Rtx Corporation

Benjamin Bedard

Tahany Ibrahim El-Wardany

Krzysztof Barnat

Randy P Salva

Andrzej Ernest Kuczek

Michael A Klecka

Sonia Martinez

An airfoil includes an airfoil body and a sheath. The airfoil body includes a first metallic material and the sheath includes a second metallic material. An interface connects the sheath to the airfoil body such that the sheath covers a forward edge of the airfoil body to define an airfoil leading edge. The interface includes bulk metallic glass bonding the sheath to the airfoil body.

Cost-effective solid-state deposition of functionally graded titanium hollow fan blade sheath for improved galvanic corrosion resistance

A system for deep rolling a fan blade including a shaft assembly disposed along a first axis; a hub connected to a distal end of the shaft assembly, the hub having an upper hub portion and a lower hub portion extending along a second axis, the second axis forming an angle relative to a first axis; a roller disk joined to the lower portion of the hub, the roller disk configured to contact a fan blade; a fixture supporting the fan blade; the fixture comprising a body supporting a pivot clamp attached to the body with a pivot; a support attached to the body, the support is configured to engage an airfoil portion of the fan blade; a receiver formed in the body for supporting a root of the fan blade; and a shoulder attached to the body configured to support a platform portion of the fan blade.

Surface treatment system design for high fatigue life hollow fan blades

A mechanical surface treatment method for a workpiece includes using a multi-axis powered machine to actuate a deep rolling tool having a roller relative to the workpiece. The actuating includes applying the roller against a workpiece surface with a normal force sufficient to plastically deform the workpiece and translating the roller relative to the workpiece surface. The method includes concurrently applying an electrical current to the workpiece surface in a manner that produces an electroplastic effect at the workpiece surface and a near surface region. The electroplastic effect and the plastic deformation produce a refinement in a grain structure at the workpiece surface and near surface region and an increase in dislocation sources and tangles within the grain structure.

Growing community of inventors

Manchester, CT, United States of America

Benjamin Bedard