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Drgondog
Finnish oppinion was for Bf 109 G-2 and G-6.
Typical cruising flight at 2500m at 0.9-1.0 ata, 420-440km/h IAS, 470-490 km/h TAS, consumption 250l/h, max flight time c. 1½h. Max distance c. 750km without any reserves.
Juha
This one gives a pretty good comparison of range and endurance under comparable conditions - though keep in mind, the actual cruising speeds may differ:
Davparlr,
You're not reading the chart correctly. The Ta-152H-1 reaches 760 km/h at 12.5 km with the E engine (Note GM-1 kicks in at 11.5 km).
However this is at Steig u. Kampfleistung, explaining why some Ta-152 pilots reached 500 mph in the a/c at Start u. Notleistung or Sonder Notleistung as Erich has noted before.
The reference books I have agree that the top speed of the F4U-4 at SL is between 374 mph and 381 mph. Also, several flight test reports on the F4U-1 show SL airspeed of 365 mph and one, with a special finish, did 376 mph. Also, the SL speed of the F4U-5 is 403 mph. I think your number is at the bottom end of the F4U-4 SL airspeed variation.As for the F4U-4's top SL speed, it is 368 mph (320 knots [592 km/h]) which is slower than the Ta-152H-1 with the E engine (597 km/h).
As for speeds with the EB engine, 770 km/h was the minimum expected top speed WITHOUT GM-1, with GM-1 speeds well above 800 km/h were expected.
As was the P-72 projections.
Not to get into tht again, but the XP-47J exceeded 800km/h in testing, at 507 mph at 32,000 ft, and was relatively close to being ready for production (similar to the P-47M/N tumeline) so I don't know why you keep going back to the P-72 which was less practical in an immediate time span, and showed superior performance in testing. (with 4-bladed prop) IMO continued work on the P-47J would have been much more useful than concentrating on the P-72, as happened in reality.
I think it is interesting that they cancelled the P-47J in favor of the P-72. It seems the lowest risk approach. Incredible engine, 2800 hp at 32,500 ft.
The P-51D never climbed that fast Davparlr. The lighter P-51B achieved 4,380 ft/min with 104/150 octane fuel at 75" HG.
I'm talking about all the charts from that era , I wasn't aware how much humidity affected things . I was aware of how humidity affected flight itself but the light never came on in my mind on how it affected engine performance. If its humid the the engine performance degrades the reason being is the amount of moisture in the air affects the fuel air mixture . Water doesn't burn.