Author(s)
William C. Stone
Abstract
A fast response variable amplitude cold gas thruster is described. A laboratory prototype comprised of a piezoelectric stack and an associated microporcessor-based programmable dc power source, a low-loss mechanical displacement amplifier, a high-pressure spring-loaded axial valve, an integral high-pressure valve seat; an expansion nozzle, and a high-pressure gas supply were constructed and tested. The device is designed to operate as a stand-alone unit with a dedicated onboard microcontroller system and onboard energy storage system. Minimum pulse-width resolution (base-to-base) was shown to be 0.98 ms, with a lag time of 0.37 ms relative to the initiation of the drive pulse. Linear amplitude response was achieved beyond a threshold drive voltage of 80 vdc and was maintained through the limit of testing at 240 vdc.
Citation
AIAA Journal of Spacecraft and Rockets
Keywords
cold gas thruster, amplitude control, piezoelectric stack, structural dynamics, predictive models, system identification
Citation
Stone, W.
(1995),
Fast Variable-Amplitude Cold Gas Thruster, AIAA Journal of Spacecraft and Rockets, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=909463 (Accessed April 29, 2026)
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