基于液态金属朗肯循环的空间双模式核热推进系统性能分析

Performance of space dual-mode Nuclear thermal propulsion system based on Liquid metal Rankine cycle

中文关键词: 空间核能  双模式推进  液态金属朗肯循环  㶲损  㶲效率

英文关键词: space nuclear power  double model nuclear heat propulsion  Liquid metal Rankine cycle  exergy loss  exergy efficiency

中文摘要:

      随着深空探测技术的进步，空间核动力越来越成为载人航天任务的理想选择，将双模式空间核动力推进系统应用于航天推进系统已成为一种新的趋势。基于空间核能液态金属朗肯循环，提出一种新型的双模式核热推进系统，并对该推进系统发电模式下的液态金属朗肯循环进行了性能分析。利用能量分析和㶲分析的方法对双模式核热推进系统下的朗肯循环进行热力计算，得出各部件的能量损失和㶲损，找出损失最大的部件并分析原因，取不同的空间环境温度研究其对㶲损和㶲效率的影响，为系统的进一步优化提供理论依据。

英文摘要:

      With the advancement of deep space exploration technology, space nuclear power has become an ideal choice for manned space missions. The application of dual mode space nuclear power propulsion systems to space propulsion systems has become a new trend. A new dual-mode nuclear thermal propulsion system was proposed on the basis of liquid metal Rankine cycle, and the performance analysis of the propulsion system power generation mode was carried out. The exergy analysis and energy analysis were carried out to analyze the thermal performance of the Rankine cycle under the dual-mode nuclear thermal propulsion system, while the energy loss and exergy loss of each component were obtained. The components with largest loss were determined and the reasons were described. The effects of different space ambient temperature on the exergy loss and exergy efficiency are investigated.