O'Neill Cylinder Engineering Project

COOPER STATION

Open-source physics engine and engineering specs for a 32 km rotating space habitat. Real math, real materials, no handwaving.

32 km
Length
8 km
Diameter
1.0 g
Gravity
12
Modules
Engineering Dashboard View on GitHub Explore Modules
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Station Parameters

Derived Parameters

Island III O'Neill Cylinder. Dual counter-rotating pair. All values computed from a = ω²r with r = 4,000 m.

0.473
RPM Rotation
500 km²
Habitable Area
1M
Population
0.5 atm
Atmosphere
198 m/s
Rim Velocity
126.9 s
Rotation Period
12 Core Modules

Independent Engineering Domains

Each module has its own SPEC.md with calculations, constraints, and open questions. Pick one, do the math, submit a PR.

MODULE 01
Structure
Hull design, materials science, stress analysis, mass budgets
IN PROGRESS
MODULE 02
Rotation & Gravity
Spin dynamics, gravity gradient, Coriolis effects, bearings
IN PROGRESS
MODULE 03
Atmosphere & ECLSS
Life support, air revitalization, water recovery, climate
OPEN
MODULE 04
Agriculture
Food production, hydroponics, biomes, crop optimization
OPEN
MODULE 05
Power Systems
Solar arrays, nuclear backup, energy storage, distribution
OPEN
MODULE 06
Radiation Shielding
Cosmic ray protection, solar storm defense, dosimetry
OPEN
MODULE 07
Habitat
Urban planning, residential zones, healthcare, psychology
OPEN
MODULE 08
Transportation
Maglev transit, radial elevators, zero-g corridor
OPEN
MODULE 09
Communications
Internal networks, deep space comms, positioning
OPEN
MODULE 10
Industrial
Manufacturing, recycling, zero-g factories, mining
OPEN
MODULE 11
Docking Ports
External interfaces, cargo logistics, escape vehicles
OPEN
MODULE 12
Command & Control
Station AI, telemetry, emergency protocols, governance
OPEN
Technology

Stack

Rust Engine

Core physics simulation — gravity, Coriolis, atmosphere, structural analysis. Compiles to WASM for browser.

WebAssembly

Run simulations in the browser at near-native speed. Interactive visualizations powered by real physics.

Three.js

3D visualization of the station, cross-sections, gravity zones, and real-time module status.

Contribute

How to Get Involved

1. Pick a Module

10 of 12 engineering modules are open. Each has a SPEC.md with current calculations and open questions that need answers.

2. Do the Math

We need aerospace, structural, mechanical, chemical, and agricultural engineers. Cite sources, show work, document gaps honestly.

3. Submit a PR

Fork the repo, add your calculations to the relevant module's SPEC.md or extend the Rust physics engine, and open a pull request.

Aerospace engineers — radiation shielding, power systems, docking
Structural engineers — hull materials, stress analysis, mass optimization
Life scientists — ECLSS, agriculture, biome design
Urban planners — habitat layout, transportation, population modeling
Software engineers — Rust engine, WASM, visualization, CI/CD
Open Source

12 modules, 30+ unit tests, 0 contributors.
The math is waiting.

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