June 18, 2026
Commissioning a Pulsed Plasma Propulsion Test Stand
Early commissioning work on a vacuum test platform for repeatable low-energy pulsed plasma experiments.
We have begun commissioning a laboratory test stand for low-energy pulsed plasma propulsion experiments. The facility is designed for component-level studies of discharge repeatability, power-processing behavior, electrode wear, and diagnostic methods relevant to compact spacecraft propulsion.
The first campaign is intentionally limited. Rather than optimize thrust, we are establishing whether the electrical and vacuum measurements remain consistent across repeated operating cycles. Reliable instrumentation is a prerequisite for comparing changes in geometry, materials, or pulse timing.
Baseline measurements
Checkout runs have verified synchronized capture of discharge current, capacitor voltage, chamber pressure, and optical emission. A non-propulsive calibration fixture is being used to characterize electrical noise and timing offsets before measurements are taken with an active test article.
The principal challenge so far has been separating fast transient behavior from coupling introduced by the measurement system itself. Revised grounding, shielding, and probe placement reduced run-to-run variation, but the diagnostics are still being qualified.
What comes next
The next phase will establish a repeatable baseline over extended pulse sequences and compare independent methods for estimating impulse. Materials exposed during the campaign will be inspected for erosion and deposition patterns.
No performance conclusions are being drawn at this stage. The commissioning program is intended to determine the uncertainty of the test environment before it is used to evaluate propulsion concepts.