Abstract
Hybrid rocket development relies on precise sensor data to evaluate key performance parameters such as thrust, temperature, and chamber pressure. The accuracy of this data is influenced not only by instrumentation noise but also by the design and efficiency of the test infrastructure. This study presents a comprehensive upgrade of a lab-scale hybrid rocket static fire test cart, focusing on improvements in oxidizer flow capacity, system wiring, and data acquisition reliability. Key upgrades include larger-diameter piping for increased oxidizer flow, minimized flow losses, simplified and insulated high-voltage wiring, and enhanced sensor integration to reduce signal noise. Comparative testing between the legacy and upgraded test carts assesses the impact of these design changes. The previous cart exhibited significant pressure data noise (standard deviation of 5.88 psi), while the upgraded system achieved improved signal clarity (standard deviation of 0.28 psi). Additional comparisons include oxidizer flow performance, pressure drop analysis, and overall system efficiency. Multiple test configurations and flow conditions are evaluated to quantify increases in performance and precision. Results demonstrate the effectiveness of these upgrades in improving calibration accuracy and test reliability and providing insights into optimizing hybrid rocket test infrastructure for more precise and repeatable experimental data.
Refined Hybrid Rocket Static Fire Testing with Increased Performance and Precision
Hybrid rocket development relies on precise sensor data to evaluate key performance parameters such as thrust, temperature, and chamber pressure. The accuracy of this data is influenced not only by instrumentation noise but also by the design and efficiency of the test infrastructure. This study presents a comprehensive upgrade of a lab-scale hybrid rocket static fire test cart, focusing on improvements in oxidizer flow capacity, system wiring, and data acquisition reliability. Key upgrades include larger-diameter piping for increased oxidizer flow, minimized flow losses, simplified and insulated high-voltage wiring, and enhanced sensor integration to reduce signal noise. Comparative testing between the legacy and upgraded test carts assesses the impact of these design changes. The previous cart exhibited significant pressure data noise (standard deviation of 5.88 psi), while the upgraded system achieved improved signal clarity (standard deviation of 0.28 psi). Additional comparisons include oxidizer flow performance, pressure drop analysis, and overall system efficiency. Multiple test configurations and flow conditions are evaluated to quantify increases in performance and precision. Results demonstrate the effectiveness of these upgrades in improving calibration accuracy and test reliability and providing insights into optimizing hybrid rocket test infrastructure for more precise and repeatable experimental data.