关键词: 含纳米颗粒碳氢燃料, 浆体燃料, 凝胶燃料, 火箭发动机, 燃烧性能

Abstract: Adding high-energy metallic or non-metallic solid particles to liquid hydrocarbon fuel is an important means to improve the energy characteristics of fuel. Based on the liquid rocket engine platform, the theoretical performance prediction and combustion test research of pure liquid fuel and fuel containing nano-aluminum/boron particles were carried out with residual oxygen coefficient of 0.60～0.80, and the influence of adding nano-aluminum particles and nano-boron par-ticles to hydrocarbon fuel was explored, the effects of slurry dispersion scheme and gel dispersion scheme were com-pared. The results show that the addition of 10% nano-aluminum/boron particles leads to a decrease in combustion efficiency of 1.2%/2.4% and the corresponding engine density specific impulse increased by 6.5%/3.2% respectively. The addition of nano-aluminum particles has more potential in engineering applications; Compared with QC pure liquid fuel, the combustion efficiency of QC+B slurry fuel with 20% nano-boron particles added decreases by 9.1% on aver-age, and the density specific impulse decreases by 0.9% on average, while the combustion efficiency of QC+B gel fuel with 20% nano-boron particles added decreases by 5.8% on average, and the density specific impulse increases by 3.9% on average. The gel scheme is more conducive to giving full play to the high energy density characteristics of nanoparticles than the slurry scheme.

Key words: hydrocarbon fuel containing nanoparticles, slurry fuel, gel fuel, rocket engine, combustion performance