An Improved United Trajectory Optimization Approach in Boost-phase Considering Attitude Control Ability

This paper covers the hicles. Different from the traditional trajectory optimization design problem ＂once downward＂ movement principle of a class of demonstration flight test ve of negative attack angle, the ＂twice down ward＂ lower trajectory is proposed based on a SOP algorithm to meet the requirement for validating thermal protec- tion materials, Furthermore, an important advantage of this presented method, compared to the traditional method, is that both trajectory constraints and attitude control constraints are considered. An engineering example is also given to show the advantage and effectiveness of this method,