Patent ID: 8672630

Claim:
A turbine ring rotor comprising: first and second annular tip shrouds defined about an axis; first and second annular bases defined about said axis; a plurality of first turbine blades mounted between said first annular tip shroud and said first annular base; a plurality of second turbine blades mounted between said second annular tip shroud and said second annular base, said second turbine blades spaced, relative to the axis, from said first turbine blades; and wherein each of said first and second of turbine blades defines a turbine blade passage therethrough, each of said turbine blade passages extending through a respective one of said first and second annular tip shrouds and a respective one of said first and second annular bases, said turbine blade passages arranged such that fluid flowing through said turbine blade passages is later expanded over said first turbine blades.