AS DISCUSSED extensively in the literature, hybrid rockets offer many advantages over conventional liquid and solid systems. One of the most important advantages is the hybrid’s inherent safety, which is a direct consequence of the storage of the fuel and oxidizer remotely from each other in different phases (one in liquid, the other in solid, making it virtually impossible for them to mix and react spontaneously). The two-phase propellant system also forces hybrids to operate in a heterogeneous, boundary layer, combustion configuration. Typically, the hybrid combustion process