WATER-TUNNEL TESTS OF BASE-VENTED TORPEDO MODELS

Abstract

Tests were performed in a free-surface water tunnel to determine the ventilated-drag characteristics of truncated torpedo models. The streamlined, fully wetted model used for comparison in the experiments was a body of revolution with a fineness ratio of 8 : 1 and a diameter of 2 inches. The drag based on body volume for most of the vented, truncated models was equal to the drag of the streamlined, fully wetted model. One particular model, with a short, boattailed afterbody, was the best of the vented configurations from the standpoint of combined low drag and low air flow. At no time during the tests did any of the models ventilate forward of the base.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1964
Accession Number
AD0608400

Entities

People

  • H. V. Patrick
  • T. G. Lang

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Flow
  • Coefficients
  • Diameters
  • Drag
  • Dynamic Pressure
  • Flow
  • Flow Rate
  • Fluid Dynamics
  • Fluid Mechanics
  • Free Stream
  • Gas Flow
  • Hydrodynamics
  • Mechanics
  • Physics Laboratories
  • Reynolds Number
  • Test Facilities
  • Water Tunnels

Readers

  • Aerodynamics/Aeronautics.
  • Marine Propulsion Engineering and Naval Architecture