The Boeing Company

Other

Jeffrey Denys Morgan

John Richard Porter

Darrin Michael Hansen

Russell Joe Heeter

Kevin Darrell Pate

Dale Winter

Steven C Steckmyer

Daniel R Smith

Quynhgiao Nguyen Le

Robert B Greegor

Harry E Townsend

Thu A Nguyen

Gary E Georgeson

Robert James Miller

Diane C Rawlings

John A Mittleider

Daniel James Kovach

Julie M Drexler

Brent Arthur Whiting

Jeffrey Sutton

James F Huffaker

Embodiments of the presently disclosed system include a thin thermoplastic or thermosetting polymer film loaded with non-polymeric inclusions that are susceptible to heating under a time-varying magnetic field. Insertion of this additional heating layer into a structural or semi-structural heterogeneous laminate provides an 'on-demand' de-bonding site for laminate deconstruction. For example, in some embodiments when the heating layer is inserted between a cured Carbon-Fiber Reinforced Plastic (CFRP) layer and a Polymeric/Metallic film stackup layer, the heating layer can be selectively heated above its softening point (e.g., by using energy absorbed from a locally-applied time-varying magnetic field) to allow for ease of applique separation from the CFRP layer.

Heating layer for film removal

A system and method for testing a material system may include a support structure for mounting the material system, and a electromechanical device operably connected to the support structure, wherein the electromechanical device applies an electromechanical-induced force to the material system, and wherein the electromechanical-induced force causes a displacement in the material system equivalent to material displacement from thermal stress in significantly less time.

System and method for testing a material system

A multilayer composite structure with integrated fastener-to-conductive layer surface lightning protection interconnection employs a conductive layer with an inner surface and a plurality of chamfered recesses forming countersinks in an outer surface. A carbon-fiber reinforced plastic (CFRP) composite layer is disposed on the inner surface of the conductive layer and conforms to the surface shape. A plurality of holes extend through the plurality of chamfered recesses in the conductive layer and the adjoining CFRP composite layer in a manner such that the conductive layer defines a countersink portion extending into the openings of the plurality of holes. The chamfered recesses in the conductive layer provides an electrically conductive surface area that contacts conductive countersunk fasteners installed within the plurality of holes to enable current sharing between groups of neighboring fasteners.

Methods for diverting lightning current from skin fasteners in composite, non-metallic structures

A lightning-protected conductive composite fuel tank includes a conductive material arrayed on an outer surface to at least partially cover a fastener centerline. Through holes extend along the fastener centerline through the conductive material and the underlying fuel tank shell. These through holes are countersunk into the fuel tank shell to a depth such that a fastener in a through hole will avoid electrical continuity or communication with the conductive material on the fuel tank outer surface. The gap in the countersunk through holes, between the fastener heads and the coextensive outer surface of the fuel tank, is filled with a dielectric or nonconductive material.

Lightning protection system for aircraft composite structure

An apparatus comprises a wall, an internal structure, and a fastener. The wall has a conductive surface and a countersunk hole. The countersunk hole passes through the internal structure. The fastener has an interference fit within the countersunk hole.

Lightning protection system for an aircraft composite structure

A three-dimensional word game which is characterized by a base having a grid with one or more squares, selected ones of which are fitted with openings or projections for receiving and anchoring correspondingly-shaped, lettered blocks to facilitate vertical stacking and horizontal extension of the blocks together and spelling words. In a preferred embodiment, the blocks (typically cubes) are designed to connect by such elements as round and truncated pegs, snap flanges, threaded posts and internally-threaded post seats, dovetail slots and tabs, as well as by magnetic attraction. The blocks are typically provided with letters of the alphabet located on at least one side, to facilitate selectively connecting or interlocking the blocks, both vertically and horizontally, to spell words during progression of the game.

Three-dimensional word game

Growing community of inventors

Auburn, WA, United States of America

Jeffrey Denys Morgan