Experimental Research on Reconstruction Techniques for Instantaneous Regression Rate of Hybrid Rocket Motor with Single-Port Wagon Wheel Fuel Grain

This study investigated reconstruction techniques for building the instantaneous fuel regression rate of hybrid rocket motor (HRM). Specifically, an experiment in a laboratory 500 N-class with single-port wagon wheel grain, operated hydrogen peroxide (HP) and hydroxyl-terminated polybutadiene (HTPB) based (including Al), was carried out. A piece post-processing software developed to reconstruct other performance parameters HRM during firing test. The results produced by are good agreement experimental data obtained traditional methods, maximum error less than 5.75%. Moreover, compared endpoint method, method had significant advantage, which could ascertain sensitivity changes oxidizer mass flux fit formula single Additionally, digital image processing were employed determine axial distribution after test using computed tomography (CT) scanning. served verify accuracy calculation. average between CT scanning calculation 1.91%, proving that pixel statistic calculating practical characterizing In summary, main objective this transient grain techniques, through single-firing Furthermore, paper proposes modified is essential investigating HRMs.