Use of N₂O–O₂ as the Oxidizer for the Hybrid Rocket Application

Present study deals with the study on the effect of Nytrox oxidizer which is the combination of both gaseous oxygen and gaseous nitrous oxide with the wax as a fuel on regression rate, combustion efficiency, and sliver loss. The oxygen was injected through the axial or showerhead injector, and for the nitrous oxide, two different injectors were used, i.e., radial and swirl injector. The study had been carried out with three different combinations of the N₂O and oxygen, i.e., 50:50, 70:30, 80:20 ratio. It was further compared with the GOX and N₂O. It has been observed that the pure N₂O gave lower regression rate compared to the oxygen unless swirl injector was used with N₂O. Among the injectors used, most effective in enhancing performance was swirl, then the radial and last was the showerhead injector. Among the combination of all the three oxidizers used, the 50:50 ratio was the most promising in all respect of performance improvement.