Waterjets have been used to propel marine vehicles in various forms for more than 300 years. The Author identifies some of the critical areas in waterjet systems as being: (1) Waterjet inlet and ducting design, (2) On board water weight, and (3) Internal hydrodynamic form and friction losses. He discusses the influence of these and other factors such as external-inlet drag and pump and inlet cavitation. Several types of application of a water jet are described in detail such as for small sporting craft, hydrofoils, conventional hulls and surface effect ships. In conclusion the Author states that waterjet propulsion of marine craft is now beginning to find wide-spread application, despite its inherently lower efficiency compared with the open marine propeller, since these devices offer advantages as regards safety, acceleration, shallow draught capability, and gear and drive-train reliability (especially at high powers).

  • Supplemental Notes:
    • Presented at December 1976 Winter Annual Meeting of the American Society of Mechanical Engineers.
  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  United States  10016-5990
  • Authors:
    • Etter, R J
  • Publication Date: 1976

Media Info

  • Features: References;
  • Pagination: 31 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00179250
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Aug 19 1978 12:00AM