openrocket-simlisted

# OpenRocket Headless Simulation ## Quick Start — rocket-sim CLI The `rocket-sim` CLI at `~/broomva/experiments/rocket-tools/` wraps OpenRocket's headless core. All output is structured JSON. ```bash # Prerequisites: Java 17 export JAVA_HOME=/opt/homebrew/opt/openjdk@17/libexec/openjdk.jdk/Contents/Home ROCKET="~/broomva/experiments/openrocket/core/src/main/resources/datafiles/examples/A simple model rocket.ork" # Inspect rocket design rocket-sim info "$ROCKET" # Run simulation → JSON with altitude, velocity, mach, events rocket-sim run "$ROCKET" # Parameter sweep (rod_angle, rod_length, launch_altitude, wind_speed, time_step) rocket-sim sweep "$ROCKET" wind_speed 0,2,5,8,10 # Flight event timeline rocket-sim events "$ROCKET" ``` **Validated results** (A simple model rocket, A8-3 motor): - Max altitude: 50.7m | Max velocity: 29.3 m/s | Mach: 0.086 | Flight time: 15.9s - Events: Launch→Ignition→Liftoff→Burnout→Apogee→Ejection→Parachute→Ground **Two stage high power rocket** (multi-branch): - Max altitude: 677.6m | Max velocity: 159.1 m/s | Mach: 0.469 | Flight time: 64.0s ## AI Optimizer At `~/broomva/experiments/rocket-ai/optimizer.py`. Iterative loop: Claude analyzes simulation results, proposes parameter sweeps, evaluates trade-offs, converges. ```bash export ANTHROPIC_API_KEY=sk-... cd ~/broomva/experiments/rocket-ai python3 optimizer.py "path/to/rocket.ork" \ --goal "Maximize altitude while keeping ground hit velocity under 10 m/s" \ --iterations 5 ``