Calm Water Equilibrium, Directional Stability and Steady Turning Conditions for Recreational Planing Craft

Abstract

Measurements of steady, symmetric and non-symmetric planing forces and moments on a series of prismatic hulls are tabulated and discussed. An analytical representation of the forces and moments due to an outboard engine is derived. Curve fits of the data together with the outboard engine representation are used to predict: (1) Straight course equilibrium conditions; (2) Directional stability of these equilibrium conditions with roll fixed; and (3) STeady turning equilibrium conditions. A comparison is made between these calculated results and measured turning diameter of a typical full-scale recreational planing craft. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1975
Accession Number
ADA021499

Entities

People

  • Charles J. Henry

Organizations

  • Stevens Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aspect Ratio
  • Center Of Gravity
  • Centrifugal Force
  • Coast Guard
  • Control Systems
  • Coordinate Systems
  • Curve Fitting
  • Data Analysis
  • Equations Of Motion
  • Errors
  • Gravity
  • Measurement
  • Planing Surfaces
  • Propeller Shafts
  • Reynolds Number
  • Standards
  • Trim Angle

Readers

  • Marine Hydrodynamics
  • Structural Dynamics.