Module trajectory_integration 

Advanced trajectory integration methods (RK4, RK45)

This module provides production-grade numerical integration for ballistic trajectories:

• RK4: 4th-order Runge-Kutta (fixed step)
• RK45: Dormand-Prince adaptive method (same as scipy.integrate.solve_ivp)

MBA-155: Upstreamed from ballistics_rust for shared use

Structs

TrajectoryParams

Parameters for trajectory computation

Functions

integrate_trajectory

Main trajectory integration function

solve_trajectory_rust

Python-exposed function for complete trajectory integration