Patent ID: 8944773
Filing Date: 2015-02-03
Classification: B23P,B64C,F01D,F04D,F05D,Y02T

Abstract:
1. An airfoil comprising: an airfoil body defining a first major surface of the airfoil; a first internal cavity in the airfoil body, opposite the first major surface; a second internal cavity in the airfoil body, opposite the first major surface; a rib extending along and between the first and second internal cavities; an inner cover bonded to the airfoil body over only a portion of the first and second internal cavities, the inner cover comprising a first coupling element extending along the first internal cavity in cooperative engagement with the rib; and an outer cover bonded to the airfoil body over the inner cover and positioned over the first and second cavities, the outer cover defining a second major surface of the airfoil.