Published 6 issues per year
ISSN Print: 2150-766X
ISSN Online: 2150-7678
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FLAME VISUALIZATION AND COMBUSTION PERFORMANCE OF ENERGETIC PARTICLE EMBEDDED PARAFFIN-BASED FUELS FOR HYBRID ROCKET PROPULSION
ABSTRACT
In order to obtain high regression rates, a new energetic particle embedded paraffin-based fuel (double-base propellant particles blended with paraffin binder) was designed. During combustion, the settled particles were disaggregated due to melting of the paraffin binder and were detached from the burning surface due to oxidant flow blowing; this self-disintegration process is beneficial in promoting the regression rate. The combustion test results show that the regression and mass burning rates of all the formulations were raised and increased with the mass percentage of double-base propellant particles. Moreover, more particles causes more splatter. The average regression rates of formulations blended with 5%, 10%, 15%, and 20% particles in mass were increased by 30%, 38%, 47%, and 59%, respectively, in relation to pure paraffin. The results of interrupted-burning experiments demonstrated that energetic particle embedded paraffin-based fuels can stop combustion by closing the oxygen injection valve and this is suitable to the on/off capability of hybrid rockets.
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Bendana Fabio A., Castillo Josue J., Hagström China G., Spearrin Raymond M., Thermochemical structure of a hybrid rocket reaction layer based on laser absorption tomography, AIAA Propulsion and Energy 2019 Forum, 2019. Crossref