Emily A Clausing

US Patent:

20040151590, Aug 5, 2004

Filed:

Jan 31, 2003

Appl. No.:

10/356238

Inventors:

James Forrester - Springboro OH, US
Emily Clausing - Cincinnati OH, US
Robert Grant - Mason OH, US
John Cargill - West Chester OH, US
Craig Higgins - Hamilton OH, US

International Classification:

F01D005/30

US Classification:

416/21900R

Abstract:

A gas turbine engine blade root shim includes a dovetail shim portion with a dovetail shape and a longitudinally extending substantially flat base and distal first and second longitudinally spaced apart forward and aft ends. Transversely spaced apart first and second walls extend upwardly from the base which includes at least two longitudinally extending elongated base apertures. Each of the base apertures includes a main region and longitudinally spaced apart rounded end regions. Dog-bone-shaped base apertures or rounded end base apertures having semicircular rounded end regions may be used. The shim is designed for a blade dovetail root with a root slot formed in a bottom of the dovetail root. The dovetail shim portion with the dovetail shape substantially conforms to at least a portion of a cross-sectional dovetail shape of the dovetail root through the root slot. The base is disposed within the root slot.