Patent ID: 9404369
Filing Date: 2016-08-02
CPC Classification: B23P,F01D,F05D,Y10T

Claim Text:
1. An airfoil comprising: an airfoil body defining a longitudinal axis, the airfoil body including a leading edge and a trailing edge and a first side wall and a second side wall that is spaced apart from the first side wall to define a camber line there between, the first side wall and the second side wall joining the leading edge and the trailing edge and at least partially defining a cavity in the airfoil body; and four ribs each extending longitudinally in the cavity and being laterally spaced apart from each other relative to the longitudinal axis, in at least one plane perpendicular to the longitudinal axis, each of the four ribs connecting the first side wall and the second side wall along respective minimum distance directions perpendicular to the camber line, at least two of the respective minimum distance directions are non-parallel, and each of the four ribs has a homogenous microstructure with regard to microstructural discontinuities, wherein the cavity has a longitudinal span from a base of the airfoil body to a tip end of the airfoil body, with the base being at 0% of the span and a tip end being at 100% of the span, the at least one plane including a first plane located at 0%-33% of the span and a second plane located at greater than 33% of the span; and another plane at greater than 66 percent span wherein the respective minimum distance directions are parallel.