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Old 14th Feb 2006, 09:24
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Gingerbread Man
 
Join Date: Jan 2002
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That's a lot clearer, thanks guys. The problem I was having related to calculating the tip speed of fan blades. Using the LP turbine speed (which I assumed would be the same as the fan RPM), I got the tip speed as 496 m/s .
Clearly i'm not taking something crucial into account here.
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