Testing of the N2O/HDPE Vortex Flow Pancake Hybrid Rocket Engine with Augmented Spark Igniter

The paper is part of the research aimed at determining if vortex flow pancake (VFP) hybrid rocket engine feasible as green in-space chemical propulsion. objective this study to test an N2O/HDPE VFP ignited with N2O/C3H8 torch igniter. N2O used in self-pressurizing mode, which results two-phase and varying inlet conditions, thus better simulating real behavior. begins characterizing igniter, followed by hot-fire ignition tests VFP. allow for improved design igniter hybrid. axial regression rate ballistic coefficients are reported propellants configuration.