bauhaus

New book by Joseph L. McCauley:

The Physics of Speed on the Water

Surface-piercing propellers and high speed planing hulls with lessons from outboard racing

Joseph L. McCauley Physics Dept. Univ. of Houston Houston, Tx. 77204 outboard_services@mccauleyandson.com

Table of contents

Hans Küffner-McCauley
1. Hydrodynamics I
  • 1.1 Euler’s equation
  • 1.2 Mass conservation
  • 1.3 Shear, drag, and viscosity
  • 1.4 The Reynolds number and scaling
  • 1.5 Vorticity, the boundary layer, and the wake
  • 1.6 The turbulent boundary layer
2. Propeller efficiency and scaling
  • 2.1 Propeller approximated as an ‘actuating disc’
  • 2.2 Full versus partial submersion
  • 2.3 A propeller blade creates a helical wake
  • 2.4 Scaling of thrust, torque, power, and efficiency
  • 2.5 Mechanical efficiency of propellers
Scaling laws for optimal performance
  • 3.1 Scaling of propeller diameter with power and RPM
  • 3.2 Scaling of speed with power and weight
  • 3.3 Optimizing acceleration and top speed
4. Hydrodynamics II: Form drag and wakes
  • 4.1 Dynamics of vorticity and vortices
  • 4.2 Boundary layer separation and eddy creation
  • 5. Lifting surfaces
    • 5.1 How an airplane flies, how a propeller propels
    • 5.2 Theory of lift and drag on a wing
    • 5.3 Camber
    • 5.4 Lift and Drag on a finite wingspan
    • 5.5 Supercavitation
    • 5.6 Ground effect
    6. High performance propellers
    • 6.1 Propeller blades are twisted rotating hydrofoils
    • 6.2 Surface piercing and efficiency
    • 6.3 Mathematics of propellers and design
    • 6.4 History of cleavers and surface-piercing props
    • 6.5 Guidelines for surface-piercing props
    7. High performance boat set-up
    • 7.1 High performance with no size restriction
    • 7.2 Fast boat bottoms and set-up
    • 7.3 Planing speed
    • 7.4 Camber, center of pressure and stability of a tunnel
    • 7.5 Rake, prop riding, unusual gearcases, and world speed records
    • 7.6 Racing today


    Link for Shorter Paper on Propeller Theory