Two Phase Water Jet Propulsion for High-Speed Vehicles

Abstract

A water jet propulsion apparatus having an engine producing an exhaust gas, a pump driven by the engine, a nozzle in fluid communication with the pump, and an exhaust passageway communicating between the engine and the nozzle is disclosed. The exhaust passageway is connected to the nozzle at a point in the nozzle where the water flow velocity is being increased, and prior to the water being expanded. By mixing the exhaust with the water while the water flow velocity is being increased, the result is a decrease in the density of the mixture and an increase in the total mass flow rate, thus resulting in increased thrust.

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Document Details

Document Type
Technical Report
Publication Date
Oct 12, 2006
Accession Number
ADD020311

Entities

People

  • Paul M. Dunn

Organizations

  • Naval Undersea Warfare Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Back Pressure
  • Combustion
  • Combustion Chambers
  • Diesel Engines
  • Engines
  • Exhaust Gases
  • Flow Rate
  • Gases
  • Internal Combustion Engines
  • Jet Propulsion
  • Mass
  • Mass Flow
  • Propulsion Systems
  • Water Flow
  • Water Jets
  • Waterjet Propulsion

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Electrical Engineering