Voskhod 3KD
Shape built from published dimensions and pictures; details simplified.
Turn it in 3D
Open the 3D viewer (www.spaceradar.ai).
The viewer loads when you ask: about 700 kB the first time (three.js and the model), much less after.
Pictures 4
Three-quarter view
From the side
From behind
From above
About this model
Voskhod 3KD is one of the 203 3D models Space Radar made itself: a crewed craft or station, built in code from published dimensions and photographs, with no image-to-3D generator and no one else’s mesh.
Shape built from published dimensions and pictures; details simplified. It has 33,486 triangles in a 329 kB glTF file, and is 5.3 m across at full scale.
It is part of the map’s library; no object on the live map is drawn with it today.
Dimensions and their sources
| Measure | Value |
|---|---|
| Sphere diameter | 2.3 m |
| Instrument module length | 2.25 m |
| Instrument module diameter | 2.43 m |
| Volga length | 2.5 m |
| Volga ring width | 1.2 m |
| Volga outer hatch width | 0.65 m |
| Volga stowed proud | 0.74 m |
| Umbilical | 5.35 m |
| Airbooms | 40 |
Wikipedia, 'Voskhod (spacecraft)' (read 2026-11-03): the airlock 250 kg, 77 cm high collapsed for launch, extended 2.5 m long with a 1 m internal and a 1.2 m external diameter; the back-up solid-fuel retrorocket on top of the descent module; the seat removed, two seats at 90 degrees; the airlock 'opposite the entry hatch' (Voskhod 2). Wikipedia, 'Voskhod 2' (read 2026-11-03): the fabric tube made rigid by about 40 airbooms in three independent groups, seven minutes to inflate, four spherical oxygen tanks, two lights, three 16 mm cameras (two in the airlock, one on a boom on the upper ring), the 5.35 m umbilicus. Wikipedia, 'Vostok (spacecraft)' (read 2026-10-28, row vostok-3ka): the 2.3 m sphere and the instrument module 2.25 m by 2.43 m. FROM THE TASK BRIEF, not found on the pages read: the airlock's 74 cm beyond the hull at launch, the 65 cm outer hatch, the 2.5 m3 of volume. NOT PUBLISHED on any page opened, so READ OFF THE PHOTOGRAPHS and ILLUSTRATIVE: the oxygen spheres' size (0.34 m) and place, the 40 ribs on the rings, the ring's height, the hatch's hinge and handle, the boom's length (0.8 m) and the camera on it, the airlock's height above the sphere's equator (8 degrees), the back-up retro rocket's size (0.8 m wide at its foot, 0.9 m tall) and its four nozzles.
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 Voskhod 2 airlock on display (CC0, public domain), line drawings (public domain, NASA) and a Voskhod capsule (CC BY-SA 3.0).
The full record
built by this project in code (tools/vostok-builder/, release 1.7.2: voskhod3kd.py); no agency or museum 3D model of this craft under a free licence was found (read 2026-11-03): NASA 3D Resources has nothing of Voskhod; the Smithsonian's records show physical models only; the downloadable meshes a web search found are sold or personal-use only. Wikimedia Commons does hold ONE 3D file, 'Voskhod 2 Deployed.stl' (Fac-tory-o, CC BY-SA 4.0, 2018): a plain print-style model whose airlock is a bare tube; it was NOT downloaded and nothing of it is used (its preview picture was looked at). So the craft is built, as the quality bar says, from opened dimensions and several photographs of the flight-standard airlock and suit. No image-to-3D model was used and no published mesh.
Where the map uses it. NOTHING YET, as a route on the map: no object of the map is Voskhod 2 (it came down on 19 March 1965). It is the spacecraft of the Voskhod 2 Moment (release 1.7.2): the Voskhod 3KD, a Vostok sphere and instrument module with a back-up solid retro rocket on top, two seats (not drawn) and the inflatable VOLGA airlock opposite the entry hatch, in the parts they come apart and change in. Origin: the lower interface of the instrument module, +Y up the axis with the sphere on top; the airlock's axis runs toward azimuth 180 (-X) at 8 degrees above the sphere's equator; the main engine's mouth is at the origin and the back-up retro rocket's four nozzles at y = 5.36
Licence note. The shape is this project's, under this repository's licence, built from published numbers (facts). Every picture it was compared with is listed under references; each was only looked at, none was traced, copied or projected, and the share-alike ones (CC BY-SA) are credited all the same. The Vostok parts are this project's own vostok-3ka, whose references are listed on its row.
References 11
What the shape was compared with. None of these pictures is in the file.
- Airlock of Voskhod 2 (a).JPGArmaelCC0 (Commons, read 2026-11-03)
- Airlock of Voskhod 2 (b).JPGArmaelCC0 (Commons, read 2026-11-03)
- Voskhod-2 airlock and spacesuit.jpgKucharekPublic domain (Commons, read 2026-11-03)
- Voskhod spacecraft diagram.pngReubenbarton (English Wikipedia)Public domain (Commons, read 2026-11-03)
- Voskhod spacecraft cutaway.jpgNASAPublic domain (Commons, read 2026-11-03)
- Voskhod 1 capsule on display, 2016.jpgAndrew GrayCC BY-SA 3.0 (Commons, read 2026-11-03)
- 1980 CPA 5064.jpgUSSR PostPublic domain (Commons, read 2026-11-03)
- Voskhod 2 Deployed.stlFac-tory-oCC BY-SA 4.0 (Commons, read 2026-11-03)
- Voskhod Spacecraft Life Support Unit (54838030429).jpgSteve JurvetsonCC BY 4.0 (Commons, read 2026-11-03)
- Voskhod (spacecraft), WikipediaWikipedia contributorsCC BY-SA 4.0 (Wikipedia's text); the numbers are facts
- Voskhod 2, WikipediaWikipedia contributorsCC BY-SA 4.0 (Wikipedia's text); the numbers are facts
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Use it
The model is under the MIT licence: use it, change it and share it, in any project, also a paid one. Keep the credit:
Voskhod 3KD 3D model by Space Radar (spaceradar.ai), MIT LicenseAny glTF 2.0 loader that reads meshopt compression (EXT_meshopt_compression) opens the file: three.js with its MeshoptDecoder, Babylon.js, model-viewer. Tools such as glTF-Transform can write an uncompressed copy.
Or embed the viewer in your page:
<iframe src="https://www.spaceradar.ai/model/?id=voskhod-3kd" title="Voskhod 3KD, 3D model by Space Radar" width="600" height="450" loading="lazy" style="border:0;max-width:100%"></iframe>Related models
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