THRUST ATLAS — MODEL ATTRIBUTION AND LICENSES

These are independently authored artist reconstructions, not manufacturer CAD,
engineering drawings, or endorsed NASA/SpaceX products. Exact model variants
are listed in the app. Each date identifies a stated milestone: flight or reveal.

F-1 (bare engine with early turbine exhaust) and RL10A-3 (fixed nozzle)
Matthew (CobaltWolf) Mlodzienski and Bluedog Design Bureau contributors.
Source: https://github.com/CobaltWolf/Bluedog-Design-Bureau
License: Creative Commons Attribution-NonCommercial-ShareAlike 4.0
https://creativecommons.org/licenses/by-nc-sa/4.0/
Original source files and revision details:
/models/sources/f1-original.zip
/models/sources/rl10-original.zip

RS-25 / SSME (Space Shuttle Main Engine; precise production block unspecified)
EStreetRockets and Rocket Motor Menagerie contributors.
Source: https://github.com/EStreetRockets/RocketMotorMenagerie
License: Creative Commons Attribution-NonCommercial-ShareAlike 4.0
https://creativecommons.org/licenses/by-nc-sa/4.0/
Original source files and revision details:
/models/sources/rs25-original.zip

Raptor 3 (2024 sea-level exterior reconstruction) — current exhibit
"SpaceX Starship Raptor 3 engine" by VoitAa, published August 9, 2024.
Creator: https://sketchfab.com/VoitAa
Source: https://sketchfab.com/3d-models/spacex-starship-raptor-3-engine-2d3918a9edcb4eedbf2d180391113e3a
License: Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
Obtained from Owl Labs' public CC BY 4.0 redistribution:
https://oneulstock.com/space
https://oneulstock.com/space/model/raptor.glb
Owl Labs compressed/optimized the asset. Thrust Atlas decoded the GLB, baked
transforms, omitted two non-surface line segments, centered the nozzle axis,
normalized display height, adjusted its
dark material for exhibit lighting, and rendered a thumbnail. The served
geometry has 225,575 triangles; the original Sketchfab listing reports 262,157.
Retained distribution input and attribution: /models/sources/raptor3-input.zip
Conversion: tools/asset-pipeline/convert-raptor3.mjs
This is an artist reconstruction, not a SpaceX scan or engineering model.
Fuel preburner/turbopump callouts are inferred exterior locations. Exploded
mode separates artist mesh groups, not actual engine subassemblies.

Legacy Raptor (2018 development-era interpretation) — no longer displayed
The retained raptor.glb, raptor.png and raptor-original.zip have this attribution:
Alcentar, RealEngines 2.01 (2018).
Source: https://spacedock.info/mod/1212/RealEngines
Original release: https://spacedock.info/mod/1212/RealEngines/download/2.01
License: GNU General Public License, version 2 (GPLv2).
https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
Original editable mesh/texture files and license: /models/sources/raptor-original.zip

Modifications to the F-1, RL10, RS-25 and legacy Raptor assets by Thrust Atlas:
Converted .mu meshes to glTF, selected one engine variant, omitted game-only
fairings/glow objects, baked transforms, normalized display size, converted DDS
textures to PNG, and translated materials to glTF PBR. The invalid Raptor fairing-as-bump
texture assignment was omitted. Thumbnails render the converted GLB geometry. The converted artwork
retains the original respective CC BY-NC-SA 4.0 or GPLv2 license. Source files
and the conversion script are provided with this project.
Conversion utilities: /models/sources/conversion-tools.zip Imported CC assets
are noncommercial; this does not impose an asset license on unrelated app code.

Nell (March 1926 complete propulsion assembly)
Original Thrust Atlas geometry reconstructed from the NASA/USAF historical diagram:
https://www.nasa.gov/wp-content/uploads/2021/03/goddard_5_rocket_schematic_usaf_photo.jpg
https://www.nasa.gov/history/95-years-ago-goddards-first-liquid-fueled-rocket/
The motor is above the propellant tanks. Small fittings and surface finishes are
approximations; this is not a museum scan.

All plume colors, shock cells, sectioning, and exploded spacing are illustrative.
Section mode clips exterior meshes and does not claim to reveal modeled internal
engine plumbing. See the separate cycle diagram for conceptual internal flow.