# Mengtian 3D model

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

Free 3D model of Mengtian, a crewed craft or station, built from published dimensions by Space Radar. 8,230 triangles, 81 kB glTF, MIT.

- **Class:** Stations and crewed craft
- **Mission:** Human spaceflight
- **Triangles:** 8,230
- **File:** mengtian.glb, 81 kB, glTF 2.0 binary (meshopt)
- **Look:** Flat colours
- **Size:** 56 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-20
- **NORAD:** 54216
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/mengtian.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/mengtian.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=mengtian
- **On the live map:** https://www.spaceradar.ai/#at=sat-54216
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** Mengtian 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/mengtian/

## 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 and photographs by the China Manned Space Engineering Office (CC BY 4.0) and Shujianyang (CC0).

built by this project in code: the same laboratory as the row `tiangong` builds, cut out of that build with its two wings, centred on its own

## Dimensions

- Length: 17.9 m
- Diameter: 4.2 m
- Span: 55.6 m

Source: Wikipedia, opened 2026-10-20: 'Tiangong space station' infobox, length '~55.6 m'; 'Tianhe core module': 'The module is 16.6 m long, with a maximum diameter of 4.2 m'; 'Wentian experiment module' and 'Mengtian experiment module' infoboxes: length 17.9 m, diameter 4.2 m; both: 'With a wingspan of over 55 m (180 ft), each array has an energy collection area of 110 m2'; Wentian: 'a small 5 m long robotic arm'; 'On 30 September 2022, the module was relocated to the starboard port'; Mengtian 'relocated to the larboard port'. READ OFF THE PICTURES (approximate, ours): the node 2.8 m across, Tianhe's small section 2.8 m across and 3.6 m long, its large section 6.6 m and its aft section 2.8 m long; each laboratory's work cabin 8 m long and its outer section 3.2 m across and 5.9 m long; each laboratory wing two blankets 2.0 m wide and 24 m long either side of a lattice mast, its root 3.2 m from the laboratory's axis (so 55.6 m tip to tip, the cited figure); Tianhe's pair two blankets 2.0 by 12 m each side; every box, dish, arm and platform.

## References

- [Rear view of Tiangong Space Station](https://commons.wikimedia.org/wiki/File:Rear_view_of_Tiangong_Space_Station.jpg), China Manned Space Engineering Office (CC BY 4.0 (from Wang et al., Space: Science & Technology 2023, doi:10.34133/space.0035; Commons' LicenseShortName, read 2026-10-20))
- [Tiangong mockup at ZHAL 01 to 06](https://commons.wikimedia.org/wiki/File:Tiangong_mockup_at_ZHAL_01.jpg), Shujianyang (CC0 (Commons' LicenseShortName of all six, read 2026-10-20))
- [Tianhe solar array](https://commons.wikimedia.org/wiki/File:Tianhe_solar_array.jpg), China Manned Space Engineering Office (CC BY 4.0 (Commons' LicenseShortName, read 2026-10-20))
- [Tiangong expansion](https://commons.wikimedia.org/wiki/File:Tiangong_expansion.jpg), Wang Xiang, Zhang Qiao, Wang Wei (CC BY 4.0 (Commons' LicenseShortName, read 2026-10-20))
- [Tiangong Space Station config 2022 EN](https://commons.wikimedia.org/wiki/File:Tiangong_Space_Station_config_2022_EN.jpg), Shujianyang (CC BY-SA 4.0 (read on the file's page); NOT REPRODUCED)