EXPERIMENTAL PERFORMANCE OF TMB SUPERCAVITATING PROPELLERS 3767, 3768, 3769, 3770, 3785, AND 3820

Abstract

Six TMB 3-bladed supercavitating propellers were tested for powering performance in the 24-inch variable pressure water tunnel at several cavitation indices over a range of speed coefficients. The thrust, torque, and rpm were measured with the 150-hp dynamometer. The water velocity during the tests was measured with a pitot tube mounted in the plane of the propeller blade centerline at a radial distance of ten in. from the shaft centerline. The pitot tube openings are connected to a mercury monometer allowing the average water speed to be measured within + or 0.1 fps. The tunnel pressure is also measured by means of mercury monometers. A telescopic sight is provided for reading the mercury level. In this way the tunnel pressure can be maintained to within + or - 0.01 psi. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1961
Accession Number
AD0262232

Entities

People

  • J.g. Peck
  • Richard Hecker

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Pitot Tubes
  • Propeller Blades
  • Propellers
  • Supercavitating Propellers
  • Telescopic Gun Sights
  • Tubes
  • Tunnels
  • Variable Pressure
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Fluid Dynamics.
  • Marine Propulsion Engineering and Naval Architecture

Technology Areas

  • Space
  • Space - Hall-Effect Thruster
  • Space - Spacecraft Maneuvers