Patents by Inventor Daniel Le Dortz

Daniel Le Dortz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rocket engine with cryogenic propellants
    Patent number: 9222438
    Abstract: A cyrogenic-propellant rocket engine includes: at least a first tank for a first liquid propellant; a second tank for a second liquid propellant; a third tank for an inert fluid; an axisymmetrical nozzle including a combustion chamber, a device for injecting first and second liquid propellants into the combustion chamber, a nozzle throat, and a divergent section; and a heater device including at least one duct for conveying the inert fluid and arranged outside the nozzle in immediate proximity thereof, but without making contact therewith, to recover energy of thermal radiation emitted when the rocket engine is in operation and to heat the inert fluid.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: December 29, 2015
    Assignee: SNECMA
    Inventors: Olivier Dobek, Daniel Le Dortz
  • Rocket engine with cryogenic propellants
    Patent number: 9222439
    Abstract: A cryogenic-propellant rocket engine includes: at least a first tank for a first liquid propellant; a second tank for a second liquid propellant; a third tank for an inert fluid; an axisymmetrical nozzle including a combustion chamber, a device for injecting first and second liquid propellants into the combustion chamber, a nozzle throat, and a divergent section; and a heater device including at least one duct for conveying the inert fluid and arranged outside the nozzle in immediate proximity thereof, but without making contact therewith, to recover energy of thermal radiation emitted when the rocket engine is in operation and to heat the inert fluid.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: December 29, 2015
    Assignee: SNECMA
    Inventors: Olivier Dobek, Daniel Le Dortz
  • ROCKET ENGINE WITH CRYOGENIC PROPELLANTS
    Publication number: 20120144797
    Abstract: A cyrogenic-propellant rocket engine includes: at least a first tank for a first liquid propellant; a second tank for a second liquid propellant; a third tank for an inert fluid; an axisymmetrical nozzle including a combustion chamber, a device for injecting first and second liquid propellants into the combustion chamber, a nozzle throat, and a divergent section; and a heater device including at least one duct for conveying the inert fluid and arranged outside the nozzle in immediate proximity thereof, but without making contact therewith, to recover energy of thermal radiation emitted when the rocket engine is in operation and to heat the inert fluid.
    Type: Application
    Filed: July 16, 2010
    Publication date: June 14, 2012
    Applicant: SNECMA
    Inventors: Olivier Dobek, Daniel Le Dortz
  • ROCKET ENGINE WITH CRYOGENIC PROPELLANTS
    Publication number: 20120131903
    Abstract: A cryogenic-propellant rocket engine includes: at least a first tank for a first liquid propellant; a second tank for a second liquid propellant; a third tank for an inert fluid; an axisymmetrical nozzle including a combustion chamber, a device for injecting first and second liquid propellants into the combustion chamber, a nozzle throat, and a divergent section; and a heater device including at least one duct for conveying the inert fluid and arranged outside the nozzle in immediate proximity thereof, but without making contact therewith, to recover energy of thermal radiation emitted when the rocket engine is in operation and to heat the inert fluid.
    Type: Application
    Filed: July 16, 2010
    Publication date: May 31, 2012
    Applicant: SNECMA
    Inventors: Olivier Dobek, Daniel Le Dortz