# Kosmos-3M second stage 3D model

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

Free 3D model of Kosmos-3M second stage, a rocket stage, built from published dimensions by Space Radar. 9,524 triangles, 63 kB glTF, MIT.

- **Class:** Rockets and stages
- **Mission:** Launch vehicles
- **Triangles:** 9,524
- **File:** kosmos3m-stage2.glb, 63 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/kosmos3m-stage2.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/kosmos3m-stage2.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=kosmos3m-stage2
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** Kosmos-3M second stage 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/kosmos3m-stage2/

## 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 Dmitry Shipulja's CC0 photograph; the Commons photographs and infographic of the Kosmos-3M, looked at.

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: 2.4 m

Source: Encyclopedia Astronautica, 'Kosmos 11K65M' (http://www.astronautix.com/k/kosmos11k65m.html), OPENED 2026-10-26: second stage 'Diameter: 2.40 m', 'Length: 6.00 m', '1,435 kg empty', engine 11D49. OURS: the bell and steering nozzles (read off the infographic against the 2.4 m barrel), the instrument section's height (about a sixth of the stage, read off the Commons photographs of the whole vehicle)

## References

- [Cosmos3M.jpg (Trash777)](https://commons.wikimedia.org/wiki/File:Cosmos3M.jpg), Trash777 (CC BY-SA 4.0 (Commons LicenseShortName, read 2026-10-26); looked at, nothing taken from it)
- [Kosmos rocket.jpg (Dmitry Shipulja)](https://commons.wikimedia.org/wiki/File:Kosmos_rocket.jpg), Dmitry Shipulja (CC0 (Commons LicenseShortName, read 2026-10-26))
- [Kosmos-3m infografia.jpg (Julio Perez Suarez)](https://commons.wikimedia.org/wiki/File:Kosmos-3m_infografia.jpg), Julio Perez Suarez (CC BY-SA 3.0 (Commons LicenseShortName, read 2026-10-26); looked at, nothing taken from it)