化学-电喷双模推进系统的研究现状及展望

传统的化学推进和电推进拥有不同的特点及适用范围。化学推进可以产生毫牛级至牛级推力，相比于电推进，推力大，推力范围宽；电推进比冲高达上千秒，最小可以产生微牛级推力。但两种模式单独执行任务有一定的局限性，难以完成较为复杂的航天任务。化学推进与电推进相结合的双模推进系统，同时拥有高比冲和较宽的推力范围，为航天器提供了更高的任务灵活性，其中单组元液体火箭发动机 离子液体电喷推力器双模推进系统近年来受到广泛关注。简述了单组元 电喷双模推进系统的工作原理和特点，重点总结了国内外关于双模推进的研究现状，并对目前面临的问题与挑战进行分析。

Research status and prospect of chemical-electrospray dual-mode propulsion system

The traditional chemical propulsion and electric propulsion have different characteristics and application ranges. The chemical propulsion has a thrust range from ~mN to ~N. In comparison with the electric propulsion, it has the characteristics of high thrust and wide thrust range. The electric propulsion can obtain a maximum specific impulse of thousands of seconds and a minimum thrust of ~μN. However, there are limitations for those two modes, and some complex space missions are difficult to be completed independently by any of them. The dual-mode propulsion system includes both chemical mode and electric mode, and has the characteristics of high specific impulse and wide thrust range, which can improve the flexibility of the spacecraft mission. Monopropellant chemical propulsion paired with ionic liquid electrospray propulsion has received the most attention recently. The principle and characteristics of the monopropellant-electrospray dual-mode propulsion system are introduced. The research status of dual-mode propulsion is summarized, and the existing problems and challenges are analyzed.