109 e4 performance

[Kwiatek]

Regarding V15a performance in these test it didnt have variable-speed hydraulic supercharger control and of course it was a prototype plane ( in most cases prototypes reach better performacne then serial production planes)

Later test - French and Swiss show that tested planes had variable-speed hydraulic supercharger control with smooth speed curve but using variable hydraulic supercharger could casue some lost in speed at sea level but other hand cause more smooth speed range depend of alt without lost power between 2 speed supercharger.

So i think V15a test and performance could not be accurate for performacne of standart 109 E planes with variable speed supercharger.

Also Swiss 109 E-3 test is very accurate with German results at 1.3 Ata power at sea level speed.

http://kurfurst.org/Performance_test...MP16feb39.html



Swiss 109 E-3 reached 464 km/h with original prop ( 5 minut power) and from German test we got 467 km/h at 1.3 Ata 2400 RPM.