New improvements in the optimization of the launcher ascent trajectory through the HJB approach

Eric BOURGEOIS, Olivier BOKANOWSKI, Hasnaa ZIDANI, Anya DESILLES
2017
This study completes a previous one presented at EUCASS 2015. We investigate the resolution of the launcher ascent trajectory problem by the so-called Hamilton-Jacobi- Bellman (HJB) approach. The method gives a global optimum without any initialization procedure; nevertheless, the computational cost increases quickly for high dimension problems. To mitigate this, the payload mass was excluded from the parameters managed by the HJB equations. A new formulation is proposed to consider explicitly
more » ... his parameter, while limiting the computation time. An illustration is proposed on a heavy class launcher, for a GEO mission. This study has been performed in the frame of the CNES Launchers Research Technology program.
doi:10.13009/eucass2017-71 fatcat:vksctkbvxvdcbarvargxhimcfe