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Power lost due to friction in a propeller

  1. Jul 29, 2016 #1
    Screen Shot 2016-07-29 at 17.19.02.png 1. The problem statement, all variables and given/known data
    Calculate the power lost in friction in the system shown above, with d=0.36, rpm=200, u=0.72, prop=1m and oil=0.23m



    2. Relevant equations
    I know p=w/t comes into it in some form, either with other equations subbed in or a derivation somewhere, but not sure.

    3. The attempt at a solution
     
  2. jcsd
  3. Jul 29, 2016 #2

    CWatters

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    Power = torque * angular velocity
     
  4. Jul 29, 2016 #3

    rude man

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