Design the mission from destination to propellant budget — and check every step against Aditya-L1.
Your agency wants a solar observatory with an unbroken view of the Sun and an hour’s warning of the solar wind. In this assignment you make the design decisions in the order a mission team makes them: characterise Sun–Earth L1, size a halo orbit against a ground-station requirement, decide whether its stable manifold can deliver the spacecraft for free or a direct transfer is needed, and close the Δv and propellant budget with margin. At every step your numbers can be compared with ISRO’s Aditya-L1, which flew this mission in 2023–24.