R/C Tech Forums - View Single Post - Conical header vs Std header - what's the difference?
Old 07-24-2007 | 04:58 AM
  #11  
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AMGRacer
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It is kind of an involved subject, it is to do with a fluids change in flow properties when it is close to a fixed surface. Have a bit of a read here:

http://en.wikipedia.org/wiki/Boundary_layer
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