Raytheon Technologies Corporation

Aurelia Ledbetter

Michael G McCaffrey

Christopher King

Karl A Mentz

Stephen D Doll

A process for manufacturing a composite rotor blade includes manufacturing an oversized root region of a root region of a composite rotor blade; fixturing the CMC blade into a machining fixture at a primary Y and Z axis datum located at an attachment fillet radii of the root region; machining V-notches into the oversized root region to form a Y' and Z&#x2032; axis datum of a sacrificial datum system in relation to the primary Y and Z axis datum; applying an oversized coating layer over the attachment fillet radii of the root region; fixturing the CMC blade into a machining fixture at the Y&#x2032; and Z&#x2032; axis datum of the sacrificial datum system; machining the oversized coating layer to a machined coating layer forming a Y&#x2033; and Z&#x2033; axis datum with respect to the Y&#x2032; and Z&#x2032; axis datum of the sacrificial datum system; fixturing the CMC blade into a machining fixture at the Y&#x2033; and Z&#x2033; axis datum; and machining off the sacrificial datum system removing the V-notches.

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Woodstock, CT, United States of America

Aurelia Ledbetter