MANUFACTURE OF A HOLLOW AEROFOIL

摘要

A method of manufacturing a hollow aerofoil component for a gas turbine engine comprises using a capping panel to cover a pocket in a pocketed aerofoil body. The pocketed aerofoil body has a ledge of substantially constant thickness that extends around its perimeter, and to which the capping panel is joined (e.g. welded) during manufacture. This ensures that the geometry of the join is consistent around the perimeter, meaning that the resulting join has improved properties, for example in terms of residual stress and/or distortion.

主权项

1. A pocketed aerofoil body for use in the manufacture of a hollow aerofoil comprising:
an open pocket formed in a surrounding hollowed surface, the edge of the hollowed surface being defined by a pocket contour; and a ledge that extends from the pocket contour, the ledge perimeter being defined by a ledge contour, the ledge having a uniform thickness at its perimeter so as to extend a uniform distance into the pocket from the ledge contour.