Controlled spark ignition testing apparatus

摘要

A high voltage differential is applied across two separated electrodes by a voltage 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.