초록 ▼

A hot gas impinged turbine blade suitable for use under super-heated gas operating conditions has a hollow ceramic blade member and an inner metal support core extending substantially radially through the hollow blade member and having a radially outer widened support head. The support head has radi

A hot gas impinged turbine blade suitable for use under super-heated gas operating conditions has a hollow ceramic blade member and an inner metal support core extending substantially radially through the hollow blade member and having a radially outer widened support head. The support head has radially inner surfaces against which the ceramic blade member supports itself in a radial direction on both sides of the head. The radially inner surfaces of the head are inclined at an angle to the turbine axis so as to form a wedge or key forming a dovetail type connection with respectively inclined surfaces of the ceramic blade member. This dovetail type connection causes a compressive stress on the ceramic blade member during operation, whereby an optimal stress distribution is achieved in the ceramic blade member.

대표청구항 ▼

In a hot gas turbine blade having a metal support core and a ceramic blade member held by said metal support core for use under superheated gas operating conditions, said ceramic turbine blade member having a longitudinal blade axis extending substantially radially relative to a rotational turbine a

In a hot gas turbine blade having a metal support core and a ceramic blade member held by said metal support core for use under superheated gas operating conditions, said ceramic turbine blade member having a longitudinal blade axis extending substantially radially relative to a rotational turbine axis, the improvement comprising a metal support head at a radially outer end of said metal support core, said metal support head having blade support shoulders with surfaces facing substantially radially inwardly, said blade support surfaces of said blade support shoulders being inclined at an angle (g