ORBTX is a physics-based orbital transfer engine designed as computational infrastructure for orbital mechanics. It computes Hohmann and bi-elliptic maneuvers, ΔV budgets, transfer time, and visualizes trajectories in real-time 3D - with API-first architecture. Unlike traditional mission software, ORBTX focuses on fast, accessible, developer-ready orbital computation. Today: precise transfer modeling. Tomorrow: AI-driven mission intelligence.