PPRuNe Forums - View Single Post - Ceiling effect (in stead of ground effect)
Old 21st Mar 2010, 13:37
  #4 (permalink)  
4dogs
 
Join Date: Jun 1999
Location: Australasia
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blockage effect

yep,

The ceiling causes a beneficial change in inflow angle which leads to less pitch required, hence less drag and less power required compared to free air.

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