Patent ID: 8632327
Filing Date: 2014-01-21
Classification: B29C,F01D,F05D

Abstract:
1. An apparatus for applying a texture to an airfoil surface, comprising: a substantially cylindrical drum having a first drum end and an opposing second drum end defining a drum length therebetween, a longitudinal axis therethrough extending from said first drum end to said second drum end, and a peripheral surface disposed along said drum length; wherein said peripheral surface comprises a base surface with a plurality of depressed grooves extending into said base surface, and further comprising an index line located at said peripheral surface and extending from said first drum end to said second drum end and being substantially parallel to said longitudinal axis; wherein a perimeter of said substantially cylindrical drum is generally equal to a length of said texture on said airfoil surface; wherein each of said plurality of grooves has a first groove end and a second groove end; and, wherein, for at least a portion of said plurality of grooves, said first groove end terminates at said index line and said second groove end terminates at said index line;