Tech Briefs

Apparatus Characterizes Transient Voltages in Real Time

Only the most relevant data are recorded. The figure shows a prototype of a relatively inexpensive electronic monitoring apparatus that measures and records selected parameters of lightning induced transient voltages on communication and power cables. The selected parameters, listed below, are those most relevant to the ability of lightning induced transients to damage electronic equipment.

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Measuring Humidity in Sealed Glass Encasements

This noninvasive technique helps in the preservation of valuable documents.

Posted in: Briefs, TSP

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Adaptable System for Vehicle Health and Usage Monitoring

Safety can be increased, while costs and downtime can be reduced. Aircraft and other vehicles are often kept in service beyond their original design lives. As they age, they become susceptible to system malfunctions and fatigue. Unlike future aircraft that will include health-monitoring capabilities as integral parts in their designs, older aircraft have not been so equipped.

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Cryogenic High-Sensitivity Magnetometer

Sensitivity would be about a million times that of a flux-gate magnetometer.

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Wheel Electrometer System

Two documents describe a prototype system of electrometers for measuring electrostatic fields and electrostatic responses of soils on Mars and the Moon.

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Simultaneous Conoscopic Holography and Raman Spectroscopy

Both the topography and the chemistry of surfaces would be mapped.

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Instrumentation for Sensitive Gas Measurements

Measurements are based on cavity-enhanced absorption.

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