Patent ID: 8172518
Filing Date: 2012-05-08
Classification: F01D,F05D,Y10T

Abstract:
1. A method for assembling a rotor assembly, said method comprising: providing a rotor blade including a concave first sidewall and a convex second sidewall, wherein the first and second sidewalls are connected at a leading edge and a trailing edge and extend in span from a root portion to a tip portion; removing blade material from the tip portion to form a planar tip portion oriented at an obtuse angle relative to the first sidewall and at an acute angle relative to the second sidewall such that, when the rotor blade is coupled within a casing, a distance measured between the casing and the planar tip portion at the first sidewall is larger than a distance measured between the casing and the planar tip portion at the second sidewall; and coupling the rotor blade to a shaft such that during tip rubs the orientation of the planar tip portion facilitates reducing radial loading induced to the rotor blade.