Quote:
Originally Posted by Varrattu
Hi Kwiatek,
please can you provide the source of that information?
Regards Varrattu
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The most interesting documents are here:
http://kurfurst.org/#Emil
It is need to read it carefully.
I found for sure that German tested serial 109 E with Db601A at 1.3 Ata (990 PS) reached at the deck 467 km/h. ( radiator 1/4 open)
So with emergency 1-minut power at 1.4 Ata (1100 PS) 109 E would be even faster - about 15-20 km/h faster ----> so about 485 km/h at the deck (1/4 radiator open)
According to German manual for 109 E with Db601Aa at 1.45 Ata (1175 PS) it reached at the deck 500 km/h ( probably radiator closed looking at other 109 test like French and British also looking at climb times).
Of course it would be very short time to keep that speed beacause 1.4(601A)/1.45Ata(601Aa) could be keep only for 1-minute. Also 1.3/1.35 Ata was allowed only for 5-minutes.
Other test - French and British cofirmed German manual claims that 109 E could reach 570 km/h at 5.0km but with closed radiators - position of radiators could change speed of these planes at about 20-30 km/h depend of altitude.
For comparision Spitfire MK1 at +6 1/2 lbs (1/2 hour limit) reached at deck 455 km/h (283 mph) but with emergency +12 lbs (5-minutes limit) it reached 505 km/h.