Patent ID: 8033790

Claim:
A multiple piece turbine airfoil, comprising: at least one component forming a generally elongated airfoil with an outer wall having a leading edge, a pressure side, and a suction side, wherein the at least one component forming a generally elongated airfoil includes at least one spar receiving chamber; a trailing edge component sized to mate with a downstream end of the at least one component forming a generally elongated airfoil; an airfoil tip with a perimeter configuration that matches a perimeter formed by the at least one component forming a generally elongated airfoil and the trailing edge component and includes at least one spar receiving recess with an outer portion having a larger cross-sectional area than an inner portion; a root formed from separate first and second root sections that together form an airfoil receiving cavity for containing an inner end of the at least one component forming a generally elongated airfoil and an inner end of the trailing edge component; and at least one spar extending from the airfoil tip, through the at least one component forming a generally elongated airfoil, and into the airfoil receiving cavity of the first and second root sections to secure the at least one component forming a generally elongated airfoil, the trailing edge component and the airfoil tip to the root.