Salyut 2 (OPS-1) ( meaning ''Salute 2'') was a

Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

space station A space station (or orbital station) is a spacecraft which remains orbital spaceflight, in orbit and human spaceflight, hosts humans for extended periods of time. It therefore is an artificial satellite featuring space habitat (facility), habitat ...

which was launched in 1973 as part of the

Salyut programme The ''Salyut'' programme (, , meaning "salute" or "fireworks") was the first space station programme, undertaken by the Soviet Union. It involved a series of four crewed scientific research space stations and two crewed military reconnaissa ...

. It was the first

Almaz The Almaz () program was a highly secret Soviet Union, Soviet military space station program, begun in the early 1960s. Three crewed military reconnaissance stations were launched between 1973 and 1976: Salyut 2, Salyut 3 and Salyut 5. To co ...

military space station to fly. Within two weeks of its launch, the station had lost altitude control and depressurized, leaving it unusable. Its orbit decayed and it re-entered the atmosphere on 28 May 1973, without any crews having visited it.

Spacecraft

Salyut 2 was an Almaz military space station. It was designated part of the Salyut programme in order to conceal the existence of the two separate space station programmes. Salyut 2 was long with a diameter of , and had an internal habitable volume of . At launch it had a mass of . A single aft-mounted docking port was intended for use by

Soyuz Soyuz is a transliteration of the Cyrillic text Союз (Russian language, Russian and Ukrainian language, Ukrainian, 'Union'). It can refer to any union, such as a trade union (''profsoyuz'') or the Soviet Union, Union of Soviet Socialist Republi ...

spacecraft carrying cosmonauts to work aboard the station. Two solar arrays mounted at the aft end of the station near the docking port provided power to the station, generating a total of 3,120 watts of electricity. The station was equipped with 32 attitude control thrusters, as well as two RD-0225 engines, each capable of generating of thrust, for orbital manoeuvres.

Launch

Salyut 2 was launched from Site 81/23 at the

Baikonur Cosmodrome The Baikonur Cosmodrome is a spaceport operated by Russia within Kazakhstan. Located in the Kazakh city of Baikonur, it is the largest operational space launch facility in terms of area. All Russian Human spaceflight, crewed spaceflights are l ...

, atop a three-stage Proton-K rocket, serial number 283-01. The launch took place at 09:00:00 UTC on 3 April 1973, and successfully placed Salyut 2 into

low Earth orbit A low Earth orbit (LEO) is an geocentric orbit, orbit around Earth with a orbital period, period of 128 minutes or less (making at least 11.25 orbits per day) and an orbital eccentricity, eccentricity less than 0.25. Most of the artificial object ...

. Upon reaching orbit, Salyut 2 was assigned the International Designator 1973-017A, whilst

NORAD North American Aerospace Defense Command (NORAD ; , CDAAN), known until March 1981 as the North American Air Defense Command, is a combined organization of the United States and Canada that provides aerospace warning, air sovereignty, and pr ...

gave it the

Satellite Catalog Number The Satellite Catalog Number (SATCAT), also known as NORAD Catalog Number, NORAD ID, USSPACECOM object number, is a sequential nine-digit number assigned by the United States Space Command (USSPACECOM), and previously the North American Aerospac ...

06398. The third stage (8S812) of the Proton-K rocket entered orbit along with Salyut 2. On 4 April, it was catalogued in a orbit, inclined at 51.4 degrees.

Failure

Three days after the launch of Salyut 2, the Proton's spent third stage exploded, due to pressure changes within the tanks. This explosion resulted in a cloud of debris, some of which followed a similar trajectory to the station. Ten days later this debris struck the station, damaging the hull and causing depressurization. Both solar panels were torn free, removing the ability of the station to generate power and control its attitude. Three pieces of debris from the station were catalogued, and had decayed from orbit by 13 May. The remainder of the station reentered the atmosphere on 28 May 1973 over the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

. An inquiry into the failure initially determined that a fuel line had burst, burning a hole in the station. The damage from the debris collision was only discovered later.

Fidel Castro tour

When First Secretary of the Communist Party of

Cuba Cuba, officially the Republic of Cuba, is an island country, comprising the island of Cuba (largest island), Isla de la Juventud, and List of islands of Cuba, 4,195 islands, islets and cays surrounding the main island. It is located where the ...

Fidel Castro Fidel Alejandro Castro Ruz (13 August 1926 – 25 November 2016) was a Cuban politician and revolutionary who was the leader of Cuba from 1959 to 2008, serving as the prime minister of Cuba from 1959 to 1976 and President of Cuba, president ...

was in the

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

as part of a whirlwind tour in 1972, General Secretary of the Communist Party of the

Leonid Brezhnev Leonid Ilyich Brezhnev (19 December 190610 November 1982) was a Soviet politician who served as the General Secretary of the Communist Party of the Soviet Union from 1964 until Death and state funeral of Leonid Brezhnev, his death in 1982 as w ...

brought

to the Gagarin Cosmonaut Training Centre. Fidel Castro was photographed inside both the

docking trainer and the Salyut-2 (OPS-1/

) military space station.

References

{{Use British English, date=January 2014 1973 in the Soviet Union 1973 in spaceflight Salyut program Soviet military spacecraft Spacecraft which reentered in 1973 Almaz program Spacecraft launched in 1973

Spacecraft

Launch

Failure

Fidel Castro tour

See also

References