Friction stir welded hollow airfoils and method therefor

Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Hollow

Reexamination Certificate

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C416S233000, C416S235000

Reexamination Certificate

active

10846326

ABSTRACT:
A hollow component for gas turbine engine, for example an outlet guide vane, is assembled from a body having at recessed pocket formed therein, and an aerodynamic cover bonded over the pocket. Both the cover and the body are constructed from materials which are not readily fusion weldable. The cover is attached to the body by a solid state bonding process, for example friction stir welding. The hollow component may also be built up from multiple individual components which are bonded to each other by a solid state bonding process such as friction stir welding.

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