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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.142 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2017021530
pages 49-59

FLAME VISUALIZATION AND COMBUSTION PERFORMANCE OF ENERGETIC PARTICLE EMBEDDED PARAFFIN-BASED FUELS FOR HYBRID ROCKET PROPULSION

Yue Tang
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China
Suhang Chen
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China
Wei Zhang
School of Chemical Engineering, Nanjing University of Science and Technology 200 Xiaolingwei, Xuanwu District, Nanjing 210094, China
Ruiqi Shen
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China
Luigi T. DeLuca
Space Propulsion Laboratory (SPLab), Department of Aerospace Science and Technology, Politecnico di Milano, Milan, I-20156, Italy
Yinghua Ye
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China

RÉSUMÉ

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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