Raytheon Company

William C Strauss

Allen L Kelly

Christopher K Solecki

Richard L Gentilman

Derrick J Rockosi

Brian Gahan

Kevin Chapla

Michael S Schwerer

Kevin M Chapla

An apparatus for producing a layer of vitreous silica adjacent at least a portion of an inner surface of a fused silica body is described, comprising a heat source disposed to apply sufficient heat to at least a portion of the inner surface to cause a layer of said at least a portion of the inner surface to vitrify. In certain embodiments the heat source is configured to heat at one time a relatively small area of the inner surface, and the apparatus comprises a positioning mechanism for moving the heat source with respect to the inner surface. In certain embodiments the heat source is a hydrogen-oxygen surface-mix fueled torch that is moved helically with respect to the inner surface of the body under the control of a programmed CNC motion control system.

Apparatus for producing a vitreous inner layer on a fused silica body, and method of operating same

A fused silica body comprising a layer of vitreous silica adjacent at least a portion of an inner surface is described in embodiments herein. In other embodiments, a method of making a fused silica body with a layer of vitreous silica adjacent at least a portion of an inner surface is described herein, comprising heating at least a portion of the inner surface to the point of vitrification. In certain embodiments, the method involves passing a linear local heat source over the inner surface in a particular manner, such as a helical fashion transverse to the linear shape, and may involve creating on the inner surface of the body overlapping swaths of temporarily melted silica material.

Fused silica body with vitreous silica inner layer, and method for making same

Fused silica body with vitreous silica inner layer and method for making the same

In one embodiment, a temperature sensing apparatus includes two temperature sensors that are disposed at differing depths from a surface and a measurement circuit that is coupled to the temperature sensors. The measurement circuit is operable to calculate the temperature of the surface based on a first temperature of one temperature sensor with a second temperature of the other temperature sensor.

Apparatus for measuring surface temperature using embedded components

According to one embodiment, a connector for a composite structure includes at least one conducting element that is coupled to a node of an electrical circuit embedded in a composite structure. The composite structure has two opposing surfaces in which the conducting element is disposed essentially between the surfaces of the composite structure.

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Westford, MA, United States of America

William C Strauss