P-47 Actions 29 Mar 44 near Berlin

[Six Nifty .50s]

Originally Posted by Franek Grabowski

I am afraid you cannot understand simple laws of physics.

Then we have to wonder where you learned about 'physics' and earth science.

The 'simple laws of physics' does not suggest that the maximum speed of a Spitfire XI flying at treetop height is exactly the same as it was at 25,000 feet. The 'simple laws of physics' does not tell us that that air resistance is the same, regardless of height.

Originally Posted by Franek Grabowski

Please, prove me that M=0,83 that Herb Fisher was unable to exceed is more than M=0,89 achieved by Martindale.

These speeds were achieved at what heights?

Originally Posted by Franek Grabowski

There was no Spitfire with such serial.

You'll have to take that up with Eric Morgan.

Originally Posted by Franek Grabowski

Ridiculous. Making complaints because the aircraft reached the top speed for a propeller driven aircraft and this caused a few malfunctions? Fisher achieved TAS=560, a little bit less than Martindale, I would love to see what would have happen with Thunderbolt flying with TAS=600.

Perhaps Eric Morgan made another error when he claimed that a Spitfire reached 600 mph. And we have no way of knowing that instrument readings were always accurate.

Originally Posted by Franek Grabowski

I do not know if you do that willingly or not but it was clearly noted that Fw 190 was able to escape (Split-S) due to excellent ailerons' efficiency and superrior roll rate.

The report also clearly states that the FW 190A-3 also dived at higher speeds than the Spitfire V and the Spitfire IX. This is because the Spitfire had inferior dive acceleration. The opposite was true in USAAF tactical trials pitting the P-47 against the FW 190 where the Focke-Wulf had initial advantage but the Thunderbolt soon closed the gap.

Whatever Spitfire test pilots claimed to have achieved in very high altitude dives was certainly not borne out in combat, or in the RAF tactical trials versus German fighters.

Originally Posted by Franek Grabowski

I doubt if Fw 190D had much different Mcr than Fw 190A, this means their maximum speeds must have been similar.

When trying to escape, acceleration in the dive was far more important than maximum theoretical speed, which for the Spitfire had to be built up over a long period -- and essentially useless to the RAF pilots flying tactical trials.