Patent ID: 8297925
Filing Date: 2012-10-30
Classification: F01D,F05D,Y02T

Abstract:
1. A turbine blade for use on a rotor, the blade comprising: a pressure wall; a leading edge; a trailing edge; a root portion; a blade tip region; and a suction wall, wherein the pressure wall and the suction wall are joined together at the leading and trailing edges, the pressure wall and the suction wall define a hollow chamber through which cooling air is directed in use from the root portion to the blade tip region only, at least one of the pressure wall and the suction wall defines a plurality of elongate and radially extending ribs having a width and height, each of the ribs extending from one of the pressure wall and the suction wall into the hollow chamber, and at least a portion of each of the plurality of ribs tapers in the radial direction between the root portion and the blade tip region.