GENERAL RESISTANCE TEST OF A STEPPED PLANING HULL WITH APPLICATION TO A HYDROFOIL CONFIGURATION.

Abstract

General resistance tests of TMB Model 4776, a transverse stepped planing hull, were conducted. The hull is the third model tested to determine suitability for use as a hydrofoil hull. Resistance, trimming moment, and wetted lengths were measured for several load, trim, and speed conditions. All data are presented in nondimensional form for use in comparing hull forms. The tests indicated that the model at high speed coefficients has low moment and resistance characteristics which would be advantageous to a hydrofoil configuration. Although instabilities due to spray and inadequate step ventilation were found, the trim conditions at which these instabilities occur can be avoided during the normal takeoff operation. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1967
Accession Number
AD0654900

Entities

People

  • Lawrence Benen

Tags

DTIC Thesaurus Topics

  • Coefficients
  • Hulls (Marine)
  • Hydrofoils
  • Instability
  • Planform
  • Resistance
  • Shape
  • Transverse
  • Ventilation

Readers

  • Marine Hydrodynamics
  • Systems Analysis and Design