Patents by Inventor Lars-Olof Pekkari

Lars-Olof Pekkari 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).

  • Controlled temperature rocket nozzle
    Patent number: 6318071
    Abstract: A rocket nozzle having an axial double bell shape. The nozzle includes a first bell shape, a second bell shape and an inflection point where the first bell shape and the second bell shape meet. The inflection point is located between a location at the area ratio &egr;=10 and a location at 0.85×&egr;max of the nozzle, where &egr; is the narrowest cross-sectional area of the nozzle. The first bell shape and the second bell shape both have a contour line having an outwardly directed curvature of between 2 and 7 at the inflection point.
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: November 20, 2001
    Assignee: Volvo Aero Corporation
    Inventors: Jan Häggander, Lars-Olof Pekkari
  • Rocket engine nozzle
    Patent number: 6308514
    Abstract: A rocket engine nozzle with an outlet portion having a curved profile in axial section. In order to control the flow separation occurring within the nozzle outlet, the radius of the outlet portion, in axial section, varies circumferentially in length.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: October 30, 2001
    Assignee: Volvo Aero Corporation
    Inventors: Jan Häggander, Lars-Olof Pekkari
  • CONTROLLED TEMPERATURE ROCKET NOZZLE
    Publication number: 20010023583
    Abstract: A rocket nozzle has axially double bell shape, i.e. is of so-called “Dual Bell” type, and has an outwardly directed change of curvature of the contour line or generatrix at the inflection point between the two bell shapes. For obtaining an improved cooling action on the nozzle wall the change of curvature amounts to between 2° and 7°, said inflection point (I) being located between a location at the area ratio &egr;=10 and a location at 0.85×&egr;max of the nozzle.
    Type: Application
    Filed: July 7, 1998
    Publication date: September 27, 2001
    Inventors: JAN HAGGANDER, LARS-OLOF PEKKARI
  • Rocket engine nozzle
    Publication number: 20010003244
    Abstract: A rocket engine nozzle with an outlet portion having a curved profile in axial section. In order to control the flow separation occurring within the nozzle outlet, the radius of the outlet portion, in axial section, varies circumferentially in length.
    Type: Application
    Filed: January 2, 2001
    Publication date: June 14, 2001
    Applicant: Volvo Aero Corporation
    Inventors: Jan Haggander, Lars-Olof Pekkari
  • Rocket engine nozzle
    Patent number: 6176077
    Abstract: A rocket engine system comprising a single nozzle having a curved profile in axial section. In order to enable a control of the flow separation occurring within the nozzle outlet, the outlet portion in transverse section has a radius, the length of which varies such that the transverse section transitions smoothly from a circular nozzle throat to a polygonal outlet section.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: January 23, 2001
    Assignee: Volvo Aero Corporation
    Inventors: Jan H{umlaut over (a)}ggander, Lars-Olof Pekkari