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Luch (Altair, 11F669)

Luch (Altair) [NPO PM]

The Luch or Altair satellites were the first generation of Soviet and later Russian data relay satellites. These satellites provided communications service to the Mir space station, Buran space shuttle, Soyuz-TM spacecraft, military satellites and the TsUPK ground control center.

Luch was built by NPO-PM based on their KAUR-4 3-axis stabilized geostationary satellie platform, which featured plasma station-keeping engines and hydrazine monopropellant orientation engines. The 2400 kg satellites featured three large antennas and numerous, small helical antennas permitted data relays in the 15/14, 15/11, and 0.9/0.7 GHz bands. Each satellite was equipped with three Arion transponders by NPO Radiopribor for data transmission. The design life was five years.

Beginning in 1995, four satellites were launched. The first three were operated under the designations Kosmos 1700, Kosmos 1897 and Kosmos 2054. The Kosmos designator was dropped for the fourth satellite, which was simply refered as Luch 1. A fifth satellite was never launched.

Luch was replaced by the more capable Luch-2 / Gelios series, of which only one was launched.

Nation: USSR / Russia
Type / Application: Communication, data relay
Operator:
Contractors: NPO Prikladnoi Mekhaniki (NPO PM)
Equipment:
Configuration: KAUR-4
Propulsion: 4 × SPT-70 Stationary Plasma Thrusters
Power: 2 deployable solar arrays, batteries
Lifetime: 5 years
Mass: 24400 kg
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
Kosmos 1700 (Luch #1, Altair 11L) 1985-102A 25.10.1985 Ba LC-200/40 Proton-K Blok-DM-2
Kosmos 1897 (Luch #2, Altair 12L) 1987-096A 26.11.1987 Ba LC-200/39 Proton-K Blok-DM-2
Kosmos 2054 (Luch #3, Altair 14L) 1989-101A 27.12.1989 Ba LC-200/39 Proton-K Blok-DM-2
Luch 1 (Altair 13L) 1994-082A 16.12.1994 Ba LC-81/23 Proton-K Blok-DM-2
Luch 2 (Altair 15L) - not launched Ba Proton-K Blok-DM-2
Further Luch missions: