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:
Mar. 03, 2009
Filed:
Aug. 16, 2005
Robert A. Walter, Melrose, MA (US);
David Christensen, Newbury, MA (US);
Caroline Curtis Granda, Concord, MA (US);
Jeffrey Nussbaum, Wilmington, MA (US);
Anna Wei, Swampscott, MA (US);
Michael Macrorie, Winchester, MA (US);
Tara Chaidez, Malden, MA (US);
Robert A. Walter, Melrose, MA (US);
David Christensen, Newbury, MA (US);
Caroline Curtis Granda, Concord, MA (US);
Jeffrey Nussbaum, Wilmington, MA (US);
Anna Wei, Swampscott, MA (US);
Michael Macrorie, Winchester, MA (US);
Tara Chaidez, Malden, MA (US);
General Electric Company, Schenectady, NY (US);
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 (T/C ratio), forming the root portion having a first T/C ratio, forming the tip portion having a second T/C ratio, and forming a mid portion extending between a first radial span and a second radial span having a third T/C ratio, the third T/C ratio being less than the first T/C ratio and the second T/C ratio.