Journal of Aeronautics & Aerospace Engineering
Open Access

Junlong Zhang

Publications

• Research Article
  Effects of Air Vitiation on Scramjet Performance Based on Thermodynamic Cycle Analysis
  Author(s): Juntao Chang*,Shibin Cao,Junlong Zhang,Jianfeng Z,Wen Bao,Wenqing S,Zhixin Li Juntao Chang*,Shibin Cao,Junlong Zhang,Jianfeng Z,Wen Bao,Wenqing S,Zhixin Li
  
  The influences of air vitiation on scramjet performance were studied in this paper based on thermodynamic cycle analysis. By the aid of NASA Glenn’s computer program Chemical Equilibrium with Applications (CEA), parameters of vitiated air at combustion heater exit could be calculated. Based on thermodynamic cycle analysis, scramjet performance, including internal thrust, specific thrust, and specific impulse, were analyzed with 9 simulation criterions under Mach 4.5 and 6.5 conditions, respectively. The results show that, (1) specific heat and specific heat ratio of vitiated air are mainly affected by combustion heating medium, and also have minor connection with temperature criterions. Moreover, choosing different simulation criterions influences the temperature or pressure between clean air and vitiated air significantly; (2) the internal thrust and specific thrust of scramjet.. View More»
  DOI: 10.4172/2168-9792.1000130

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