Abstract
This document, produced with the assistance of ChatGPT o3 and ChatGPT 5 Thinking, is released under the Apache 2.0 licence. It is a voluntary defensive publication (prior art) and therefore enters the prior art upon release under the applicable patent statutes: EPC Art. 54(2) (European Patent Convention), French IPC Art. L 611-11 (CPI), 35 U.S.C. §102(a) (United States Patent Act), Chinese Patent Law Art. 22(5) (中华人民共和国专利法), and Japanese Patent Act Art. 29(1) (特許法). We disclose enabling designs, controls, materials, tests, and data/operations workflows for a 20 km semi-vacuum electromagnetic launcher, LiF-based cryogenic shoes/maglev carriages, and a retractable REBCO 3 T MHD shield for a reusable CH4/LOX booster. Each proposal includes reproducible implementation details, IPC/CPC classifications, and QA/SOP elements. Timestamp proofs (RFC 3161 / FreeTSA) provide verifiable public disclosure. (art. L 611-11 CPI / art. 54(2) CBE). Original publication on Zenodo : https://zenodo.org/records/16891085
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Pillet, Xavier, "Interplanetary Rail Launcher: Open-Source White Paper (Hardware & Software) – 20 km Electromagnetic Catapult, LiF Cryogenic Shoes and Retractable MHD Shield (TRL, Bottlenecks, Roadmap 2025–2040)", Technical Disclosure Commons, (August 19, 2025)
https://www.tdcommons.org/dpubs_series/8479