Calculation of thrust

Discussion in 'Hydrodynamics and Aerodynamics' started by Lawnchair, Jul 3, 2018.

  1. Lawnchair
    Joined: Jul 2018
    Posts: 1
    Likes: 0, Points: 1
    Location: Georgia USA

    Lawnchair New Member

    I'm trying to determine if a 2018 Kawasaki Ultra LX (900 pounds dry weight, 165 hp, 4 stroke) will have more/less/same thrust as my 1998 Yamaha 1200 XLT (600 pounds dry weight, 135 hp, 2 stroke). Kawaski lists thrust (975), Yamaha doesnt. Kawasaki won't give test rides on this ski to compare with mine. Help?
     
  2. baeckmo
    Joined: Jun 2009
    Posts: 1,096
    Likes: 111, Points: 63, Legacy Rep: 1165
    Location: Sweden

    baeckmo Hydrodynamics

    For a rough estimate of what is technically possible, pump impeller inlet diameter and outlet pressure nozzle diameter is required, plus engine rpms. Since thrust is speed dependent, you must also state at what speed you want the comparison.
     
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