Effect of Change in Alignment of the Multiport Grain on the Performance of a Hybrid Rocket Motor

A chemical rocket propulsion system that employs fuel and oxidizer in different physical states is known as hybrid rocket motor (HRM). HRM has some issues like low regression rate and less efficient combustion. Apart from these issues, the system has some special superiority like safest and cheaper system in comparison with other chemical propulsion system which makes it preferable for space tourism. So, diminishing this system’s concern can give extra boost in the research field of this propulsion setup. The offset grains can be a revolutionary step in the HRM. They can create recirculation zones due to change in alignment, and using multiport grain with it can also enhance the regression rate due to extra surface area exposure. The result showed that the regression rate obtained with offset grains having multiport was 2–3 times higher than the normal port grains. The combustion efficiency was also 20–30% higher than the normal port grain.