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IX-Shield

Documentation-first engineering proof of concept for a multifunctional crew-protection architecture focused on deep-space radiation risk reduction, geometry-aware mass placement, and concentrated storm-shelter logic.

Status

IX-Shield is a concept-stage repository.

It is:

  • a proof-of-concept architecture package;
  • a reviewable repository for bounded screening logic;
  • a documentation-first engineering build.

It is not:

  • flight qualified;
  • crew rated;
  • transport validated;
  • operationally approved;
  • a complete solution to deep-space radiation.

Why This Repo Exists

IX-Shield exists to package a technically serious crew-protection concept in a form that can be reviewed without hype.

The repository is built around a simple idea:

crew protection is not just a wall-thickness problem.
It is a combined problem involving:

  • shielding mass choice;
  • crew location;
  • surrounding mission mass;
  • local refuge design;
  • emergency shelter concentration;
  • disciplined non-claims.

Core Architecture Logic

IX-Shield is organized around three linked concepts:

1. Baseline Transit Shell

A low-Z / hydrogen-rich-biased conceptual shell intended for concept-stage passive-shielding screening.

2. Storm Shelter

A concentrated refuge enhancement intended to improve local protection during elevated event conditions through additional water-equivalent and hydrogen-rich mass near crew.

3. Geometry-Aware Protection

A zone-based view of the habitat that treats crew-core placement and surrounding mass distribution as part of the protection architecture.

What Is In This Repository

Documentation

The docs/ directory contains:

  • project charter;
  • architecture overview;
  • threat model;
  • requirements and acceptance criteria;
  • science basis;
  • geometry, contamination, risk, and operational boundary documents;
  • test matrix and procedure documents;
  • traceability and references.

Configurations

The configs/ directory contains:

  • baseline stack configuration;
  • storm-shelter add-on configurations;
  • reference vehicle zone configuration.

Analysis

The src/analysis/ directory contains:

  • baseline areal-density screening;
  • storm-shelter screening;
  • zone mass-budget screening.

Tests

The tests/ directory contains regression coverage for the analysis scripts.

Processed Results

The results/ directory stores processed outputs for manual review.

BOM

The BOM/ directory contains the concept-stage bill of materials.

Current Proof-of-Concept Output Snapshot

The current stored proof-of-concept outputs include:

  • Baseline stack total areal density: 20.7000 g/cm^2
  • Practical shelter add-on screening depth: 10.1160 cm water-equivalent proxy
  • Reference zone mass allocation total: 7450.00 kg across five zones

These are repository screening values only. They are not validated crew-protection performance values.

Recommended Review Order

For a clean first review, read the repo in this order:

  1. docs/00_Project_Charter.md
  2. docs/01_Architecture_Overview.md
  3. docs/02_Radiation_Threat_Model_and_Environments.md
  4. docs/03_Requirements_and_Acceptance_Criteria.md
  5. docs/16_Storm_Shelter_Concept.md
  6. docs/17_Analysis_Pipeline_Walkthrough.md
  7. results/

Repository Layout

IX-Shield/
├─ BOM/
├─ configs/
│  ├─ stacks/
│  └─ zones/
├─ docs/
├─ results/
├─ src/
│  └─ analysis/
├─ tests/
├─ LICENSE
├─ CITATION.cff
├─ CONTRIBUTING.md
├─ SECURITY.md
├─ DELTA_REPORT.md
└─ README.md

What This Repo Is Good For

IX-Shield is most useful for:

concept review;
architecture critique;
early trade-study framing;
proof-of-concept shielding logic discussion;
geometry-aware crew-protection discussion;
portfolio or research-positioning review.
What This Repo Is Not Good For

IX-Shield should not be used as:

a direct implementation package;
a flight design release;
a safety certification artifact;
a transport-validation substitute;
an operational decision package.
License

This repository is distributed under an evaluation-only license.

You may inspect, review, and perform bounded non-operational evaluation under the license terms.

You may not use the repository for unrestricted real-world implementation, deployment, commercialization, or operational integration without prior written permission from the repository owner.

See:

LICENSE
Citation

If you reference the repository in technical discussion or evaluation work, use:

CITATION.cff
Author

Bryce Lovell

Final Note

IX-Shield is meant to be taken seriously because it is bounded, reviewable, and honest about what it does not prove.
It is a disciplined architecture package, not a miracle-shield claim.