The Boeing Company

Theresa Nadine Ward

Michael G Anderson

Kevin Darrell Pate

Aaron T Purdy

Julie K Bennett

J Sidney Clements

Judson Sid Clements

Eric Richard Steele

David Donald Pokrajac

Alexander Chao

Megan J Hurt

Abdullah Farid Adlouni

A method, apparatus, and computer system for grouping parts. Sets of unigrams are generated from text in part lists for parts in a family of parts using natural language processing, wherein a set of unigrams in the sets of unigrams represent components for a part in the parts. A document term matrix is created using the sets of unigrams. The document term matrix describes a presence of components in the parts. A number of unigrams from the document term matrix that has occurrences in the document term matrix that are greater than a common design threshold is removed. Removing the number of unigrams from the document term matrix forms a processed document term matrix. The common design threshold identifies a level of occurrence not useful in differentiating the parts from each other. The parts are clustered into groups using the processed document term matrix.

Part sorting system

There is provided a method for mitigating static discharge in a fuel container. The method provides a static dissipative coating having a volume resistivity of 1.0&#xd7;10&#x3a9;-m (ohm-meter) or less when measured at 40 V (volts) or less, having a surface resistivity of 1.0&#xd7;10&#x3a9;/sq (ohm per square) or less when measured at 100 V (volts) or less, having a breakdown voltage of 4000 V (volts) or less, and having a charge decay of 60 seconds or less. The method further provides applying the static dissipative coating to a surface of the fuel container to form a coated surface.

Static dissipative fuel tank coatings and methods

Systems and methods for discontinuously applying an insulating primer to a carbon fiber reinforced plastic (CFRP) component are disclosed. In one embodiment, a method for mitigating electrical surface discharges from a CFRP component includes first applying an insulating primer to a metallic component. Next, an insulating primer is applied discontinuously to the CFRP component adjacent the metallic component. The discontinuous application of the insulating primer forms a primed portions and unprimed portions. The unprimed portions are configured to enable electrostatic dissipation.

Application of insulating coating

Systems and methods for determining the dimensions of insulating coating sections applied to a conductive component are disclosed. The method includes providing a specimen having an insulating coating section of a first surface area and a first thickness. The method further includes conducting a test of the specimen for propagating brush discharges. If the specimen exhibits propagating brush discharges, the method further includes reducing at least one of the first surface area and the first thickness to produce at least one of a second surface area or a second thickness, or reducing a first maximum distance that any portion of the insulating coating may extend from an adjacent static dissipative feature to produced a second maximum distance. In additional embodiments, insulating coating patterns may be established on the component based on at least one of the dimensions of the second surface area, the second thickness, or the second maximum distance.

Dimensions determination for insulating coatings

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Redmond, WA, United States of America

Theresa Nadine Ward