Turbine blade with spar and shell [electronic resource].
Published
Washington, D.C. : United States. Dept. of Energy, 2012. Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
A turbine blade with a spar and shell construction in which the spar and the shell are both secured within two platform halves. The spar and the shell each include outward extending ledges on the bottom ends that fit within grooves formed on the inner sides of the platform halves to secure the spar and the shell against radial movement when the two platform halves are joined. The shell is also secured to the spar by hooks extending from the shell that slide into grooves formed on the outer surface of the spar. The hooks form a serpentine flow cooling passage between the shell and the spar. The spar includes cooling holes on the lower end in the leading edge region to discharge cooling air supplied through the platform root and into the leading edge cooling channel.
Published through SciTech Connect. 04/24/2012. "8,162,617" "US patent application 12/022,217" Davies, Daniel O. (Palm City, FL); Peterson, Ross H. (Loxahatchee, FL).