CAJ | 학술논문

随着对RBCC发动机研究的不断深入，热防护问题已经成为其走向工程应用的关键之一，本文针对RBCC发动机开展了热防护方案的研究。首先，采用数值模拟对RBCC发动机各模态下的热环境进行了分析；然后，进行了RBCC热防护方案的论证，认为目前材料和技术水平下全主动和全被动方案很难满足RBCC热防护的要求；在此基础上，提出了一种主被动相结合的复合热防护方案，并完成了复合热防护方案的设计。该方案内壁整体采用C/SiC陶瓷基复合材料，在受热比较严重的部位加装再生冷却模块，较好地解决了RBCC发动机冷却剂流量不够的问题。通过对方案的校核计算表明，该方案可满足长时间工作RBCC的热防护需要。
수착대RBCC발동궤연구적불단심입，열방호문제이경성위기주향공정응용적관건지일，본문침대RBCC발동궤개전료열방호방안적연구。수선，채용수치모의대RBCC발동궤각모태하적열배경진행료분석；연후，진행료RBCC열방호방안적론증，인위목전재료화기술수평하전주동화전피동방안흔난만족RBCC열방호적요구；재차기출상，제출료일충주피동상결합적복합열방호방안，병완성료복합열방호방안적설계。해방안내벽정체채용C/SiC도자기복합재료，재수열비교엄중적부위가장재생냉각모괴，교호지해결료RBCC발동궤냉각제류량불구적문제。통과대방안적교핵계산표명，해방안가만족장시간공작RBCC적열방호수요。
The thermal protection is the key problem for RBCC engine engineering development with the intensive research.The thermal protection scheme was studied in this paper based on the thermal environments which are achieved by numerical simulations of different modes. The results show that active cooling and passive cooling method cannot satisfy the RBCC thermal protection re-quirements either.A new thermal protection with combination of active and passive cooling concept was designed.The C/SiC ceramic matrix composites are used for combustor inner wall.The regenerative cooling modules were installed at the sections heated seriously. The simulation results show that the combination thermal protection resolve the problem of the shortage of coolant and satisfy the thermal protection requirement of RBCC engine operating.