Throwing some light on rates of turn

[CaptainDoggles]

Originally Posted by ATAG_Snapper

Spit Ia

FTH = 16500 ft
at 6.25psi, 2750rpm (rad open) engine fails after about 3 minutes. Just enough time to get stable 245mph IAS (with 3000rpm couldn't get this alt without engine death)

245mph IAS@16500ft = 323mph TAS = 520 kmh TAS

Oh dear, this is under even B6 plot speed (560kmh TAS at 16500ft).

Max TAS for the Spit1a occurs closer to 22000 feet, not 16500.

I really hope I making some kind of testing error here. Tried online and got same values. I wouldn't feel confident taking any Spit against 109s at alt with these values.

The Spit 1a is faster than the 109 above ~6000 meters.