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Betz law

  1. Nov 27, 2011 #1

    Einherjer

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    Does Betz law apply to helicopters? I.e will maximum 59% of power supplied by an helicopter actually provide lift?
     
    Einherjer, Nov 27, 2011
  2. jcsd
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  3. Nov 27, 2011 #2

    rcgldr

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    Betz law applies to turbines that extract energy from a moving gas or fluid, it doesn't apply to propellers or rotors that add energy to a gas or fluid.
     
    rcgldr, Nov 27, 2011
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