Title:
HYBRID TURBINE BLADE FOR IMPROVED ENGINE PERFORMANCE OR ARCHITECTURE
Document Type and Number:
WIPO Patent Application WO/2014/133635
Kind Code:
A3
Abstract:
A method is provided for casting an article such as a blade having an attachment root and an airfoil, the airfoil having a proximal end and a distal end. The method comprises introducing a molten alloy into a mold; and varying a composition of the introduced alloy during the introduction so as to produce a compositional variation.
Inventors:
SHAH DILIP M (US)
CETEL ALAN D (US)
CETEL ALAN D (US)
Application Number:
PCT/US2013/074956
Publication Date:
November 20, 2014
Filing Date:
December 13, 2013
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP (US)
International Classes:
B22D19/16; B22D25/00; C22C19/03
Foreign References:
| US20100297467A1 | 2010-11-25 | |||
| US20090165988A1 | 2009-07-02 | |||
| JP2011137220A | 2011-07-14 | |||
| US4869645A | 1989-09-26 | |||
| JP2012532250A | 2012-12-13 | |||
| US20050271886A1 | 2005-12-08 |
Other References:
See also references of EP 2931459A4
Attorney, Agent or Firm:
SLATE, William B. (Attn: Pam HouserRe: Pratt & Whitney,900 Second Avenue S., Suite 60, Minneapolis Minnesota, US)
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