Title:
ELECTRICAL GROUNDING FOR BLADE SHEATH
Document Type and Number:
WIPO Patent Application WO/2014/105224
Kind Code:
A3
Abstract:
A blade for use in a gas turbine engine has an airfoil including a leading edge and a trailing edge. A sheath is positioned at the leading edge and secured to the airfoil by a first adhesive formed of a first material. The sheath is formed of a second material that is distinct from said first material. The first material is less electrically conductive than the second material. A grounding element is in contact with the sheath. The grounding element is in contact with a portion of the airfoil formed of a third material that is more electrically conductive than the first material. The grounding element and the portion of the airfoil together form a ground path from the sheath into the airfoil.
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Inventors:
MURDOCK JAMES R (US)
Application Number:
PCT/US2013/057972
Publication Date:
September 18, 2014
Filing Date:
September 04, 2013
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP (US)
International Classes:
F01D5/14; F02C7/20
Foreign References:
| US20120003100A1 | 2012-01-05 | |||
| US20120152893A1 | 2012-06-21 | |||
| US20120082553A1 | 2012-04-05 | |||
| US7780419B1 | 2010-08-24 | |||
| US7399159B2 | 2008-07-15 |
Other References:
See also references of EP 2895699A4
Attorney, Agent or Firm:
OLDS, Theodore W. (Gaskey & Olds/Pratt & Whitneyc/o CPA Global,P.O. Box 5205, Minneapolis Minnesota, US)
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