Lunar Trajectory Comparison Visualizer

Compare four broad trajectory families. The paths are conceptual rather than propagated ephemerides; they are designed to explain why flight time, launch energy, arrival conditions and operational complexity trade against one another.

How to read the comparison

A faster transfer generally requires higher departure energy and can produce demanding arrival conditions. A free-return geometry can provide a passive path back toward Earth if a critical manoeuvre is not performed, but it constrains mission geometry. Low-energy multi-body trajectories can reduce or reshape some propulsion demands while extending flight time and operational exposure.

What the visualizer does not calculate

Actual lunar mission design requires launch date, parking orbit, Earth and Moon ephemerides, spacecraft state vectors, correction manoeuvres, lunar arrival geometry and mission-specific constraints. Use the Delta-V Mission Planner for a budget-style calculation rather than reading delta-v from this conceptual diagram.