高超声速飞行器发动机热防护与发电一体化系统

姜培学; 张富珍; 胥蕊娜; 祝银海

doi:10.13224/j.cnki.jasp.2021.01.001

高超声速飞行器发动机热防护与发电一体化系统

doi: 10.13224/j.cnki.jasp.2021.01.001

姜培学^1,2,
张富珍^1,2,
胥蕊娜^1,2,
祝银海^1,2

基金项目: 国家自然科学基金创新研究群体项目(51621062)；国家自然科学基金重点项目(51536004)

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出版历程
- 收稿日期: 2020-05-30
- 刊出日期: 2021-01-28

Integrated thermal protection and power generation system of hypersonic vehicle engine

1.
Beijing Key Laboratory for CO2 Utilization and Reduction Technology,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China
2.
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China

摘要

摘要: 在对高超声速飞行器的热防护和机载设备电能需求的综合考虑下,立足发动机能量管理优化,结合CO2的物性特点,提出了以超临界CO2为循环工质的高效热防护与高温发电一体化系统。此一体化方案可以在实现发动机热防护的同时,提供电能、并减少冷却用燃油流量。基于燃油为该一体化系统的唯一热沉,通过理论分析和计算,提出了两个一体化系统,通过对一体化系统的优化分析,给出了提高一体化系统性能的措施:尽量提高燃油在CO2冷却器中被加热的终态温度以及采用回热来提高CO2闭式布雷顿循环的性能,该系统的热效率可达到17%。相对于采用蓄电池和燃料电池为机载设备供电的方案,当飞行器飞行时间为30 min,该一体化系统的净增质量分别降低85%和68%,体积分别降低81%和59%。
- 高超声速飞行器 /
- 一体化系统 /
- 热防护 /
- 超临界CO2 /
- 闭式布雷顿循环
Abstract: Considering the thermal protection of hypersonic vehicle and the power demand of airborne equipment, based on the optimization of engine energy management, an integrated system of high temperature power generation and high efficiency thermal protection was proposed with supercritical CO2 as the circulating working fluid combined with CO2 physical characteristics. This integrated scheme can provide electricity and reduce the fuel carrying capacity on the premise of achieving thermal protection purpose. The measures to improve the performance of the integrated system were put forward by analyzing the integrated system based on the fuel as the sole heat sink: to maximize the temperature of the fuel heated in the CO2cooler and improve the performance of the CO2 closed Brayton cycle by using regeneration. The thermal efficiency of the system can reach 17%. When the flight time was 30 minutes, compared with battery and fuel cell, the net mass gain of the integrated system was reduced by 85% and 68%, and the volume was reduced by 81% and 59%.
- hypersonic vehicle /
- integrated system /
- thermal protection /
- ,supercritical CO2 /
- closed Brayton cycle

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