GAS TURBINE CERMET BLADE Russian patent published in 2011 - IPC F01D5/14 

FIELD: machine building.

SUBSTANCE: axial-flow turbo machine blade consists of metal structural rod, shaped ceramic shell, deflector and two-layer heat isolator embracing deflector. Structural rod comprises stem made up of lock elements and bush flange, and radial rod with support flange on its edge. Support flange accommodates retainer flange made from refractory metal alloy jointed with support flange inner surface. Heat isolation outer layer fits ceramic shell inner edge, while inner layer adjoins radial rod. Radial lengths of ceramic shell, deflector, and two-layer heat isolation are identical and equal to radial distance from bush flange to support flange. Ceramic shell radial shape represents separate segments with boundary surfaces interconjugated and perpendicular to radial axis of structural rod. Inner surface of first segment, if seen from the bush flange, fits bush flange. Outer radial surface of said rod fits inner surface of support flange.

EFFECT: higher reliability.

4 cl, 1 dwg