HYDROJET DUCTED PROPULSION SYSTEM: IMPELLER INDUCED VIBRATORY PRESSURES AND PERFORMANCE CHARACTERISTICS

Abstract

A vortex-line theory developed for an impeller in a long duct was used to optimize the design of a Hydrojet impeller. A model Hydrojet with this impeller was instrumented for pressure field and impeller performance measurements. Fluctuating pressures were high near impeller but attenuate to <10% at 0.4D. 1st/2nd/3rd blade frequency harmonics were approximately in ratio of 1.0/0.6/0.25. 0.85 - 0.90 impeller efficiency appears possible.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1966
Accession Number
AD0664518

Entities

People

  • Douglas H. Norrie
  • Malcolm R. Hale

Organizations

  • University of Adelaide

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computer Programs
  • Engineers
  • Geometry
  • Hydrodynamics
  • Marine Propellers
  • Measurement
  • Mechanical Engineering
  • Mechanical Properties
  • Model Basins
  • Naval Architecture
  • Pressure Distribution
  • Pressure Measurement
  • Propulsion Systems
  • Recording Systems
  • Ship Model Basins
  • Shrouded Propellers

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Combustion and Flow Dynamics.
  • Logistics and Supply Chain Management.