Yifan Wang, Dechen Liu, Pengcheng Xu, Pengcheng Du, Zhengping Zou
{"title":"Thermodynamic performance study of simplified precooled engine cycle with coupling power output","authors":"Yifan Wang, Dechen Liu, Pengcheng Xu, Pengcheng Du, Zhengping Zou","doi":"10.33737/jgpps/187745","DOIUrl":null,"url":null,"abstract":"Horizontal takeoff and landing, reusable hypersonic vehicles have become one of hot spots of aviation field due to their high performance over all operating conditions. The propulsion system with high performance power output capability inside flight envelope is the key to conduct various missions. In order to meet the power demand of the vehicle systems, a coupled power output moderate pre-cooled cycle engine thermodynamic cycle based on closed-cycle supercritical helium was established. The sensitivity of propulsion system parameters and the overall performance of the design point of the thermodynamic cycle were analyzed. The influence law of the power extraction parameters was comparatively analyzed between the bleeding of high-pressure pre-combustion gas and expansion power from supercritical helium closed-cycle. According to the above results, a moderate precooled engine based on supercritical helium closed-cycle with power extraction was constructed. The results show that the scheme can achieve the performance of 109.6 kN thrust and 1,645 s specific impulse with 2 MW power extraction at 25.8 km, Ma5.0, which could provide a new idea for precooled engine scheme with power output.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"9 12","pages":""},"PeriodicalIF":16.4000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.33737/jgpps/187745","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Horizontal takeoff and landing, reusable hypersonic vehicles have become one of hot spots of aviation field due to their high performance over all operating conditions. The propulsion system with high performance power output capability inside flight envelope is the key to conduct various missions. In order to meet the power demand of the vehicle systems, a coupled power output moderate pre-cooled cycle engine thermodynamic cycle based on closed-cycle supercritical helium was established. The sensitivity of propulsion system parameters and the overall performance of the design point of the thermodynamic cycle were analyzed. The influence law of the power extraction parameters was comparatively analyzed between the bleeding of high-pressure pre-combustion gas and expansion power from supercritical helium closed-cycle. According to the above results, a moderate precooled engine based on supercritical helium closed-cycle with power extraction was constructed. The results show that the scheme can achieve the performance of 109.6 kN thrust and 1,645 s specific impulse with 2 MW power extraction at 25.8 km, Ma5.0, which could provide a new idea for precooled engine scheme with power output.
期刊介绍:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.