Patents by Inventor Neal E. Hass

Neal E. Hass 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).

  • Method of simulating flow-through area of a pressure regulator
    Patent number: 7890311
    Abstract: The flow-through area of a pressure regulator positioned in a branch of a simulated fluid flow network is generated. A target pressure is defined downstream of the pressure regulator. A projected flow-through area is generated as a non-linear function of (i) target pressure, (ii) flow-through area of the pressure regulator for a current time step and a previous time step, and (iii) pressure at the downstream location for the current time step and previous time step. A simulated flow-through area for the next time step is generated as a sum of (i) flow-through area for the current time step, and (ii) a difference between the projected flow-through area and the flow-through area for the current time step multiplied by a user-defined rate control parameter. These steps are repeated for a sequence of time steps until the pressure at the downstream location is approximately equal to the target pressure.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: February 15, 2011
    Assignee: United States of America as represented by the Administrator of the National Aeronautics and Space Adminstration
    Inventors: Neal E. Hass, Paul A. Schallhorn
  • Method of simulating flow-through area of a pressure regulator
    Publication number: 20090287460
    Abstract: The flow-through area of a pressure regulator positioned in a branch of a simulated fluid flow network is generated. A target pressure is defined downstream of the pressure regulator. A projected flow-through area is generated as a non-linear function of (i) target pressure, (ii) flow-through area of the pressure regulator for a current time step and a previous time step, and (iii) pressure at the downstream location for the current time step and previous time step. A simulated flow-through area for the next time step is generated as a sum of (i) flow-through area for the current time step, and (ii) a difference between the projected flow-through area and the flow-through area for the current time step multiplied by a user-defined rate control parameter. These steps are repeated for a sequence of time steps until the pressure at the downstream location is approximately equal to the target pressure.
    Type: Application
    Filed: July 7, 2005
    Publication date: November 19, 2009
    Applicant: USA as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Neal E. Hass, Paul A. Schallhorn