A useful post Banks but again referring to 6.25lbs boost (87 octane) in the rhetoric. As you know, 12lbs was available according to operating limits on the engine, this puts the Spitfire faster on the deck than the 109, not the 50kmph slower we are seeing here. That said, these graphs do plot the 12lbs boost speeds and it is these that require modelling, once cleared by the likes of those who 1C has an ear for.
Last edited by Osprey; 04-25-2012 at 01:55 PM.
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