# Vostok 3KA 3D model

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

Free 3D model of Vostok 3KA, a crewed craft or station, built from published dimensions by Space Radar. 31,712 triangles, 261 kB glTF, MIT.

- **Class:** Stations and crewed craft
- **Mission:** Human spaceflight
- **Triangles:** 31,712
- **File:** vostok-3ka.glb, 261 kB, glTF 2.0 binary (meshopt)
- **Look:** Physically based
- **Size:** 4.4 m across
- **Made:** Built from dimensions
- **Added:** 2026-10-29
- **Download:** https://raw.githubusercontent.com/Sara-Managed-Projects/space-radar/main/site/models/vostok-3ka.glb
- **Mirror:** https://git.sara-agent.org/sara-projects/space-radar/raw/branch/main/site/models/vostok-3ka.glb
- **Viewer:** https://www.spaceradar.ai/model/?id=vostok-3ka
- **Licence:** MIT (https://github.com/Sara-Managed-Projects/space-radar/blob/main/LICENSE)
- **Credit:** Vostok 3KA 3D model by Space Radar (spaceradar.ai), MIT License

Canonical: https://models.spaceradar.ai/vostok-3ka/

## 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 photographs of the flown capsules and the full-size copies at the RKK Energia museum, Le Bourget, Speyer and the Science Museum (CC0, CC BY, CC BY-SA).

built by this project in code (tools/vostok-builder/, release 1.5.0 stage r15-c2: vostok3ka.py); no agency or museum 3D model of this craft exists under a free licence (read 2026-10-29): NASA 3D Resources' file listing (1 583 paths, the GitHub tree of nasa/NASA-3D-Resources) has nothing of Vostok or the R-7 (its one Soyuz is the Apollo-Soyuz one); the Smithsonian's National Air and Space Museum records show physical models only (its 3D site was down); Wikimedia Commons has no 3D file of any of them; the downloadable meshes a web search found (CGTrader, MyMiniFactory, RenderHub, Unity) are sold or personal-use only. So it is built, as the quality bar says: from opened dimensions and many pictures of the flown hardware and the museum copies. No image-to-3D model was used and no published mesh.

## Dimensions

- Sphere diameter: 2.3 m
- Instrument module length: 2.25 m
- Instrument module diameter: 2.43 m
- Length: 4.4 m

Source: Wikipedia, 'Vostok (spacecraft)' (https://en.wikipedia.org/wiki/Vostok_(spacecraft)), read 2026-10-28: the descent module 'spherical, 2.3 m', 2 460 kg; the instrument module 'length 2.25 m', 'diameter 2.43 m', '12 pressure bottles holding 20 kg of cold nitrogen gas at 2 200 PSI', '16 x 5 N' attitude thrusters, the main retro engine 'S5.4 (TDU), 397 kg, thrust 15.83 kN', burn 'one minute'; the ejection at 'about 7 000 m'. ru.wikipedia, 'Восток (космический корабль)', read 2026-10-28: 'длина 4,4 м без антенн', 'диаметром 2,3 м', two windows ('one on the entry hatch just above the cosmonaut's head, the other in the floor near his feet', with its own orientation device), the instrument section 'conical, maximum diameter 2,43 m'. Astronautix, 'Vostok' (http://www.astronautix.com/v/vostok.html), read 2026-10-28: 'two windows: one above the cosmonaut's head in the entry hatch, and one at his feet'. NOT PUBLISHED on any page opened, so READ OFF THE PHOTOGRAPHS and ILLUSTRATIVE: the opening's diameter (0.88 m, with a 0.60 m flange), the hatch's porthole (0.25 m), the coat's thickness at the rim, the positions of the opening (32 degrees above the equator) and of the Vzor window (opposite, 28 degrees below), the cone's and the drum's heights (1.2 m and 0.55 m, which with the engine's mouth make the cited 2.25 m), the nitrogen spheres' size (0.35 m) and ring (2.04 m across), the jets, the sensor discs, the antennas' lengths (hairpins 0.78 m, whips 1.6 m), every strap and cable. The wrapped, grey-silver skin is read off the full-size copies (the flown capsules are charred: the coat's colour before the entry is NOT documented in any picture of flight hardware opened).

## References

- [Vostok-1 Spacecraft 02.jpg](https://commons.wikimedia.org/wiki/File:Vostok-1_Spacecraft_02.jpg), Stolbovsky (CC BY 4.0 (Commons, read 2026-10-28))
- [Vostok-1 Spacecraft 01.jpg](https://commons.wikimedia.org/wiki/File:Vostok-1_Spacecraft_01.jpg), Stolbovsky (CC BY 4.0 (Commons, read 2026-10-28))
- [Vostok-1-musee-du-Bourget-P.jpg](https://commons.wikimedia.org/wiki/File:Vostok-1-musee-du-Bourget-P.jpg), Pline (CC BY-SA 3.0 (Commons, read 2026-10-28))
- [Full-Size Mock-up of Vostok 1 capsule at Musee de l'air et de l'espace, Le Bourget, France (53431558341).jpg](https://commons.wikimedia.org/wiki/File:Full-Size_Mock-up_of_Vostok_1_capsule_at_Mus%C3%A9e_de_l%27air_et_de_l%27espace,_Le_Bourget,_France_(53431558341).jpg), Alan Wilson (CC BY-SA 2.0 (Commons, read 2026-10-28))
- [Vostok (Memorial Museum of Astronautics).JPG](https://commons.wikimedia.org/wiki/File:Vostok_(Memorial_Museum_of_Astronautics).JPG), Armael (CC0 (Commons, read 2026-10-28))
- [Vostok spacecraft replica.jpg](https://commons.wikimedia.org/wiki/File:Vostok_spacecraft_replica.jpg), Pascal (Flickr pasukaru76) (CC0 (Commons, read 2026-10-28))
- [Gagarin Capsule.jpg](https://commons.wikimedia.org/wiki/File:Gagarin_Capsule.jpg), SiefkinDR (CC BY-SA 3.0 (Commons, read 2026-10-28))
- [Vostok1 descent module.jpg](https://commons.wikimedia.org/wiki/File:Vostok1_descent_module.jpg), Errabee (CC BY-SA 2.5 (Commons, read 2026-10-28))
- [Cosmonauts Exhibition, Science Museum, London, February 2016 (03).JPG](https://commons.wikimedia.org/wiki/File:Cosmonauts_Exhibition,_Science_Museum,_London,_February_2016_(03).JPG), Ardfern (CC BY 4.0 (Commons, read 2026-10-28))
- [Vostok 5 reentry capsule 03.jpg](https://commons.wikimedia.org/wiki/File:Vostok_5_reentry_capsule_03.jpg), Stolbovsky (CC BY 4.0 (Commons, read 2026-10-28))
- [Крышка люка корабля-спутника "Восток".jpg](https://commons.wikimedia.org/wiki/File:%D0%9A%D1%80%D1%8B%D1%88%D0%BA%D0%B0_%D0%BB%D1%8E%D0%BA%D0%B0_%D0%BA%D0%BE%D1%80%D0%B0%D0%B1%D0%BB%D1%8F-%D1%81%D0%BF%D1%83%D1%82%D0%BD%D0%B8%D0%BA%D0%B0_%22%D0%92%D0%BE%D1%81%D1%82%D0%BE%D0%BA%22.jpg), Ekaterina Mirfasolova (CC BY-SA 4.0 (Commons, read 2026-10-28))
- [Vostok spacecraft- cabin layout.jpg](https://commons.wikimedia.org/wiki/File:Vostok_spacecraft-_cabin_layout.jpg), (own work, Commons) (CC BY-SA 3.0 (Commons, read 2026-10-28))