The Boeing Company

Joe Heeter

Jeffrey A Wilkerson

Arlene McKeeman Brown

Kari L Stromsland

Grant J Erickson

Robert Steinle

Tanni Sisco

Richard Bruce Tanner

Antonio Carlos Rufin

Dale Winter

David W Kwolek

Thu A Nguyen

Michael G Parent

Winson Taam

Jeffrey Alan Wilkerson

Systems and methods are provided for fabricating fasteners. One embodiment is an apparatus that includes a fastener. The fastener includes a head, a cylindrical shank that extends from the head and is dimensioned to engage in a fit with a corresponding hole, and a coating that is discontinuously speckled around a circumference of the shank and extends axially along the shank, leaving irregular portions of a surface of the shank exposed. The coating exhibits a higher lubricity than the surface, and the coating exhibits a higher dielectric withstand voltage than the surface.

Fasteners having enhanced electrical energy dispersion properties

A device senses a static charge resulting from the impingement of particles on a surface, such as an aircraft's outer skin. The device includes a sensor adapted to be installed on the surface and a corona guard for guarding against corona discharge from the sensor.

Method and device for measuring static charge

A conductive sleeved fastener assembly includes an electrically-conductive fastener having a fastener head and a fastener shank extending from the fastener head and an electrically-conductive fastener sleeve receiving the fastener shank of the fastener and a fastener sleeve flange provided on the fastener sleeve and disposed in direct contact with the fastener head of the fastener. A method of preparing a conductive sleeved fastener for use is also disclosed.

Conductive sleeved fastener assembly

A precipitation static sensor includes a bottom flexible dielectric layer (e.g., a layer of urethane tape) configured to be attached to a wing or other external surface of an aircraft, a flexible conductive layer (e.g., a layer of aluminum tape) formed over a portion of the first flexible dielectric layer, and a conductor (such as a twisted-pair wire) coupled to the flexible conductive layer. A top flexible dielectric layer is formed over a portion of the bottom dielectric layer and a portion of the flexible conductive layer, thus forming an exposed detector region. In accordance with a further embodiment, multiple such precipitation static sensors are used and coupled to a meter device (e.g., a picoammeter), which may also be coupled to a data acquisition and display for providing a visual indication of the charge accumulated by the precipitation static sensors.

Methods and apparatus for an in-flight precipitation static sensor

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Sammamish, WA, United States of America

Joe Heeter