Active Control of Fuel Position in Opposed-Flow Strand Burner Experiments

Exploring the potential of boron carbide in enhancing energy output of solid fuels for SFRJ and hybrid rocket propulsion systems

“…It is worth noting that mechanisms such as radiation and heterogeneous reactions, although not directly contingent on mass flux, still have the potential to influence fuel regression, as demonstrated in prior research [41,42]. Nevertheless, it is important to observe that the trend in regression rate exponents observed in this study for the typical opposed flow burner configuration aligns closely with findings from existing literature [37,[39][40]. These mechanisms are believed to be the primary contributors to the observed distinctions between the data from the motor and the opposed burner.…”

“…In this study, the reported regression rate exponents for the opposed burner in this study are found to be lower than the theoretically expected value of 0.8 for convective heat transfer-controlled regression in HTPB hybrid rocket motor configurations, as reported in the literature [37,38]. These disparities in data are likely attributed to the scaling effects resulting from the utilization of 1-D fuel pellet samples in opposed burner [37,[39][40]. The scaling effects alter the fluid dynamics of the oxidizer on the fuel surface and the heat conduction to the opposed-flow burner.…”