Electricity: measuring and testing – Using ionization effects – For analysis of gas – vapor – or particles of matter
Patent
1995-03-06
1997-02-18
Wieder, Kenneth A.
Electricity: measuring and testing
Using ionization effects
For analysis of gas, vapor, or particles of matter
324456, 324536, 324557, G01N 2761
Patent
active
056044380
ABSTRACT:
A high voltage differential is applied across two separated electrodes by a oltage supply. Between these electrodes is located a sample of the solid propellant or other energetic material. The voltage differential across the electrodes generates a spark of measurable voltage, current and time duration in the sample in order to foretell at what energy level sustained ignition of the sample occurs. This spark is measured by a voltage monitor which, upon reaching a predetermined level, sends a signal to a short-circuiting network. The short-circuiting network, after a predetermined time delay, shorts the electrical path across the electrodes thereby removing the voltage differential across the sample and ending the ignition test. An operator is then able to determine visually whether or not the spark of known voltage, current and time duration has created sustained ignition of the sample material. With this information much can be ascertained about the electrostatic hazards of energetic material, thereby making the handling of these materials less dangerous.
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Covino-Hrbacek Josephine
Hudson, III Frank E.
Forrest, Jr. John
Sliwka Melvin J.
Solis Jose M.
The United States of America as represented by the Secretary of
Wieder Kenneth A.
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