# A-90 Orlyonok ekranoplan (Project 904)

> What are the dimensions of the A-90 Orlyonok?

- Category: Ground-effect craft › Soviet and Russian ekranoplans (large)
- Kind: Modern device
- Basis: Secondary source: Wikipedia, GlobalSecurity.org (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/a-90-orlyonok-ekranoplan/ · JSON: https://xemstudio.com/api/geometry?object=a-90-orlyonok-ekranoplan · Plain text: https://xemstudio.com/objects/a-90-orlyonok-ekranoplan/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 58100 | 31500 | 16300 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- The Orlyonok is the Alexeyev bureau's turboprop-cruise assault-transport ekranoplan, first flown in 1972; one survives at the Moscow Navy museum.
- The file is a 58.1 × 31.5 × 16.3 m box from Wikipedia (sourced to Komissarov). A Russian-language source quotes a 600 m² wing area instead of 304 m², so wing area is uncertain.
- Marked secondary: figures are from encyclopedic sources, not a factory document.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

## Sizes

| dimension | value |
|---|---|
| Length | 58.1 m |
| Wingspan | 31.5 m |
| Height | 16.3 m |
| Wing area | 304 m² |
| Maximum take-off weight | 140,000 kg |
| Capacity | 150 troops or 28,000 kg cargo |
| Cruise engine | 1 × Kuznetsov NK-12MK turboprop, 11,033 kW (14,795 shp), at the fin/tailplane junction, 8-blade contra-rotating propeller |
| Boost engines | 2 × Kuznetsov NK-8-4K turbofans, 103 kN each, in the nose |
| Maximum speed | 400 km/h |
| Range | 1,500 km |
| Service ceiling | 3,000 m |
| Ground-effect flying height | 5–10 m above the surface (GlobalSecurity) |
| Crew | 6 |
| Number built | 4 (one static-test airframe) |

## Where the files are

- Wikipedia: [A-90 Orlyonok](https://en.wikipedia.org/wiki/A-90_Orlyonok) — web — Publisher's page; dimensions are facts
- GlobalSecurity.org: [Project 904 Orlan class / A-90 Orlyonok](https://www.globalsecurity.org/military/world/russia/904.htm) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/a-90-orlyonok-ekranoplan/index.json

- a-90-orlyonok-ekranoplan-envelope: [STEP](https://xemstudio.com/files/hardware/a-90-orlyonok-ekranoplan/a-90-orlyonok-ekranoplan-envelope.step) · [STL](https://xemstudio.com/files/hardware/a-90-orlyonok-ekranoplan/a-90-orlyonok-ekranoplan-envelope.stl) — Envelope 58100 × 31500 × 16300 mm (Real craft: overall length × wingspan × overall height as published)

## Questions

**How big is the A-90 Orlyonok?**

58.1 m long with a 31.5 m wingspan and 16.3 m height.

**What powers the Orlyonok?**

One NK-12MK turboprop on the tail for cruise and two NK-8-4K turbofans in the nose for take-off boost.

## Fits with

- [Alexeyev KM 'Caspian Sea Monster' ekranoplan (1966)](https://xemstudio.com/objects/alexeyev-km-caspian-sea-monster/)
- [Lun-class ekranoplan MD-160 (Project 903)](https://xemstudio.com/objects/lun-class-ekranoplan-md-160/)