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Old 25th Feb 2020, 15:45
  #14 (permalink)  
JohnDixson
 
Join Date: Mar 2007
Location: Hobe Sound, Florida
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Sikorsky can successfully argue that they flew a pusher tail-prop long before the Piasecki pusher. Recall the Roto-Prop testing on an S-61A in the mid 1960’s. Pics are in the SA archives.

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