COMPARISON OF THREE THEORIES OF WATER-JET PROPULSION

Abstract

The three different approaches to derivation of formulae expressing the relations among speed, thrust, power, and efficiency of water-jet propulsion systems, as developed by Lockheed California Company; Virgil Johnson of Hydronautics, Incorporated; and Joseph Levy of Aerojet-General Corporation, are summarized and compared. Certain modifications and simplifications are incorporated, and terminology is modified as necessary to facilitate comparison. The Lockheed system, which provides a method for including the weight and drag of the propulsion system in the optimization procedure, appears to be the more useful. The problems of compromising the performance of the propulsion system at cruising speed in order to provide reasonable hump performance are briefly discussed.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1967
Accession Number
AD0646635

Entities

People

  • John H. Garrett

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Boundary Layer
  • Centrifugal Pumps
  • Computer Programming
  • Engineering
  • Flow Rate
  • Ground Effect
  • Ground Effect Machines
  • Hydrofoil Craft
  • Jet Propulsion
  • Kinetic Energy
  • Marine Engineering
  • Optimization
  • Propulsion Systems
  • Ship Model Basins
  • Surface Effect Ships
  • Water Jets
  • Waterjet Propulsion

Readers

  • Marine Hydrodynamics
  • Software Engineering
  • Theoretical Analysis.