Quote:
Originally Posted by Bounder!
Certainly agree that the Spitfire and 109 top speeds should be very similar, almost everything I've read seems to state that. Not sure about the 109 having a greater top speed at altitude or sustained climb though?
This graph (posted in this thread http://forum.1cpublishing.eu/showthr...=34115&page=10) showing top speed at altitudes ranging from sea level to 35 thousand feet seems to show the Spit having a slight edge on the 109 at altitude:
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Your chart is for an E3, and secondly, it does not specify boost level for the engine. I do not think it is for an E3 using the potential boost allowable during BoB.
It is also more importantly not an actual German test document, but a chart derived from a couple of secondary sources.
And the Spitfire performance is noted as being 'slightly adjusted' by Alfred Price, based on a couple of assumptions which may or may not be accurate.
I would recommend you study the actual test charts available on this site:
http://www.wwiiaircraftperformance.org/