Space Radar Models
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Vostok ejection seat

Shape built from published dimensions and pictures; details simplified.

Turn it in 3D

Vostok ejection seat, 3D model, three-quarter view

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

  • Vostok ejection seat, three-quarter viewThree-quarter view
  • Vostok ejection seat, from the sideFrom the side
  • Vostok ejection seat, from behindFrom behind
  • Vostok ejection seat, from aboveFrom above

About this model

Vostok ejection seat 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 6,028 triangles in a 78 kB glTF file, and is 1.8 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

MeasureValue
Length1.8 m

NO PUBLISHED DIMENSION OF THE SEAT WAS FOUND on any page opened (Factory 918, S. M. Alekseyev: Astronautix 'Vostok', astronautix.com/v/vostok.html, read 2026-10-28, names the maker and says the seat was tested from R-2, R-5 and R-7 vehicles and planned to eject at 8 to 10 km, with no size). The seat is drawn about a 1.75 m cosmonaut (the programme's limit; Gagarin was 1.57 m) and every one of its metres is READ OFF THE PHOTOGRAPHS AGAINST HIS BODY and is ILLUSTRATIVE; 1.8 m is its length from the rocket mouths to the headrest's top. (read 2026-10-28)

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 pictures; compared with photographs of the Vostok seat and of the flown suit (CC BY, CC BY-SA, public domain).

The full record

built by this project in code (tools/vostok-builder/, release 1.5.0 stage r15-c2: seat.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.

Where the map uses it. MOMENTS (internal spec 0079, stage C2, internal #1051): the ejection seat of Vostok with its pilot, as it leaves the sphere at 7 km: the silver seat with its two rocket housings and the cosmonaut in the orange SK-1 suit, two parts so the player can part them. Origin at the pan's middle; +Y runs up the rails the way the seat flies; the engine's two mouths are at -Y. No record draws it yet.

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.

References 3

What the shape was compared with. None of these pictures is in the file.

  1. Vostok ejector seat.jpgStolbovskyCC BY 4.0 (Commons, read 2026-10-28)
  2. Vostok 5 reentry capsule 01.jpgStolbovskyCC BY 4.0 (Commons, read 2026-10-28)
  3. Vostok cutaway crew seating.jpgNASAPublic domain (NASA; Commons LicenseShortName, read 2026-10-28)

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:

Vostok ejection seat 3D model by Space Radar (spaceradar.ai), MIT License

Any 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=vostok-seat" title="Vostok ejection seat, 3D model by Space Radar" width="600" height="450" loading="lazy" style="border:0;max-width:100%"></iframe>

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