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AIAA Guidance, Navigation, and Control Conference and Exhibit
The Space Shuttle's two-dimensional entry trajectory planning method is extended to three dimensions. Both angle-of-attack and angle-of-bank variations are used to control the entry trajectory. The trajectory planning is done with a third-order system of differential equations using the drag and lateral accelerations as intermediate controls. The reduced-order planning problem is solved first in a simple manner with a fixed angle-ofattack profile and second as an optimal control problem. Thedoi:10.2514/6.2000-3959 fatcat:iyl7zd5vlbgb5k2ezyrwamjfhm