Foster-miller, Inc.

Aztex, Inc.

Other

United States of America As Represented by the Secretary of the Air Force

Glenn A Freitas

Thomas G Campbell

Joseph S Boyce

Thomas M Fusco

Constance Lee Magee

John J Harris

Kevin Edward Keough

Richard Terrazzano

Eric J Blaney

Garry Kasten

Sara E Rosenberg

William J Hurley, Jr

Daniel E Bullock

Edward Kunkel

Eric Blaney

David Rich

Brian Tweed

A continuous intersecting braided composite preform including a first member with at least one ply of biased fibers and a second member also with at least one ply of biased fibers. The first member intersects with the second member and passes continuously through the second member such that the biased fibers of the first member are interstitially arranged with respect to the biased fibers of the second member at the intersection.

Continuous intersecting braided composite structure and method of making same

A method of making a perforated laminate wherein a pliable perforation device having plurality of holes and plurality of perforation pins in the holes is assembled on a laminate; the pins are driven through the uncured laminate to perforate the laminate; the laminate is then staged or cured with pins in place; and the pins are then removed from the cured laminate and pushed back into the perforation device for reuse thereof.

Method of manufacturing a perforated laminate

A continuous intersecting braided composite preform including a first member with at least one ply of biased fibers and a second member also with at least one ply of biased fiber. The first member intersects with the second member and passes continuously through the second member such that the biased fibers of the first member are interstitially arranged with respect to the biased fibers of the second member at the intersection.

Continuous intersecting braided composite structure and method of making

A method of manufacturing a composite turbine rotor in which blade coupons are fabricated from flat braided fabrics that have extending axial fibers. The extending axial fibers are then woven between the plies of polar woven fabric which make up the body of the rotor. This preform assembly is then impregnated with resin and cured. The blade coupons make up the blades of the rotor and can be made to have an airfoil shape, a curved shape, or a twisted shape by the use of blade formation tools designed for forming the rotor preform.

Composite turbine rotor

A braiding machine carrier having a frame; a fiber spool mount attached to the frame; a fiber take-up assembly including a spiral spring; gear train on the frame for mechanically connecting the take-up spring assembly to the fiber spool mount for winding the spiral spring as a spool on the mount rotates; and a magnetic clutch, coupled to the take-up spring assembly, for preventing overwinding of the spiral spring.

Braiding machine carrier with clutch

An improved stiffener reinforced assembly and method. There is a skin member and a stiffener member including a web portion, a flange portion, and a radius region interconnecting the web portion and the flange portion. The flange portion resides on the skin member. A plurality of reinforcing pins are disposed through the radius region of the stiffener member and into the skin member to secure the stiffener member to the skin member.

Stiffener reinforced assembly and method of manufacturing same

An ultrasonic fastening system wherein an ultrasonic transducer is used to insert a plurality of fasteners supported by a compressible member into two components to be joined or a single composite part to be reinforced.

Ultrasonic fastening system and method

A reinforced foam core sandwich structure including opposing face sheets, a foam core therebetween, and tow members encapsulated within the foam core and extending between the opposing face sheets to form a combined foam/tow member core wherein the compressive strength or shear strength of the combined foam/tow member core is greater than the compressive strength or shear strength, respectively, of the foam core alone or the tow members alone forming a support structure within the foam core between the face sheets.

Truss reinforced foam core sandwich

A method of joining composite parts including disposing reinforcing elements through the thickness of two composite adherends to be joined, at least a number of the reinforcing elements extending from the joint surface of each adherend; assembling the adherends so the joint surface of one faces the joint surface of the other defining a joint region therebetween, wherein the extending reinforcing elements are interstitially disposed in the joint region; and disposing an adherent within the joint region about the interstitially disposed reinforcing elements and the joint surface for providing an improved and reinforced joint.

Reinforced joint for composite structures and method of joining

A reinforced foam core sandwich structure including opposing face sheets, a foam core therebetween, and tow members encapsulated within the foam core and extending between the opposing face sheets forming a support structure within the foam core between the face sheets.

Method of forming a truss reinforced foam core sandwich structure

A method of and system for inserting reinforcing pins in a composite structure in which a number of reinforcing pins are inserted in a compressible material; the compressible material/pin combination is assembled on the composite structure; ultrasonic energy is applied to the pins; and pressure is applied simultaneously with the application of ultrasonic energy to compress the compressible material and insert the pins into the composite structure to join two laminates or reinforce a single composite structure.

Method and system for inserting reinforcing elements in a composite

A nonmetallic tubular structure and method of making the same comprising a tubular ceramic linear surrounded by a thermal insulating composite tube and an outer braided sleeve of a graphite fiber/epoxy composite tensioned to generate compressive stresses in the ceramic liner and maintained in compression by curing the sleeve while under tension.

Growing community of inventors

Foxboro, MA, United States of America

Glenn A Freitas