Patent ID: 7413403

Claim:
A turbine engine blade comprising: an attachment root; a platform outboard of the attachment root; an airfoil extending from the platform and having: leading and trailing edges; pressure and suction sides extending between the leading and trailing edges; and a tip; and an internal cooling passageway network having: at least one inlet in the attachment root; and a plurality of outlets along the airfoil, wherein: the cooling passageway network comprises: a leading spanwise cavity; a first trunk feeding the leading spanwise cavity; a streamwise cavity inboard of the tip; a spanwise feed cavity feeding the streamwise cavity absent down-pass; a second trunk feeding the spanwise feed cavity; a mid-body passageway comprising: a first spanwise up-pass; a spanwise down-pass fed by the first spanwise up-pass; and a second spanwise up-pass fed by the spanwise down-pass; a third trunk feeding the first spanwise un-pass; a trailing spanwise cavity; and a fourth trunk feeding the trailing spanwise cavity.