| Citation: | LIU Wenjie, CHEN Chunxiang, LU Wei, et al. Influence of alternative fuels on the main combustion performance of RP-3 aviation kerosene and its blended fuels[J]. Journal of Aerospace Power, 2026, 41（6）：20250320 doi: 10.13224/j.cnki.jasp.20250320
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In order to reduce the emission of pollutants, meet the increasingly strict environmental requirements, and reduce the dependence on RP-3 aviation kerosene, the development of aviation alternative fuels is emerging as an urgent necessity for the global aviation industry. To investigate the combustion mechanisms of RP-3 aviation kerosene blended with hydrogenated catalytic biodiesel at varying blending ratios, numerical simulations of the combustion process of a certain type of aero-engine burning three kinds of fuels (RP-3 aviation kerosene, 70% RP-3 aviation kerosene/30% hydrogenated catalytic biodiesel, and 50% RP-3 aviation kerosene/50% hydrogenated catalytic biodiesel) were carried out to compare and analyze the combustion and emission characteristics of the combustion chambers when different fuels were burned. The results showed that, compared with RP-3 aviation kerosene, the flow field distribution characteristics in the combustion chamber were basically the same when the two blended fuels were burned, the high temperature region of the main combustion zone was obviously extended, the maximum temperature in the combustion chamber decreased by 9 K and 13 K, respectively, the average temperature of the combustion chamber outlet cross-section rose by 1 K and 4 K, and the exit temperature distribution coefficients of the three fuels were compliant with the regulations; the pollutant emission distribution characteristics in the combustion chamber were basically the same, in which the CO emissions were reduced by 5% and 6.4%, CO2 emissions reduced by 2.9% and 7.8%, NO emissions reduced by 4.2% and 5.8%, and carbon smoke emissions reduced by 3.2% and 4.7%.
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