The Boeing Company

Jamie J Langabeer

Weidong Song

Jeffrey Hayden Olberg

Jonathan D Robbins

Stephen G Moore

Daniel Joseph Perron

Tia Benson Tolle

Stephen Lee Metschan

Richard V Phillips

Fei Cai

David Eric Gideon

Max Marley Osborne

Gwen Marie Lanphere Gross

Paul David Evans

Hugh A Yap

Josh M Montgomery

Jason J McBain

Nicholas J Zayas

Gerard J Gallo

Steven A Solack

Adam DeVries

Kyler J Kamyszek

Adam Devries

Jason J Mcbain

Paul D Evans

Max M Osborne

A method for forming a composite structure includes the steps of: forming a fiber-reinforced polymer paste to a shape of a cavity of a dry fiber preform structure; heating said dry fiber preform structure having said fiber-reinforced polymer in said cavity to an infusion temperature; infusing resin into said dry fiber preform structure and around said fiber-reinforced polymer; and curing said resin-infused fiber preform structure and said fiber-reinforced polymer at a cure temperature higher than said infusion temperature.

Method for forming a composite structure

An apparatus for depositing a radius filler, made of a homogeneous material, into a groove, formed in a workpiece comprises a chassis, first means for extruding the radius filler along an extrusion axis, second means for providing the homogeneous material to the first means, and third means for compacting the radius filler in the groove. The apparatus also comprises a first sensor configured to provide first-sensor output. The apparatus further comprises a controller, operatively coupled to the first means, the second means, and the first sensor. Based on the first-sensor output, the controller is configured to determine the first geometric characteristics of the groove. In addition, based on the first geometric characteristics, the controller is configured to control second geometric characteristics of the radius filler, extruded by the first means, as the tool center point is moved relative to the groove.

Apparatuses and methods for applying radius filler

A system for depositing a composite filler material into a channel of a composite structure includes an end-effector configured to extrude a bead of the filler material into the channel. The filler material can comprise a first group of relatively long fibers, a second group of relatively short fibers and a resin. A drive system is configured to move the end-effector relative to the channel, and a position sensor is configured to detect the position of the bead relative to the channel. A controller is configured to operate the drive system in response to the detected position and to operate the end-effector to heat and compress the filler material so as to orient the longer fibers in a substantially longitudinal direction relative to the channel and the shorter fibers in substantially random directions relative to the channel when the bead is extruded into the channel.

Systems and methods for making composite structures

A composite radius filler material is provided. The composite radius filler includes a resin, a first group of fibers dispersed within the resin, and a second group of fibers dispersed within the resin. The first group of fibers has a first length configured to facilitate orientation in a longitudinal direction. The second group of fibers has a second length that is shorter than the first length, with the second group of fibers configured to facilitate random orientation in a transverse direction.

Systems and methods for composite radius fillers

A thermoplastic composite structure is produced by extruding a bead of composite material to a desired cross sectional shape. An extruder extrudes the polymer bead containing reinforcing fibers, using a low compression first extruder stage where the polymer is mixed and de-gassed, and a high compression second stage where the polymer is consolidated and extruded. The cross sectional profile of the polymer bead may be altered using a variable extruder gate.

Extrusion apparatus and method using variable extrusion gate

To an aircraft stringer, a strap is inserted lengthwise through a stringer of an aircraft fuselage, a first end of the strap is secured to a first end of a length of insulation, and the first end of the length of insulation is drawn into a first end of the stringer in response to pulling a second end of the strap.

Tooling for insulating aircraft stringers and method

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Everett, WA, United States of America

Jamie J Langabeer