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:
Apr. 23, 2002
Filed:
Jun. 02, 1995
Charles R. LeJambre, Marlborough, CT (US);
Bruce P. Biederman, Meriden, CT (US);
Aaron J. Gleixner, Philadelphia, PA (US);
Chad J. Yetka, West Palm Beach, FL (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A flow directing element, such as a vane for a turbine engine compressor, has a variable chord to improve compressor surge margin without compromising compressor efficiency. The vane has an airfoil section ( ) with a leading edge ( ), a trailing edge ( ), a root ( ) and a tip ( ). The chord of the airfoil generally increases from a first value at the root to a second larger value at a part span location ( ) intermediate the root and the tip so that when the airfoil is installed in a compressor, the location of the trailing edge becomes closer to the compressor discharge as the spanwise distance from the root increases. The chord is generally constant from the part span location to the tip.