Skip to Content
Find More Like This
Return to Search

CMC vane assembly apparatus and method

United States Patent

October 23, 2012
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A metal vane core or strut (64) is formed integrally with an outer backing plate (40). An inner backing plate (38) is formed separately. A spring (74) with holes (75) is installed in a peripheral spring chamber (76) on the strut. Inner and outer CMC shroud covers (46, 48) are formed, cured, then attached to facing surfaces of the inner and outer backing plates (38, 40). A CMC vane airfoil (22) is formed, cured, and slid over the strut (64). The spring (74) urges continuous contact between the strut (64) and airfoil (66), eliminating vibrations while allowing differential expansion. The inner end (88) of the strut is fastened to the inner backing plate (38). A cooling channel (68) in the strut is connected by holes (69) along the leading edge of the strut to peripheral cooling paths (70, 71) around the strut. Coolant flows through and around the strut, including through the spring holes.
Schiavo; Anthony L. (Oviedo, FL), Gonzalez; Malberto F. (Orlando, FL), Huang; Kuangwei (Singapore, SG), Radonovich; David C. (Cranberry Township, PA)
Siemens Energy, Inc. (Orlando, FL)
12/ 479,047
June 5, 2009
STATEMENT REGARDING FEDERALLY SPONSORED DEVELOPMENT Development for this invention was supported in part by Contract No. DE-FC26-05NT42646, awarded by the United States Department of Energy. Accordingly, the United States Government may have certain rights in this invention.