The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 1989
Filed:
Nov. 19, 1987
Jean-Pierre R Guezou, Athis -Mons, FR;
Bertrand Lambati, Paris, FR;
Robert Balquet, Paris, FR;
Michel Machabert, Meurthe-et-Mosselle, FR;
Etat Francais, Paris, FR;
Abstract
The invention relates to a propulsion and lift system for speed boats with a submerged foil. According to the invention, foil (4) includes main lifting surface (11) and hinged trailing edge aileron (12) as well as components (14, 25; 15, 16) to inject gas at high velocity from the lower surface of the main lifting surface and the upper surface of the trailing edge aileron. This provides lift at low speed, in particular lift augmenting at takeoff and defines a nozzle (13) with a two-phase flow which alone provides propulsion at high speed by expansion of a gas-liquid emulsion in said nozzle. Application is to the design of fast hydrofoils.