OrbitalForge / missions
Each mission is a set of physics-anchored targets your design has to hit. Completing all targets applies a reward multiplier to your score. Browse by theme — every category maps to a real piece of the multi-planetary roadmap.
Δv budgets and decade-class operating life.
Operate at altitude where drag is low enough that you could credibly stay aloft for 10 years on the modelled station-keeping budget. ≥ 1500 km altitude and Δv (24 h) ≤ 0.06 m/s.
Up high where the air is thin — 1200 km+ so your design can plausibly survive a decade without reboost.
Station-keeping efficiency challenge. Hold a working orbit (altitude ≥ 700 km, eclipse fraction ≤ 35 %) on a 24-hour Δv budget below 0.05 m/s — the cheapest perigee in the catalogue.