Efficiency Analysis and Integrated Design of Rocket-Augmented Turbine-Based Combined Cycle Engines with Trajectory Optimization

Feng Guo, Wenguo Luo, Feng Gui, Jianfeng Zhu, Yancheng You and Fei Xing
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Feng Guo: School of Aerospace Engineering, Xiamen University, Xiamen 361005, China
Wenguo Luo: School of Aerospace Engineering, Xiamen University, Xiamen 361005, China
Feng Gui: AECC Sichuan Gas Turbine Establishment, Chengdu 610500, China
Jianfeng Zhu: School of Aerospace Engineering, Xiamen University, Xiamen 361005, China
Yancheng You: School of Aerospace Engineering, Xiamen University, Xiamen 361005, China
Fei Xing: School of Aerospace Engineering, Xiamen University, Xiamen 361005, China

Energies, 2020, vol. 13, issue 11, 1-17

Abstract: An integrated analysis method for a rocket-augmented turbine-based combined cycle (TBCC) engine is proposed based on the trajectory optimization method of the Gauss pseudospectral. The efficiency and energy of the vehicles with and without the rocket are analyzed. Introducing an appropriate rocket to assist the TBCC-powered vehicle will reduce the total energy consumption of drag, and increase the vehicle efficiency in the transonic and the mode transition. It results in an increase in the total efficiency despite a reduction in engine efficiency. Therefore, introducing a rocket as the auxiliary power is not only a practical solution to enable flight over a wide-speed range when the TBCC is incapable but also probably an economical scheme when the the TBCC meets the requirements of thrust. When the vehicle drag is low, the rocket works for a short time and its optimal relative thrust is small. Thus, the TBCC combined with a booster rocket will be a more simple and suitable scheme. When the vehicle drag is high, the operating time of the rocket is long and the optimal relative thrust is large. The specific impulse has a significant impact on the flight time and the total fuel consumption. Accordingly, the combination form for the rocket-based combined cycle (RBCC) engines and the turbine will be more appropriate to obtain higher economic performance.

Keywords: turbine-based combined cycle engine; TBCC; rocket-augmented; trajectory optimization; Gauss pseudospectral method; efficiency analysis; combined design; integrated design (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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