Alliedsignal Inc.

Ronald J Rich

Devinder N Katariya

Bruce D Wilson

Steven C Stenard

Michael James Cave

Daniel M Voron

Bob Elliott

Robert G Minnick

Rita A Peralta

A unitary composite stator vane for a gas turbine engine comprising an aerodynamically configured airfoil section, a foot extending substantially perpendicularly from one end of the airfoil section, and a smoothly contoured transition section interconnecting the airfoil section with the foot. The stator vane is comprised of a composite material including a plurality of compression molded, heat cured plies. The plies include a plurality of centrally located internal plies of reinforcement material of continuous yarns of para-aramid fibers. On each side of the internal plies are plies of resin impregnated graphite fiber material. The graphite fibers are protected by an external steel wire mesh ply covering the leading edges of the vanes. Substantially all of the internal para-aramid reinforcement fibers are discontinuous proximate the transition section between the airfoil section and foot.

Tear-away composite fan stator vane

A rotor assembly for a gas turbine engine has a disc with dovetail grooves and a plurality of blades with dovetail roots contoured to be received within the grooves. The inner surface of a flexible, high temperature, low compression set seal is bonded to the inner surface of each root portion. The outer surface of the seal has two portions inclined at an angle and spaced apart to define a surface portion for sealingly contacting the base of the groove. The longitudinal edges of the outer surface are curved to facilitate assembly.

Elastomeric seal for axial dovetail rotor blades

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Phoenix, AZ, United States of America

Ronald J Rich