High energy density fuels are critical for hypersonic aerospace propulsion but suffer from difficul- ties of ignition delay and incomplete combustion. This research reports aluminum nanoparticles （A1 NPs） assisted i...High energy density fuels are critical for hypersonic aerospace propulsion but suffer from difficul- ties of ignition delay and incomplete combustion. This research reports aluminum nanoparticles （A1 NPs） assisted ignition and combustion of high energy density JP-10 fuel. A1NPs with a size of 16 nm were fabricated through a mild and simple method by decomposing AIH3. Et20 with the addition of a surfactant ligand. The uniform size distribu- tion, nanoscaled size and surface ligand make A1 NPs stably suspend in JP-10, with 80% NPs being dispersed in the liquid fuel after six months. A shock tube test shows that the presence of 1 wt-% A1 NPs can significantly shorten ignition delay time at temperature of 1500 to 1750 K, promote the combustion, and enhance energy release of JP-10. This work demonstrates the potential of A1 NPs as ignition and combustion additive for high energy density fuel in hypersonic applications.展开更多
文摘High energy density fuels are critical for hypersonic aerospace propulsion but suffer from difficul- ties of ignition delay and incomplete combustion. This research reports aluminum nanoparticles （A1 NPs） assisted ignition and combustion of high energy density JP-10 fuel. A1NPs with a size of 16 nm were fabricated through a mild and simple method by decomposing AIH3. Et20 with the addition of a surfactant ligand. The uniform size distribu- tion, nanoscaled size and surface ligand make A1 NPs stably suspend in JP-10, with 80% NPs being dispersed in the liquid fuel after six months. A shock tube test shows that the presence of 1 wt-% A1 NPs can significantly shorten ignition delay time at temperature of 1500 to 1750 K, promote the combustion, and enhance energy release of JP-10. This work demonstrates the potential of A1 NPs as ignition and combustion additive for high energy density fuel in hypersonic applications.
