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Old 1st Apr 2010, 18:12
  #19 (permalink)  
Mark 1
 
Join Date: Aug 2000
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All the -22 versions had the standard 33-blade fan I believe.
I think the very early versions (Phase00?) had clappered fans to allow different aerodynamics either side of the splitter (i.e core flow and bypass flow). They used to make an awful racket when left windmilling.
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