# DFH-4 satellite bus 3D model

> Shape built from published dimensions and the maker’s renders; details estimated.

Free 3D model of DFH-4 satellite bus, a satellite, built from published dimensions by Space Radar. 14,564 triangles, 106 kB glTF, MIT.

- **Class:** Satellites
- **Mission:** Communications
- **Triangles:** 14,564
- **File:** bus-dfh-4.glb, 106 kB, glTF 2.0 binary (meshopt)
- **Look:** Physically based
- **Size:** 30 m across
- **Made:** Built from dimensions
- **Added:** 2026-11-08
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/bus-dfh-4.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/bus-dfh-4.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=bus-dfh-4
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** DFH-4 satellite bus 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/bus-dfh-4/

## 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 (McDowell's GCAT, Wikipedia); layout read from the makers' photographs and renders, looked at only.

built by this project in code (tools/bus-builder, release 2.0.0 batch m4-buses) from published sizes, with the photographs and the maker's renders under `references` LOOKED AT ONLY; no image-to-3D model was used and no published mesh (NASA 3D Resources has none of this bus)

## Dimensions

- Body x: 2.4 m
- Body y: 2.5 m
- Body z: 3.6 m
- Span: 30 m
- Reflector: 2.6 m

Source: GCAT: Zhongxing-10 and Paksat-MM1 3.6 x 2.4 m (the box), the others 5.0 x 2.5 m (with the stowed antennas), Span 30 m for most (15.5 for two), launch mass 5 000 to 5 500 kg. Drawn: a box 2.4 x 2.5 x 3.6 m (5.0 m with the deck antennas), 30.0 m over the wings. OURS (ESTIMATED): the reflectors' 2.6 and 1.5 m, their arms and tilts, three panels of 2.6 x 3.95 m a wing, the yoke and its crossing struts.

## References

- [Belintersat-1.jpg](https://commons.wikimedia.org/wiki/File:Belintersat-1.jpg), as named on the Commons file page (CC BY-SA 4.0 (Commons LicenseShortName, read 2026-11-07))
- [Alcomsat-1 (Gunter's Space Page)](https://space.skyrocket.de/doc_sdat/alcomsat-1.htm), CAST / CGWIC, via Gunter's Space Page (Gunter D. Krebs) (copyright CAST / CGWIC (a maker's render; looked at only, no part of it is in a file))
- [APStar-6C (Gunter's Space Page)](https://space.skyrocket.de/doc_sdat/apstar-6c.htm), CAST / CGWIC, via Gunter's Space Page (Gunter D. Krebs) (copyright CAST / CGWIC (a maker's render; looked at only, no part of it is in a file))
- [APStar-6D (Gunter's Space Page)](https://space.skyrocket.de/doc_sdat/apstar-6d.htm), CAST / CGWIC, via Gunter's Space Page (Gunter D. Krebs) (copyright CAST / CGWIC (a maker's render; looked at only, no part of it is in a file))
- [APStar-9 (Gunter's Space Page)](https://space.skyrocket.de/doc_sdat/apstar-9.htm), CAST / CGWIC, via Gunter's Space Page (Gunter D. Krebs) (copyright CAST / CGWIC (a maker's render; looked at only, no part of it is in a file))
- [General Catalog of Artificial Space Objects (GCAT), satcat.tsv of 2026-11-07](https://planet4589.org/space/gcat/tsv/cat/satcat.tsv), Jonathan C. McDowell (CC BY 4.0 (the catalogue's own statement))