Mir-2

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Basic module station "Mir-2" with the docked "Progress M1-3" ship

Mir-2 was a space station project which began in February 1976.[1] Some of the modules built for Mir-2 have been incorporated into the International Space Station (ISS). The project underwent many changes, but was always based on the DOS-8 base block space station core module, built as a back-up to the DOS-7 base block used in the Mir station. The DOS-8 base block was eventually used as the Zvezda module of the ISS. Its design lineage extends back to the original Salyut stations.[2][3][4]

Project history

The evolution of the Mir-2 project

1981 to 1987: KB Salyut Mir-2

The prototype of the central module was as Polyus. Mir-2 would be capable of docking at least four modules in ordinary operation.

December 14, 1987: NPO Energia Mir-2

Designated as OSETS (Orbital Assembly and Operations Centre). The station would be built in a 65 degree orbit and consist of 90 ton modules.

  • Launch 1 - DOS 8, providing housing for the assembly crew.
  • Launch 2 - 90 ton module.
  • Launch 3 - Truss and solar arrays.
  • Launches 4 to 6 - additional 90 ton modules.

1991: "Mir-1.5"

This would involve launch of the DOS-8, after which the Buran shuttle would grapple the module, rendezvous with Mir, and attach it to the old DOS-7 base block. This plan was later altered so that DOS-8 would maneuver and dock itself to Mir. It would remain attached for two years.

1992: "Mir-2"

The station would consist of the DOS-8 core module and a cross beam called the NEP (Science Power Platform). This was equipped with MSB retractable solar panels, Sfora thruster packages and small scientific packages.

Four 3 to 4 ton modules were planned:

  • Docking Module - with the APDS universal androgynous docking system, and a side hatch for space walks
  • Resource Module - Equipped with gyrodynes for orienting the station and a passive docking port for docking of Soyuz or Progress ferry spacecraft
  • Technology Module - with materials experiments
  • Biotechnology Module

November 1993: International Space Station built around Mir-2

The Russian Orbital Segment

Russian elements of the International Space Station include:

  • Zarya FGB, the first element launched. This was a US-funded TKS-derived propulsion module built by KB Salyut.
  • Zvezda Service Module - this is the DOS-8 station, which was launched as the third major ISS module in July 2000.
  • SO-1 (Pirs) - one of the docking modules originally designed for Buran/Mir-2 was added to the station in September 2001.
  • SO-2 Poisk - A module similar to Pirs. Poisk also provides extra space for scientific experiments, and power-supply outlets and data-transmission interfaces for external scientific payloads.
  • Rassvet -the only module delivered by NASA shuttle, in a barter exchange for the launch 'owed' for Zarya. Rassvet is used for cargo storage, science, and as a docking port for visiting spacecraft.

References

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External links

Preceded by Mir-2 project design
14 December 1987 - November 1993		 Succeeded by
Russian Orbital Segment
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