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Propelling nozzle for means of transport in air or water

  • US 4,192,461 A
  • Filed: 10/26/1977
  • Issued: 03/11/1980
  • Est. Priority Date: 11/01/1976
  • Status: Expired due to Term
First Claim
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1. In a transport vehicle for use in air or on water, the new use of a propulsion nozzle comprising:

  • (a) an internal surface;

    (b) a curved leading surface merging into said internal surface;

    (c) a narrowed throat in said internal surface located towards the said curved surface;

    (d) a jacket surrounding said internal surface;

    (e) an annular internal slot located in said internal surface between said curved surface and said narrowed throat and communicating with said jacket;

    (f) an inner edge of said slot not protruding inside the narrowest circumference of the throat;

    (g) means for supplying primary fluid under pressure through said slot;

    the slot being arranged at an acute angle of under 45°

    , to the direction of the exit flow so that the fluid is ejected tangentially to said curved leading edge and the fluid travels with greatest speed next to the internal surface, the fluid injected through the slot being the same as the medium through which the vehicle is being propelled.

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