openrocket-sim

name

openrocket-sim

description

Headless rocket design, simulation, and optimization using OpenRocket's Java core engine. Includes rocket-sim CLI tool for batch simulations and parameter sweeps, plus an AI-driven optimization loop using Claude. Use when: (1) designing model rockets programmatically, (2) running headless flight simulations, (3) optimizing rocket designs for altitude/stability/velocity, (4) batch-processing .ork files, (5) parameter sweeps over launch conditions, (6) AI-driven design optimization, (7) building a simulation pipeline or API wrapper, (8) exporting designs for 3D printing or laser cutting, (9) user mentions 'openrocket', 'rocket simulation', 'flight sim', 'rocket design', 'model rocket', 'rocketry', 'apogee optimization', 'thrust curve', 'rocket-sim'.

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.

# 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 ""