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Axial Piston Pumps Equation Help

  1. May 6, 2009 #1
    Right, im in the process of designing an axial piston pump.

    I have obtained the following formula from a text book for power output. unfortunately i dont know what units the formula requires, is anyone able to confirm what they are? Also, if anyone knows of a good resource for pump design please let me know!

    right

    P=2rANtan@(p2-p1)n

    where

    P=power
    r=radius of centre of piston from axis
    A=area of piston
    N=number of pistons
    @=swashplate angle
    p2 and p1 = pressure differential
    n=either rpm or revs per second - i dont know

    I need the forumla to be in metric form - basically, if i use

    P=Watts
    r=metres
    A=metres^2
    p=pascals
    n=rpm/rps

    Will the formula be correct?

    Many Thanks

    Ed
     
  2. jcsd
  3. May 10, 2009 #2
    Have you tried deriving it for yourself? This is always a good start.

    At the very least, you should be able to check the units.
     
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