# Delta II second stage 3D model

> Shape built from published dimensions and pictures; details simplified.

Free 3D model of Delta II second stage, a rocket stage, built from published dimensions by Space Radar. 8,840 triangles, 64 kB glTF, MIT.

- **Class:** Rockets and stages
- **Mission:** Launch vehicles
- **Triangles:** 8,840
- **File:** delta2-stage.glb, 64 kB, glTF 2.0 binary (meshopt)
- **Look:** Physically based
- **Size:** 6.0 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-27
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/delta2-stage.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/delta2-stage.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=delta2-stage
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** Delta II second stage 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/delta2-stage/

## How it was made

Built in code from published dimensions and photographs, with no image-to-3D generator and no one else’s mesh. 3D model: built by Space Radar from published dimensions; compared with NASA's photographs of the Delta-K stage (public domain).

built by this project in code (tools/stage-builder/, release 1.4.0 stage r14-m1: stagelib.py and one function a stage in stages.py); no image-to-3D model was used and no published mesh: none of NASA 3D Resources' 1 583 paths is this stage and a web search found no agency or operator model of it (read 2026-10-26)

## Dimensions

- Length: 6 m
- Diameter: 2.44 m

Source: Wikipedia, 'Delta II' (https://en.wikipedia.org/wiki/Delta_II), read 2026-10-26, which cites the Boeing Delta II Payload Planner's Guide: second stage Delta K 'length 6 m', 'diameter 2.44 m', 950 kg empty, one AJ10-118K of 43.6 kN; stainless-steel tanks in a light aluminium structure, helium pressurisation, nitrogen thrusters. OURS: the bell's size (read off KSC-02PD-2059 against the 2.44 m barrel), the bottles' sizes and places, the guidance bay's fittings

## References

- [Delta-K second stage for Delta 294 mission (KSC-02PD-2059)](https://commons.wikimedia.org/wiki/File:Delta-K_second_stage_for_Delta_294_mission_(KSC-02PD-2059).jpg), NASA (Public domain (NASA; Commons LicenseShortName, read 2026-10-26))
- [Delta-K second stage for Delta 294 mission (KSC-02PD-2058)](https://commons.wikimedia.org/wiki/File:Delta-K_second_stage_for_Delta_294_mission_(KSC-02PD-2058).jpg), NASA (Public domain (NASA; Commons LicenseShortName, read 2026-10-26))
- [Delta II second stage (KSC-07PD-0126)](https://commons.wikimedia.org/wiki/File:Delta_II_second_stage.jpg), NASA/George Shelton (Public domain (NASA; Commons LicenseShortName, read 2026-10-26))
- [Delta II 7920 second stage (KSC-03PD-2886)](https://commons.wikimedia.org/wiki/File:Delta_II_7920_second_stage.jpg), NASA (Public domain (NASA; Commons LicenseShortName, read 2026-10-26))