Northrop Grumman Systems Corporation

Alliant Techsystems Inc.

Northrop Grumman Innovation Systems, Inc.

Ronald G Mellus

Jeremy D Palmer

Edwin Dean S Oba

Jared K Olson

Travis A Bodrero

Inspection devices include a nozzle portion having at least one opening and a transducer disposed in a rear chamber of a housing. The housing has at least one fluid channel defined in the housing and extending along at least a portion of the rear chamber. The at least one fluid channel is configured to supply a fluid into a forward chamber of the housing proximate the transducer. Related methods include operating an inspection device.

Inspection devices and related systems and methods

Inspection devices include a nozzle portion having at least one opening and a transducer disposed in a rear chamber of the housing. The housing has at least one fluid channel defined in the housing and extending along at least a portion of the rear chamber. The at least one fluid channel is configured to supply a fluid into a forward chamber of the housing proximate the transducer. Related methods include operating an inspection device.

A device for measuring the volume resistivity of materials and method of measuring are disclosed. The device for measuring has a receptacle of a known volume in which fluid materials, for example powdered or granular materials which may assume the shape of the receptacle, may be placed. The receptacle may have an insulating body and electrodes in the form of conductive end caps on either longitudinal end of the body. The resistance across the device, between the electrodes, may be measured. The volume resistivity of the fluid materials may be determined using the known volume of the receptacle and the resistance.

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Erda, UT, United States of America

Ronald G Mellus