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Onboard Path Planning for Reusable Launch Vehicles Application to the Shuttle Orbiter Reentry Mission

Vincent Morio(1*), Franck Cazaurang(2), Ali Zolghadri(3), Philippe Vernis(4)

(1) IMS lab/University of Bordeaux, France
(2) IMS lab/University of Bordeaux, France
(3) IMS lab/University of Bordeaux, France
(4) Astrium Space Transportation, France
(*) Corresponding author


DOI: https://doi.org/10.15866/irea.v7i3.17760

Abstract


This paper proposes a method for designing a model-based onboard path planning unit for reusable launch vehicles. Flatness approach is used to map the system dynamics into a lower dimension space. As a consequence, the number of optimization variables involved in the optimal control problem is reduced. In addition, nonconvex nonlinear trajectory constraints in the flat output space are inner approximated by means of superquadric shapes. Genetic algorithms are used to find a global solution both for the superquadric shapes and the associated geometric transformations tuning parameters. Finally, simulations results are presented to illustrate the proposed approach. Simulations are based on the terminal area energy management phase of the Shuttle orbiter STS-1 reentry mission.
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Keywords


Trajectory Planning; Flatness; Convexification; Genetic Algorithm; Superquadrics

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References


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