Therefore, P47 acquired better dive acceleration firstly. So we can estimate roughly:

A)From 400km/h to 500km/h IAS, fw190A has better 65 degree dive acceleration.

B)from 500km/h to 780km/h and above, P47 dives faster.

It's important for P47 to keep high speed in battle field. If a fw190a rides on you at 3000m altitude, with same altitude and IAS, he is ready for shooting at you because there is 350 meters distance between you. THE SPEED OF YOU IS VERY IMPORTANT. If both of you are 500km/h, your P47d could outdive fw190a immediately in a 65degree dive, when you dive to 900m altitude, you could pull around 200m away from him, thus you are out of his shooting range(550m) when both of you begin to level fly near the sea level.

Furthermore, you may 60km/h(17m/s) faster than fw190a in the end of dive, during the slow down level flight of 30 seconds, fw190a speed decreases more quickly than you, roughly you are round 1000meters ahead of fw190a when both of you reach Vmax.

I've never seen that significant dive advantage in il2, so I suspect the propeller efficiency calculating in il2 FM.

I just got a flashback of chasing p47 in a steep dive in 109 g-10. I got some light hits with machine gun and he was getting away, then he pulled hard g and the wings flew off. No EAD, but it was pretty funny. All he had to do was fly straight.