Reference Trajectory Design for Atmosphere Re-entry of Transportation Mechanical Structure

수송기계구조물의 대기권 재진입 기준궤도 설계

  • 박중현 (신라대학교 자동차기계공학과) ;
  • 엄위섭 (포항산업과학연구원)
  • Published : 2003.11.30

Abstract

The entry guidance design involves trajectory optimization and generation of a drag acceleration profile as the satisfaction of trajectory conditions during the entry flight. The reference trajectory is parameterized and optimized as piecewise linear functions of the velocity. A regularization technique is employed to achieve desired properties of the optimal drag profile. The regularized problem has smoothness properties and the minimization of performance index then prevents the drag acceleration from varying too fast, thus eliminating discontinuities. This paper shows the trajectory control using the simple control law as well as the information of reference drag acceleration.

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