A speculative systems-engineering specification for the DS-1 Death Star, structured as a Preliminary Design Review (PDR) document package. Hybrid canon + real-physics analysis; audience framing is "Senior Technical Director review."
Status: v0.2 released; CDR transition active. PDR (Phases 0–5) complete and tagged at v0.2 (74-page PDF). PDR → CDR transition launched 2026-04-26: real-CDR fidelity over Phases 6–19 with periodic incremental releases v0.3 → v1.0. Phase 6 (CDR Foundation) complete; Phase 7 partial. Latest tag: v0.3-rc. Plan: /Users/parobek/.claude/plans/what-s-next-in-the-vast-stonebraker.md.
Can you design a 120-km planet-killing battle station on paper using mostly real physics, and honestly track where you cheat?
Short answer: yes, if you accept one irreducible physics concession — a bulk substrate with specific energy density at or above c² ("hypermatter"). With that one concession, every downstream subsystem — reactor, superlaser, shield, drive, turbolasers — follows as a large-but-finite extrapolation of known engineering (10–15 orders of magnitude beyond current capability, but internally consistent). Remove hypermatter and the concept collapses across six independent physics walls. The full accounting is in the ten-entry handwavium ledger (docs/10-handwavium-ledger.md), which every subsystem claim in the spec traces back to.
DS-1_Plans/
├── ref-docs/ # Source authority — the monolithic markdown spec
├── docs/ # Derived PDR document tree: executive summary, 11 subsystems,
│ # DS-2 delta, 7 engineering-artifact appendices (MPT budget,
│ # nomenclature, references, figures index, FMEA, V&V plan,
│ # DS-2 rebudget, figure-generation prompts)
├── to-dos/ # Phase plan + sprint backlog + live PROJECT-STATUS
├── code-artifacts/# Reference implementations of the interactive console (read-only)
├── proj-code/ # Final Vite + React + TypeScript interactive console
│ # (companion artifact to the PDF)
├── typeset/ # Typst build pipeline for the published PDF
├── CHANGELOG.md # Project-level history (component changelogs live in their subdirs)
├── CLAUDE.md # Conventions for AI assistants working in this repo
├── NOTICE.md # Rights + third-party acknowledgements
└── README.md # This file
A 30–60-page typeset PDF produced by the Typst pipeline in typeset/, backed by the interactive console in proj-code/. The PDF is for distribution and citation; the console is for exploration and peer review.
Open docs/README.md for the document-set navigation. Reading order is listed there.
Requires pandoc ≥ 3.0, Typst ≥ 0.11, and the JetBrains Mono + Chakra Petch fonts.
./typeset/build.sh
# output: dist/DS-1-PDR-v0.2.pdf
Zero-install path — open proj-code/DS1-Engineering-Console.html in a browser (uses CDN React + Recharts). Dev path:
cd proj-code
npm install
npm run dev
docs/appendix-D2-figure-prompts.md partitions the 30 figures across four production tools: Google Gemini Nano Banana 2 for the 13 illustrative plates (cutaways, schematics, sphere maps), Mermaid for 8 flowcharts and one sequence diagram, Graphviz for 2 fault trees, and matplotlib for 7 plots. Output lands in docs/figures/; reproducible source artifacts (.mmd / .dot / .py / prompt text) live alongside in docs/figures/_sources/.
The 17 programmatic figures are rendered and committed (DRAFT status). To regenerate from sources:
# matplotlib (creates a local venv; one-time)
cd docs/figures/_sources
python3 -m venv .venv && .venv/bin/pip install matplotlib numpy
.venv/bin/python F-figures.py
# Mermaid (requires npm i -g @mermaid-js/mermaid-cli)
./render-mermaid.sh
# Graphviz (requires brew install graphviz)
dot -Tsvg F-9.1.dot -o ../F-9.1.svg && dot -Tsvg F-9.2.dot -o ../F-9.2.svg
- Phase 0 · Foundation · done 2026-04-21
- Phase 1 · Document split · done 2026-04-21 (ref-doc → 13 sections + appendices)
- Phase 2 · Engineering artifacts · done 2026-04-22 (MPT budget, FMEA, V&V, nomenclature, references, figure index, DS-2 rebudget, HW→DR gap closure)
- Phase 3 · Figures · substantively complete (2026-04-26) — all 30 figures embedded in subsystem markdown with captions; first end-to-end Typst PDF builds at
dist/DS-1-PDR-v0.2.pdf. 17 programmatic figures (8 Mermaid + 2 Graphviz + 7 matplotlib) flipped to FINAL after palette + content verification. 13 Nano Banana 2 illustrative figures remain DRAFT pending iteration on minor label artifacts. - Phase 4 · Peer review · complete (2026-04-26) — three parallel-agent audits over S4.0..S4.5: 0 numerical discrepancies; 0 broken forward citations; 1 dead reverse-citation remediated (Bobrick & Martire arXiv:2102.06824); 3 broken
§3.6 → §4.6cross-references remediated; HW↔DR bidirectional traceability clean; FMEA action coverage clean; senior-engineer verdict PDR-ready - Phase 5 · Publication · complete (2026-04-26) — front matter authored (Approval, Revision History, Distribution / Classification, Contents, List of Figures × 30, List of Tables, Acronym short-list); JetBrains Mono + Chakra Petch installed; template compressed 119 → 74 pages; proof-read PASS; SHA-256 captured; git tag
v0.2applied. Release artifact:dist/DS-1-PDR-v0.2.pdf.
PDR is the architectural-level pass; CDR brings every subsystem to component-level fidelity, full ICDs, narrated FEA-class analyses, full FMEA (200+ rows), reliability/availability/maintainability tree, software/firmware architecture, manufacturing/CONOPS, cost/schedule, regulatory/compliance, and full DS-2 delta CDR. Target PDF 300–500+ pages. Wall-clock estimate: 60–80 user-active sessions. Plan: /Users/parobek/.claude/plans/what-s-next-in-the-vast-stonebraker.md. Conventions: to-dos/cdr-conventions.md; configuration management: docs/appendix-G-configuration-management.md; drafting standards: docs/appendix-H-drafting-standards.md.
- Phase 6 · CDR Foundation · complete (2026-04-26, v0.3-rc) — conventions doc, configuration management appendix, ICD template, Typst CDR helpers (
cdr-callout/two-col/icd-header/requirement-row). - Phase 7 · Drafting & Schematic Standards (+ S3.5 closeout) · partial — drafting standards appendix authored (title-block, GD&T crib, IEC 60617, ISO 14617, thermal block); S7.3 Rev A Nano Banana 2 prompts authored for F-2.1 / F-7.4 / F-A.1; user runs Rev A prompts → flip 13 §D.3 status rows → v0.3 final tag.
- Phases 8–19 · planned with sprint-level deliverables in
to-dos/phase-plan.mdandto-dos/sprint-backlog.md.
Live status: to-dos/PROJECT-STATUS.md. Phase detail: to-dos/phase-*.md.
All subsystem documents are consistent with these (docs/01-design-basis.md):
| DS-1 | DS-2 | |
|---|---|---|
| Diameter | 120 km | 160 km |
| Design-basis mass | 1.0 × 10¹⁸ kg | 2.37 × 10¹⁸ kg |
| Per-shot energy | 2.24 × 10³² J (Earth binding energy) | same |
| Sustained reactor | 2.6 × 10²⁷ W | 3-core sum 7.8 × 10²⁷ W |
| Recharge | ~24 h | ~3–5 min (canon) |
| Crew | 1.7 × 10⁶ | 637,835 |
| Hypermatter specific energy | 9 × 10¹⁶ J/kg (= c²) | same |
The spec uses a deliberate honest-accounting pattern. Every claim that exceeds real-physics envelope cites an HW-ID (HW-1 … HW-10) from the handwavium ledger. Every stakeholder requirement (SR-01 … SR-08) traces to one or more derived requirements (DR-01 … DR-16) with a verification class:
- A — Analysis (numerical demonstration within stated assumptions)
- I — Inspection (canon reconciliation)
- T — Test-eligible via a real-world analog program
- C — Concession (satisfied only by the cited HW-ID)
8 of 16 DRs are Concession-class. That ratio is the honest measure of how much we're cheating.
Licensed under CC-BY-NC-4.0 — attribution required, non-commercial use. See NOTICE.md for plain-English terms, third-party acknowledgements (Star Wars IP, real-physics program names, software dependencies), and the contact channel for commercial / rights inquiries.
This project is being developed toward formal technical-fiction publication. Issues and peer-review feedback are welcome via GitHub; please open an issue rather than a PR at this stage so contributions can be tracked against the phase plan.
Primary sources are consolidated in docs/appendix-C-references.md:
- Canon + Legends (Wookieepedia, WEG Death Star Technical Companion 1991, DK Incredible Cross-Sections, Rogue One UVG)
- Physicist analyses (Saxton, Wong, Siegel, Allain, Cox, Minton)
- Economic (Centives / Lehigh; Feinstein arXiv:1511.09054)
- Real-physics programs (NIF, TAE, Epirus, HELIOS, Psyche, ALPHA, NEXT-C, VASIMR, Lentz, MARAUDER)
All cited programs' status is current as of April 2026 — tracked in proj-code/src/data/realWorld2026.ts and the Ledger tab.