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Multiple piece turbine blade/vane

United States Patent

February 5, 2013
View the Complete Patent at the US Patent & Trademark Office
An air cooled turbine blade or vane of a spar and shell construction with the shell made from a high temperature resistant material that must be formed from an EDM process. The shell and the spar both have a number of hooks extending in a spanwise direction and forming a contact surface that is slanted such that a contact force increases as the engaging hooks move away from one another. The slanted contact surfaces on the hooks provides for an better seal and allows for twisting between the shell and the spar while maintaining a tight fit.
Kimmel; Keith D (Jupiter, FL)
Florida Turbine Technologies, Inc. (Jupiter, FL)
12/ 795,796
June 8, 2010
GOVERNMENT LICENSE RIGHTS This invention was made with Government support under contract number DE-FG02-07ER84668 awarded by Department of Energy. The Government has certain rights in the invention.