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Very Confused Static Pressure?

  1. Dec 2, 2009 #1
    Hi, im trying to calculate as best but simply as i can the (approx) thrust from a propeller..

    and my research shows i have to calculate:

    prop velocity(pv) = pitch * rpm

    with pv i can then use Bernoulli's equation to calulate the pressure and multiply it by the propeller surface area to give me thrust.

    So ..... pt0 = p0 + .5 * r * pv ^2

    that equation should give me thrust.. But. p0 is apparently "Static Pressure".. and i cannot for the life of me work out how to calculate static pressure.

    Hope you can help, my maths isnt all upto scratch so be kind! :)

    Thanks
    Andy
     
  2. jcsd
  3. Dec 2, 2009 #2

    russ_watters

    User Avatar

    Staff: Mentor

    In an open airflow situation (no ducting), there is no static pressure.
     
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