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Salyut 2 (OPS-1)
Station statistics
COSPAR ID	1973-017A
SATCAT no.	06398
Call sign	Salyut 2
Crew	3
Launch	3 April 1973; 09:00:00 UTC
Launch pad	Baikonur Site 81/23
Reentry	28 May 1973
Mass	18,500 kilograms (40,800 lb)
Length	14.55 metres (47.7 ft)
Diameter	4.15 metres (13.6 ft)
Pressurised volume	99 cubic metres (3,500 cu ft)
Periapsis altitude	257 kilometres (160 mi)
Apoapsis altitude	278 kilometres (173 mi)
Orbital inclination	51.6°
Orbital period	89.8 minutes
Days in orbit	54 days
No. of orbits	866
Distance travelled	35,163,530 kilometres (21,849,600 mi)
	Statistics as of 4 April 1973
Configuration
	An Almaz space station

Salyut 2 (OPS-1) (Russian: Салют-2 meaning Salute 2) was a Soviet space station which was launched in 1973 as part of the Salyut programme. It was the first Almaz 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.^[2] It was designated part of the Salyut programme in order to conceal the existence of the two separate space station programmes.^[3]

Salyut 2 was 14.55 metres (47.7 ft) long with a diameter of 4.15 metres (13.6 ft),^[4]^[5]^[6] and had an internal habitable volume of 90 cubic metres (3,200 cu ft). At launch it had a mass of 18,950 kilograms (41,780 lb).^[7] A single aft-mounted docking port was intended for use by Soyuz 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.^[8] The station was equipped with 32 attitude control thrusters, as well as two RD-0225 engines, each capable of generating 3.9 kilonewtons (880 lb_f) of thrust, for orbital manoeuvres.^[7]

Launch

Salyut 2 was launched from Site 81/23 at the Baikonur Cosmodrome, atop a three-stage Proton-K rocket, serial number 283-01.^[9] The launch took place at 09:00:00 UTC on 3 April 1973,^[10] and successfully placed Salyut 2 into low Earth orbit.^[9] Upon reaching orbit, Salyut 2 was assigned the International Designator 1973-017A, whilst NORAD gave it the Satellite Catalog Number 06398.^[1] The third stage (8S812) of the Proton-K rocket entered orbit along with Salyut 2. On 4 April, it was catalogued in a 192 by 238 kilometres (119 by 148 mi) orbit, inclined at 51.4 degrees.^[11]

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.^[3]^[1]

Three pieces of debris from the station were catalogued, and had decayed from orbit by 13 May.^[11] The remainder of the station reentered the atmosphere on 28 May 1973^[2]^[11] over the Pacific Ocean.^[4]

An inquiry into the failure initially determined that a fuel line had burst, burning a hole in the station.^[3] The damage from the debris collision was only discovered later.^[when?]

Fidel Castro tour

When First Secretary of the Communist Party of Cuba Fidel Castro was in the Soviet Union as part of a whirlwind tour in 1972, General Secretary of the Communist Party of the Soviet Union Leonid Brezhnev brought Fidel Castro to the Gagarin Cosmonaut Training Centre.^[12] Fidel Castro was photographed inside both the Soyuz docking trainer^[13]^{[better source needed]} and the Salyut-2 (OPS-1/Almaz) military space station.^[14]^{[better source needed]}

References

^ ^a ^b ^c "Salyut 2". United States National Space Data Center. 8 October 2010. Retrieved 4 January 2010.
^ ^a ^b Portree, David S. F. (March 1995). "Mir Hardware Heritage" (PDF). NASA. Archived from the original (PDF) on 7 September 2009. Retrieved 4 January 2011.
^ ^a ^b ^c Zak, Anatoly. "OPS-1 (Salyut-2) space station". RussianSpaceWeb. Retrieved 4 January 2011.
^ ^a ^b Mark Wade. "Almaz OPS | Part of Almaz Family". Encyclopedia Astronautica. Archived from the original on 20 August 2016.
^ Emied Jacinto (6 May 2013). "Space Station". Mousehunt – via SlideShare.
^ David M. Harland. "Salyut | Soviet Space Station Series". Encyclopædia Britannica.
^ ^a ^b Zak, Anatoly. "Almaz space station technical overview". RussianSpaceWeb. Retrieved 5 January 2011.
^ Zak, Anatoly. "Almaz space station technical overview - Transfer section". RussianSpaceWeb. Retrieved 5 January 2011.
^ ^a ^b Wade, Mark. "Proton-K". Encyclopedia Astronautica. Archived from the original on 22 August 2010. Retrieved 2 January 2011. 1973 April 3...Launch Vehicle: Proton-K. LV Configuration: Proton-K 283-01...Salyut 2
^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 4 January 2011.
^ ^a ^b ^c McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 4 January 2011.
^ "Castro Speech Data Base - Latin American Network Information Center, LANIC".
^ "REGION, USSR. First Secretary of the Communist Party of Cuba Fidel". Archived from the original on 11 May 2021.
^ "Moscow. General Secretary of the Central Committee of the CPSU Leonid". Archived from the original on 12 May 2021.

[nasa20101008-1] "Salyut 2". United States National Space Data Center. 8 October 2010. Retrieved 4 January 2010.

[portree1995-2] Portree, David S. F. (March 1995). "Mir Hardware Heritage" (PDF). NASA. Archived from the original (PDF) on 7 September 2009. Retrieved 4 January 2011.

[RSW-3] Zak, Anatoly. "OPS-1 (Salyut-2) space station". RussianSpaceWeb. Retrieved 4 January 2011.

[EA-4] Mark Wade. "Almaz OPS | Part of Almaz Family". Encyclopedia Astronautica. Archived from the original on 20 August 2016.

[5] Emied Jacinto (6 May 2013). "Space Station". Mousehunt – via SlideShare.

[6] David M. Harland. "Salyut | Soviet Space Station Series". Encyclopædia Britannica.

[RSW-Almaz-7] Zak, Anatoly. "Almaz space station technical overview". RussianSpaceWeb. Retrieved 5 January 2011.

[8] Zak, Anatoly. "Almaz space station technical overview - Transfer section". RussianSpaceWeb. Retrieved 5 January 2011.

[EA-Proton-9] Wade, Mark. "Proton-K". Encyclopedia Astronautica. Archived from the original on 22 August 2010. Retrieved 2 January 2011. 1973 April 3...Launch Vehicle: Proton-K. LV Configuration: Proton-K 283-01...Salyut 2

[LL-10] McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 4 January 2011.

[satcat-11] McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 4 January 2011.

[12] "Castro Speech Data Base - Latin American Network Information Center, LANIC".

[13] "REGION, USSR. First Secretary of the Communist Party of Cuba Fidel". Archived from the original on 11 May 2021.

[14] "Moscow. General Secretary of the Central Committee of the CPSU Leonid". Archived from the original on 12 May 2021.

v t e Salyut programme
Salyut stations (DOS)	Salyut 1 (DOS-1) DOS-2 Kosmos 557 (DOS-3) Salyut 4 (DOS-4) Salyut 6 (DOS-5) Salyut 7 (DOS-6)
Almaz stations (OPS)	Salyut 2 (OPS-1) Salyut 3 (OPS-2) Salyut 5 (OPS-3) OPS-4 (not flown)
Successors	Mir (DOS-7) Zvezda (DOS-8)
TKS spacecraft	Kosmos 1267 (TKS-2) Kosmos 1443 (TKS-3) Kosmos 1686 (TKS-4)
Support craft	Soyuz Progress TKS VA FGB
Lists	Expeditions Spaceflights crewed uncrewed Visitors Spacewalks
Related	Return from Orbit (1984 film)

Kommunal.az

Spacecraft

Launch

Failure

Fidel Castro tour

See also

References

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v t e Almaz program
Salyut 2 (OPS-1) Salyut 3 (OPS-2) Salyut 5 (OPS-3) OPS-4 (not flown)
See also: TKS spacecraft Salyut programme Excalibur Almaz