Trajectory optimization of ramjet missile using pseudo-spectral method = Pseudo-spectral 방법을 이용한 램제트 미사일의 궤적최적화

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This paper deals with ramjet-powered missile system. A ramjet-powered system has very complicated and incoherent thrust characteristics with respect to outer and inner environment during operation. For this reason, ramjet missile has many maneuver constraints and is allowed to be operated within more narrow flight envelope. In this paper, trajectory optimization of ramjet missile is accomplished. The trajectory optimization problem is formulated as a discrete parameter optimization problem. For this formulation, Legendre Pseudo-Spectral method is introduced. This method is based on calculating the state and control variables on Legendre-Gauss-Lobatto (LGL) points. To find the parameterized state and control variables, CFSQP (C code for Feasible Sequential Quadratic Programming) is used as an optimization tool (or algorithm). It is shown that, for this trajectory optimization, trend analysis is performed from thrust characteristics on various conditions and, finally, the trajectory optimization is accomplished with fine initial guess with these results.
Advisors
Tahk, Min-Jearesearcher탁민제researcher
Description
한국과학기술원 : 항공우주공학전공,
Publisher
한국과학기술원
Issue Date
2009
Identifier
308918/325007  / 020073196
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 항공우주공학전공, 2009.2, [ v, 69 p. ]

Keywords

Ramjet Missile; Trajectory Optimization; Pseudo-Spectral Method; 램제트 미사일; 궤적최적화; 수도스펙트랄방법; Ramjet Missile; Trajectory Optimization; Pseudo-Spectral Method; 램제트 미사일; 궤적최적화; 수도스펙트랄방법

URI
http://hdl.handle.net/10203/27042
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=308918&flag=dissertation
Appears in Collection
AE-Theses_Master(석사논문)
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