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:
May. 07, 2013
Filed:
Dec. 17, 2009
Matthew D. Montgomery, Jupiter, FL (US);
Ching-pang Lee, Cincinnati, OH (US);
Chander Prakash, Oviedo, FL (US);
Matthew D. Montgomery, Jupiter, FL (US);
Ching-Pang Lee, Cincinnati, OH (US);
Chander Prakash, Oviedo, FL (US);
Siemens Energy, Inc., Orlando, FL (US);
Abstract
Plasma generators () in an endwall () of an airfoil () induce aerodynamic flows in directions () that modify streamlines () of the endwall boundary layer toward a streamline geometry () of a midspan region of the airfoil. This reduces vortices () generated by the momentum deficit of the boundary layer, increasing aerodynamic efficiency. The plasma generators may be arrayed around the leading edge as well as between two airfoils () in a gas turbine nozzle structure, and may be positioned at correction points () in streamlines caused by surface contouring () of the endwall. The plasma generators may be oriented to generate flow vectors () that combine with boundary layer flow vectors () to produce resultant flow vectors () in directions that reduce turbulence.