If you were right, the Mach related drag increase on the 109E would happen only somewhere between 498 km/h and 537 km/h, as the top speed in first charger gear (537 km/h, 2150m, 1115 hp) and in second charger gear (575 km/h, 4850m, 1100hp) are in perfect agreement.
A plane doing 498km/h at 1018hp at sea level, should do around 555km/h at 1115hp at 2150m and 600km/h at 1100hp at 4850m, give or take a percent or two.
These figures happens to be pretty much spot on Bf 109F performance, which either means it did not suffer the E model Mach effects, or it means the problem with the data is elsewhere.
Last edited by JtD; 10-20-2012 at 10:59 AM.
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10-20-2012, 09:58 AM
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