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Old 05-19-2012, 06:27 AM
BlackBerry BlackBerry is offline
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Join Date: Jan 2010
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Tomcatvip, if you exam the fw190a8 max level flight at 20000ft, you will find the tip of VDM propeller is just 1 Mach.

680km/h TAS, 2700rpm engine, 0.54:1 reduction ratio, 3.3m diameter
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