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. 08, 2018
Filed:
Oct. 23, 2012
United Technologies Corporation, Hartford, CT (US);
Loc Quang Duong, San Diego, CA (US);
Xiaolan Hu, San Diego, CA (US);
Gao Yang, San Diego, CA (US);
Steven R. Falconer, Escondido, CA (US);
Ralph E. Gordon, San Diego, CA (US);
Jesus A. Garcia, San Diego, CA (US);
Dan G. Sapiro, Poway, CA (US);
Ulrike Kaul, El Cajon, CA (US);
Gregory G. Johnson, San Diego, CA (US);
Benjamin E. Fishler, San Diego, CA (US);
United Technologies Corporation, Farmington, CT (US);
Abstract
A reduction in excitation amplitudes affecting turbine blade durability in a turbine nozzle assembly having a plurality of vanes and turbine blades, includes: identifying a turbine blade design of the turbine nozzle assembly; performing a modal model analysis of at least one of the turbine blades in the turbine blade design; reducing aerodynamic impact by ensuring that each of the turbine blades is free of aero-excitation from an upstream flow at the vanes in an operating speed range; identifying blade natural frequencies with respect to the nozzle vanes; and modifying a trailing edge of at least one of the vanes to reduce the excitation amplitudes.