国外预冷组合动力研究

Research Progress on Pre-cooling Combined Propulsion

“低成本、高速、机动、可靠”的天地往返可重复使用航天飞行器是未来航天技术发展的必然趋势,对具备宽速域、大空域、高比冲、大推重比的动力系统提出了强烈需求。组合循环动力系统通过混合使用多种动力模式,使它们各自在适用的工作区间发挥最佳性能。这种系统在全任务过程中展现出明显的综合能力,它可能是未来先进航天飞行器的理想动力来源。本文针对最具发展前景的组合动力,尤其是预冷组合动力,综述了其研究进展,分析了技术发展特点和取得的突破,并对预冷组合动力技术发展提出了建议。

“Low-cost,high-speed,maneuverable,and reliable”space transportation with reusable aerospace vehicles is an inevitable trend in the future development of aerospace technology,which has created a strong demand for power systems that can operate efficiently across a wide range of speeds,large airspace,high specific impulse,and high thrustto-weight ratio.Integrated propulsion system combines different modes of propulsion efficiently,fully leveraging the performance advantages of each type of power within its operating range to achieve outstanding comprehensive performance throughout the entire mission profile,making it an ideal power unit for advanced future aerospace vehicles.This paper focuses on the most promising combined propulsion systems,especially pre-cooled combined propulsion,summarizing their research progress,analyzing the characteristics of technological development and breakthroughs achieved,and proposing suggestions for the development of pre-cooling combined propulsion technology.