Two testing campaigns of a 1N green monopropellant thruster were performed. Changes were made between the two test campaigns to improve quality and reliability of results. An update heater designed specifically for ambient testing decreased test duration by reaching decomposition temperatures quicker and enabled better access for visual and instrumentation diagnostics. Thermocouples placed directly on the thruster are susceptible to movement during testing from vibrations. An updated method of securing thermocouples is needed for future tests to ensure consistent, reliable results. Additional thermocouple measurements to cover the entire thruster system should be implemented for to aid in understanding the decomposition process effectiveness and thermal management of the system. A laser displacement system on a torsional thrust stand was replaced by a load cell thrust stand. Exhaust fumes from the thruster affected laser measurements, and the laser system was not directly compatible with the LABVIEW data collection system used for all other test measurements. The updated load cell system has direct compatibility with LABVIEW. However, stiffness and feedback in the propellant feed lines prevents sufficient rotation of the torsional thrust balance for high signal to noise measurements. A new propellant feed design to minimize the impact on thrust balance mobility is required for future testing.
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