Question:

How discover the controllable pitch propellers?

by  |  earlier

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how discover and if is possible to give more informations. pls

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3 ANSWERS


  1. constant speed props were invented in WW2, by some american I think.  certainly they were the first to use them, perhaps on carrier aircraft???


  2. Oh James.....

  3. Make please appropriate grammar for sentence question asking, and answering qualities are greater.

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