Dual aero/propulsive landing guidance and control for reusable launch vehicle using convex programming

Abstract

In this thesis, dual aero/propulsive landing guidance and control for reusable launch vehicle using convex programming are suggested. The launch vehicle is modeled in 6-DoF to consider the various attitude constraints including vertical landing. The forces and moments generated by the TVC and the aerodynamic fins are modeled in order to utilize dual aero/propulsive controls. Also, the multi-phase guidance problem that can consider multiple flight phases simultaneously is configured using state-triggered constraints. Then, the optimization problems are formulated to perform case studies. The process of converting the original problems into convex sub-problems in the form of second-order cone programming is described using the successive convexification technique. Furthermore, the optimization problems are solved using a commercial solver MOSEK, and the performance of the proposed guidance and control method is analyzed by numerical simulations.