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Beriev Be-2500 Neptun (ground-effect super-heavy amphibian concept)

What are the dimensions of the Beriev Be-2500 Neptun? · Modern device · basis: Secondary source: Wikipedia, GlobalSecurity.org (copy of the maker's figures; the maker publishes none directly)

Also called: be-2500 dimensions, beriev be-2500 wingspan, be-2500 neptun size, largest aircraft concept ground effect, бе-2500 размеры, be-2500 length, be-2500 dimensiones, be-2500 height

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

length
123000 mm
width
156000 mm
height
29120 mm

Notes

  • The Be-2500 was a Beriev study for a 2,500-tonne amphibian that could cruise in ground effect or at altitude; it was never built.
  • The file is a 123 × 156 × 29.12 m box from Wikipedia. GlobalSecurity publishes a smaller 115.5 × 125.51 m planform with the same height, so dimensions depend on the design iteration.
  • Marked secondary.
  • 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.

Beriev Be-2500 Neptun size chart

dimensionvalue
Length123 m (403 ft 7 in) — GlobalSecurity: 115.5 m
Wingspan156 m (511 ft 10 in) — GlobalSecurity: 125.51 m
Height29.12 m (95 ft 6 in)
Wing area3,428 m² — GlobalSecurity: 3,184 m²
Empty weight1,500,000 kg
Maximum take-off weight2,500,000 kg
Payload1,000,000 kg
Engines6 × Kuznetsov NK-116 turbofans, 172 kN each (proposed)
Maximum speed in ground effect450 km/h
Range in ground effect10,700 km

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

WikipediaBeriev Be-2500webPublisher's page; dimensions are facts
GlobalSecurity.orgBeriev Be-2500 specificationswebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

beriev-be-2500-neptun-envelopeEnvelope 123000 × 156000 × 29120 mm (Real craft: overall length × wingspan × overall height as published (Wikipedia figures); unbuilt concept)STEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
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Plain text: sheet.txt · JSON: /api/geometry?object=beriev-be-2500-neptun

length
Schematic, not to scale.

Fits with

Questions

How big would the Be-2500 have been?

Wikipedia gives 123 m long, 156 m span and 29.12 m high; GlobalSecurity gives 115.5 m × 125.51 m.