Patent ID: 6503053
Filing Date: 2003-01-07
Classification: F01D,F04D,F05D,Y10S

Abstract:
A blade with optimized vibration behavior for turbomachinery components in an axial type of construction, said blade being selected from a moving blade and a guide blade for a low-pressure tine region of gas turbines, said blade having a solid, thinly-profiled blade body which is elongated in the direction of a radial stacking axis, said blade having a convex suction side extending between a leading edge and a trailing edge and a concave pressure side extending between the leading and trailing edge, said blade, at a radial distance from both a radially inner blade body end and a radially outer blade body end, having at toast one rib which is disposed in an upright position on a surface of the concave pressure side of the blade body and is oriented in a neutral manner with regard to a local flow path without a relevant angle of incidence to the local flow path, said rib being integrally connected to the blade body and having a free edge extending over most of the length at the rib and approximately along a line extending between the leading and the trailing edges.