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Old 11-17-2009, 04:27 PM
greenman9 greenman9 is offline
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Originally Posted by Dad
I don't see any advantage in using double (aerofoil) vanes over single vanes. Anyone?
Another advantage of the double walled vanes is the differnce in the radius of the "heel" and "throat" of the vane, kind of like an air plane wing or propeller. kind of related check this out

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