Why still no dive acceleration difference?

[BlackBerry]

The FW-190 has a higher terminal velocity than the P47. It developes almost as much power but has lower drag production.

Niether aircraft though is limited by the relationship of thrust and drag. Dynamic pressure limits and mach limits set the boundary.

Ternimal velocity (speed of equilibium piont)depends on many factors.

A: fw190a8 with full oil tank and ammo, 4 tons weight
B: fw190a8 almost out of oil and ammo, 3.5 tons weight.

Max level flight at sea level: A=B
Dive in 45 degree: A>B

The heavier of aircraft, the more benefit in dive. in a 0 degree "dive", that's level flght, fw190a8 has more terminal speed than p47d, eg, 580km/h vs 560km/h. In a 45 degree dives, obviously P47 has more.

Some operational realities of these two aircraft:

1. The FW-190 pilot closes the cooling gills, which are closed anyway for level flight, ensures the propeller is in automatic, which it is for normal operation unless the KG is operating in emergency mode, pushes the nose forward and dives. His engine is automatic and adjust's as required for actual conditions under air load. The supercharger system responds instantly to power changes. In short, he pushes the stick forward and goes....

2. The P47 pilot does not have a automatic system. He has to trim the aircraft tail heavy, reduce his manifold pressure, reduce rpm to 2600, close cowl flaps, and then dive. He has a throttle he must baby because of the turbocharger. A turbocharger does not respond instantly to power changes and the P47 is much more restricted in its use. Reducing it too fast and he can lose pressure in the system which will take him ~30 seconds of level flight to get back. He cannot dive until he reduces it. In short, he cannot just push the stick forward and go.....

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Perhaps you are right about the operational difference between P47 and Fw190 in summer 1943. Perhaps the fw190 pilot was waiting for p47 until p47's pilot finished his preparation before dive. Don't forget that was a "test", not a real "combat". Btw, there is evidence that p47 propeller has more efficiency at 2600rpm than 2800rpm in a high speed dive. Does P47 need to reduce manifold before dive?

Anyway, for some reasons, P47 was outdived by fw190G initially. P47 was slower and behind of fw190 after a short time of 65 degree dive. In order to over take fw190 in later dive stage, P47 need to get higher acceleration at first, that is the proof of P47 has better dive acceleration WITHIN fw190's allowable dive limits----466mph.