openrocket-sim SKILL.md skillA
openrocket-sim from broomva/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add broomva/skills/openrocket-sim@git:20260628.9edbf07Pins git:20260628.9edbf07 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- broomva/skills
- Path
skills/aerospace/openrocket-sim/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260628.9edbf07, committed Jun 28, 2026
- Size
- 4,952 bytes
- Repository stars
- 4
- License
- MIT
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…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# 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 …
Read the whole file at its exact version.
How to install
mdr add broomva/skills/openrocket-sim@sha256:e560aa1a554948e1The line at the top of this page pins the label git:20260628.9edbf07, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_dmoh2vf6noonpo4t)
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Versions
The registry has recorded 1 version of this file, committed on Jun 28, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4952 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
broomva/skills · 4 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dmoh2vf6noonpo4t GET https://markdownregistry.com/api/v1/resolve?ref=broomva/skills/openrocket-sim GET https://markdownregistry.com/api/v1/blob/e560aa1a554948e12c905efb4fd554e3f28626cc7dbd40bc0b5019cd8614282d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.