Hybrid rocket propulsion, first demonstrated by the Russian GIRD-09 rocket in 1933,
combines liquid oxidizer and solid fuel for thrust generation. Despite numerous advantages …

Hybrid rocket engine (HRE) performance is dependent on fuel/oxidizer selection and fuel
grain geometry. A literature review was performed to identify key trends and findings related …

In this work, we assess the impact of stepped hybrid rocket solid fuel grains on the
performance of the engine. The influence of Forward Facing Steps (FFS) and Backward …

In this study, we investigate the effect of single steps inside the fuel grains of typical hybrid
rocket motors numerically. Steps can be a promising candidate to increase the regression …

In this article, we investigate the interaction of multiple steps in hybrid rocket fuel grains.
Previous studies have shown the potential of single steps to increase the regression rate. In …

The present study explores the influence of protrusions on the combustion stability of a
hybrid rocket motor. The primary aim is to analyze single, double, and triple-protrusion …

View Video Presentation: https://doi. org/10.2514/6.2023-4028. vid We propose a new
engine concept which is an evolution of the stepped design approach previously developed …

This work numerically and experimentally investigated the effect of the characteristic
structure of nested composite fuel grains on their combustion properties. The characteristic …

Hypergolic ignition systems, where combustion is initiated nearly instantaneously upon
contact between the oxidizer and the fuel, can improve the reliability, safety, and simplicity of …

The novel stepped helix design consists of a series of solid fuel grain segments aligned in a
rotated manner to produce a stepped helical fuel port configuration. The design increases …