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arXiv · 2511.03594

Powered Descent Trajectory Optimization of Chandrayaan-3 using Radau Collocation and Controllable Sets

Suraj Kumar·Aditya Rallapalli·Ashok Kumar Kakula·Bharat Kumar GVP
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Abstract

India achieved a significant milestone on August $23^{\text{rd}}$ 2023, becoming the fourth country to accomplish a soft landing on the Moon. This paper presents the powered descent trajectory design for the Chandrayaan-3 mission. The optimization framework is based on pseudospectral Radau collocation, and controllability-based waypoint refinement is employed to further enhance the robustness of the trajectory against state and control perturbations. Furthermore, the trade-off between fuel consumption and robustness is explicitly quantified, providing insights into the practical considerations of mission planning.

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Suraj Kumar, Aditya Rallapalli, Ashok Kumar Kakula, Bharat Kumar GVP. 2025-11-05. Powered Descent Trajectory Optimization of Chandrayaan-3 using Radau Collocation and Controllable Sets. https://arxiv.org/abs/2511.03594

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