Hybrid Control Trajectory Optimization for Air-breathing Hypersonic Vehicle

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Trajectory optimization problem for air-breathing hypersonic vehicle is addressed in this paper. The engine of hypersonic vehicle is assumed as a dual-mode scramjet engine which can be operated as a ramjet and scramjet for wide range of flight Mach number. Boost-skipping trajectory was proposed for range maximization of hypersonic vehicle, and based on this trajectory, flight modes of dual-mode scramjet are divided into three modes, which are ram mode, scram mode, non-powered mode. Hypersonic vehicle was modelled with consideration of changes of physical quantities over mode transition. To deal with discrete mode changes as well as continuous control, hybrid optimal control method is applied to this problem. Simulation results demonstrate that the optimized trajectory with hybrid control has better performance compared to cyclic mode transition trajectory. Also, a vehicle which imitates the characteristics of dual-mode scramjet vehicle is implemented to optimize the trajectory. The results suggest that the hybrid optimal control can be applied to the trajectory optimization of a dual-mode scramjet vehicle considering the mode transition in infinite time horizon. Copyright (C) 2020 The Authors.
Publisher
ELSEVIER
Issue Date
2020-07
Language
English
Citation

21st IFAC World Congress on Automatic Control - Meeting Societal Challenges, pp.14768 - 14774

ISSN
2405-8963
DOI
10.1016/j.ifacol.2020.12.1900
URI
http://hdl.handle.net/10203/288826
Appears in Collection
AE-Conference Papers(학술회의논문)
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