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    Re: Prop-walk.
    From: Jared Sherman
    Date: 2003 Apr 22, 22:20 -0400

    Peter-
     
    
     Not right at all. Cavitation is, specifically, that phenomena where water 
    literally BOILS in the relative low pressure zone at the trailing edge of the 
    screw. Since the water pressure is lower closer to the surface, it is easier 
    for air to boil out in the water closer to the surface.
    
     Take a big enough prop, put enough horsepower behind it, and the right shape 
    to the edge. and you can make it cavitate at any depth. Reduce the 
    horsepower, reduce the prop speed, and you reduce the pressure differential 
    and the boiling stops.
    
     Another one explained in the engineering texts.
    
    
    

       
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