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:
Dec. 03, 2013
Filed:
Mar. 24, 2011
Yehia El-aini, Tequesta, FL (US);
William B Diggs, West Palm Beach, FL (US);
Yehia El-Aini, Tequesta, FL (US);
William B Diggs, West Palm Beach, FL (US);
Florida Turbine Technologies, Inc., Jupiter, FL (US);
Abstract
A process for designing a labyrinth seal for flutter avoidance in which a computer generated Finite Element model of the lab seal is produced, the geometric parameters of the lab seal is determined, the lab seal flow parameters are determined, the solid model of the lab seal is analyzed using a finite element analysis program for a range of nodal diameters to determine frequencies and mode shapes, an aerodynamic damping and mechanical damping for the labyrinth seal is determined, and if the sum of the aerodynamic and mechanical damping is negative one or more of the labyrinth seal parameters are changed and the analysis is repeated.