Patents by Inventor Anna Wei

Anna Wei 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).

  • Methods and apparatus for reducing vibrations induced to airfoils
    Patent number: 7497664
    Abstract: Methods and apparatus for fabricating a rotor blade for a gas turbine engine are provided. The rotor blade includes an airfoil having a first sidewall and a second sidewall, connected at a leading edge and at a trailing edge. The method includes forming the airfoil portion bounded by a root portion at a zero percent radial span and a tip portion at a one hundred percent radial span, the airfoil having a radial span dependent chord length C, a respective maximum thickness T, and a maximum thickness to chord length ratio (Tmax/C ratio), forming the root portion having a first Tmax/C ratio, forming the tip portion having a second Tmax/C ratio, and forming a mid portion extending between a first radial span and a second radial span having a third Tmax/C ratio, the third Tmax/C ratio being less than the first Tmax/C ratio and the second Tmax/C ratio.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: March 3, 2009
    Assignee: General Electric Company
    Inventors: Robert A. Walter, David Christensen, Caroline Curtis Granda, Jeffrey Nussbaum, Anna Wei, Michael Macrorie, Tara Chaidez
  • Methods and apparatus for reducing vibrations induced to airfoils
    Publication number: 20070041841
    Abstract: Methods and apparatus for fabricating a rotor blade for a gas turbine engine are provided. The rotor blade includes an airfoil having a first sidewall and a second sidewall, connected at a leading edge and at a trailing edge. The method includes forming the airfoil portion bounded by a root portion at a zero percent radial span and a tip portion at a one hundred percent radial span, the airfoil having a radial span dependent chord length C, a respective maximum thickness T, and a maximum thickness to chord length ratio (Tmax/C ratio), forming the root portion having a first Tmax/C ratio, forming the tip portion having a second Tmax/C ratio, and forming a mid portion extending between a first radial span and a second radial span having a third Tmax/C ratio, the third Tmax/C ratio being less than the first Tmax/C ratio and the second Tmax/C ratio.
    Type: Application
    Filed: August 16, 2005
    Publication date: February 22, 2007
    Inventors: Robert Walter, David Christensen, Caroline Granda, Jeffrey Nussbaum, Anna Wei, Michael Macrorie, Tara Chaidez