低温推进剂交叉输送管路关键技术研究进展

Research Progress on the Key Technologies of Cryogenic Propellant Cross Feed Pipeline

低温推进剂交叉输送(CPCF)技术是实现低温火箭动力冗余能力的关键技术之一,能够实现芯级和助推级推进剂的合理利用。该技术的核心部件是芯级和助推级之间的交叉输送管路,主要包括用于切断推进剂流动的隔离阀和管路连接分离装置。为了梳理CPCF核心部件的关键技术,首先对CPCF技术的基本运行原理和发展现状进行了简要阐述;其次对交叉输送管路存在的难点问题进行了归纳总结,主要涉及管路的低温密封、低温推进剂管理以及管路连接分离;最后借鉴相近领域的技术为CPCF技术的研制提供参考。本文对将来CPCF技术的应用具有一定的指导意义。

The cryogenic propellant cross feed(CPCF)technology is one of the key technologies to realize the redundant propulsion capacity of cryogenic rocket,and can realize the rational utilization of the propellant between the core and the booster stage.The vital part of the technology is the cross feed pipeline between the core and the booster stage,which mainly includes the isolation valve used to cut off the propellant and the connection-separation device used to connect and separate the pipeline.In order to sort out the pivotal technologies of the cross feed pipeline,the basic operation principle and the state of the art of the CPCF technology are briefly described.Then,the difficult problems existing in the cross feed pipeline are summarized,which mainly involve low-temperature sealing of pipelines,cryogenic propellant management,and pipeline connection-separation.Finally,some technologies of the related field are introduced for references.This paper has a certain guiding significance for the application of CPCF technology in the future.