New VRP Variant
Planets are customers. Spacecraft are vehicles. Orbital mechanics replace road constraints, and Lambert transfers define a cost that depends on when you leave.
Open Research Platform
Interplanetary
Vehicle Routing
A novel formulation of the VRP where vehicles are spacecraft navigating gravitational constraints, transfer windows, and multi-planet supply chains across the solar system.
Preprint on Zenodo · v2, September 2026 ↗What is this?
The IVRP Project
Exact MILP Solver
A time-expanded Mixed-Integer Linear Program solved to proved optimality, respecting Δv budgets, arrival windows and stay bounds.
3D Solar System
Real Keplerian orbital data drives a Three.js simulation. Watch spacecraft travel transfer arcs between planets in mission time.
Porkchop Plots
C₃ energy maps over departure × arrival date space. Identifies optimal launch windows across all planetary pairs automatically.
Mission Metrics
Track total Δv, mission duration, fleet utilization and leg completion in real-time as the simulation clock runs forward.
Open Source
Algorithms, simulation, and formal proofs fully open. Upload any mission JSON and watch it visualize in 3D.
Architecture
Algorithms → Simulation
01
IVRP Instance
planets, windows, Δv
02
Exact Solver
time-expanded MILP
03
JSON Export
IVRPSolution schema
04
3D Simulation
Three.js visualizer
Get started
Watch the mission
unfold in 3D
The default mission solves an IVRP instance across Venus, Mars and Jupiter. Upload your own JSON to visualize any solution.