The Boeing Company

Kevin R Malone

Diane C Rawlings

Stephen G Moore

Larry K Olli

Micheal E Dickson

James Charles McGarvey

Philip M Lemoine

G Micheal Granger

A multilayer construction for aerodynamic riblets includes a first layer composed of a material with protuberances, the first layer material exhibiting a first characteristic having long-term durability and a second layer composed of a material, exhibiting a second characteristic with capability for adherence to a surface.

Rigid tipped riblets

Coating production systems and methods which include ultrasonic dispersion and active cooling. The system includes a mixing reservoir and an ultrasonic disperser for ultrasonically dispersing an additive with another coating component within the mixing reservoir. The system also includes a heat exchanger in communication with the mixing reservoir to receive a mixture of the additive and another coating component from the mixing reservoir. The mixture is cooled by thermal energy transfer from the mixture to the heat exchanger. The cooled mixture is returned to the mixing reservoir.

Coating production systems and methods with ultrasonic dispersion and active cooling

Thin film metal particulates are removed from FEP sheetstock cheaply and quickly by immersing the coated FEP first in a base and then in an acid. Occasionally, ultrasonic vibration of the FEP may also be required. The particulates are useful as paint pigments when isolated and conversion coated. The FEP is reusable. A preferred binder for carrying the pigments is a two-component system having a tetraketimine and an isocyanate.

Coating

Thin film metal particulates are removed from FEP sheetstock cheaply and quickly by immersing the coated FEP first in a base and then in an acid. Occasionally, ultrasonic vibration of the FEP may also be required. The particulates are useful as paint pigments when isolated and conversion coated. The FEP is reusable.

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Renton, WA, United States of America

Kevin R Malone