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Salyut 6

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Salyut 6
The Salyut 6 station as displayed in Moscow, November 1981. At the aft end a Progress resupply craft is docked. At the forward docking station is a Soyuz spacecraft, representing Soyuz 34 according to the lettering on the side. Unusually, the Soyuz Ferry (7K-T) spacecraft is shown with solar panels, which was thought never to be the case by Western observers.
Credit: © Mark Wade

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AKA: 11F715;17KS s/n 125;DOS-5. Status: Operational 1977. First Launch: 1977-09-29. Last Launch: 1977-09-29. Number: 1 . Payload: 1,500 kg (3,300 lb). Thrust: 5.88 kN (1,322 lbf). Gross mass: 19,824 kg (43,704 lb). Unfuelled mass: 18,624 kg (41,058 lb). Specific impulse: 305 s. Height: 14.40 m (47.20 ft). Span: 17.00 m (55.00 ft).

Mishin was authorized in December 1973 to build an improved design DOS-5 version of the Salyut station using Almaz facilities. Mishin's bureau borrowed the two docking port configuration of Chelomei's Almaz OPS-2 This station's second docking port would allow rotation of crews and resupply/refueling using unmanned Progress spacecraft.

DOS-5 flew as Salyut 6 in 1977. The dual docking ports allowed near-continuous occupation of the station through crew rotation. The opportunity presented by the need to replace the Soyuz ferry spacecraft at ninety-day intervals was taken to fly 'guest cosmonauts' from friendly countries on short visits to the stations.The additional docking port also allowed resupply of the station using the Progress, an unmanned logistics vehicle. The Progress replaced the crew re-entry vehicle of the Soyuz with propellant tanks to replenish the station. The orbital module was stuffed with food, water, and equipment supplies.

Five main expeditions and 11 short duration expeditions visited the station, of which nine had international crews. A total of 676 days of piloted operations were conducted by 27 cosmonauts with steadily increasing flight duration: 18, 75, 96, 140, and 185 days. 35 automatic dockings were conducted with the station by 20 Soyuz, 12 Progress, and 1 TKS spacecraft.

Autopilot: Digital. Propulsion/RCS Systems: Unitary. Main propulsion 2 x 300 kgf, stabilization and orientation motors 32 x 24 kgf. Telemetry: High Rate. Rendezvous/Docking: Kurs. Equipment: - MKF-6 multispectral camera system - KT-140 high resolution topographical camera system (200,000 sq. km. per film frame) KRT-10 10 m diameter radio telescope - Splav alloying/materials processing furnace - Kristal containerless processor for semiconductor materials - BST-1M 1.5 m diameter cryogenic submillimeter/ ultraviolet/infrared telescope Refraktion and Zarya spectrometers for sun/moon views through earth's limb - Ispartitel experiment for coating of plates with materials - Yelena gamma ray telescope - Oasis plant growth unit - Polinom cardiovascular monitoring system.

Habitable Volume: 90.00 m3. RCS Coarse No x Thrust: 14 X 98 N. RCS Fine No x Thrust: 18 x 10 N. Electric System: 2.00 average kW.

Photo Gallery

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Salyut 6 KRT-10 Salyut 6 KRT-10 deployment Credit: RKK Energia

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Salyut 6 Engines Close-up of the engines of Salyut 6 as displayed in Moscow in 1981. Credit: © Mark Wade

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Salyut 6 in Assembly Salyut 6 in Assembly Hall Credit: RKK Energia

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Salyut 6 model Salyut 6 model showing cosmonaut on treadmill and bulk of solar camera on the right Credit: © Mark Wade

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Salyut 6 In Space Credit: RKK Energia

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Salyut 6 Cutaway The Salyut 6 space station was the first evolved design with two docking ports. Credit: RKK Energia

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Salyut 6 Salyut 6 as displayed in Moscow in 1981. Credit: © Mark Wade

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Salyut 6 Poster

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Salyut 6 Credit: Manufacturer Image

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• Cosmos 772 - . Payload: Soyuz 7K-S s/n 2L. Mass: 6,750 kg (14,880 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-S. Duration: 3.99 days. Decay Date: 1975-10-02 . USAF Sat Cat: 8338 . COSPAR: 1975-093A. Apogee: 245 km (152 mi). Perigee: 154 km (95 mi). Inclination: 51.80 deg. Period: 88.40 min.

  Unmanned military Soyuz 7K-S test flight. Recovered October 3, 1975 4:10 GMT. Unsuccessful mission. Transmitted only on 166 MHz frequency, at none of the other usual Soyuz wavelengths.
  Maneuver Summary:
  193 km X 270 km orbit to 195 km X 300 km orbit. Delta V: 8 m/s
  196 km X 300 km orbit to 196 km X 328 km orbit. Delta V: 8 m/s
  Total Delta V: 16 m/s

• Cosmos 869 - . Payload: Soyuz 7K-S s/n 3L. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-S. Duration: 17.77 days. Decay Date: 1976-12-17 . USAF Sat Cat: 9564 . COSPAR: 1976-114A. Apogee: 289 km (179 mi). Perigee: 209 km (129 mi). Inclination: 51.70 deg. Period: 89.40 min.

  Unmanned military Soyuz 7K-S test flight. Recovered December 17, 1976 10:31 GMT. Transmitted only on 20.008 MHz and 166 MHz frequencies, at none of the other usual Soyuz wavelengths.
  Maneuver Summary:
  196 km X 290 km orbit to 187 km X 335 km orbit. Delta V: 15 m/s
  187 km X 335 km orbit to 259 km X 335 km orbit. Delta V: 21 m/s
  259 km X 335 km orbit to 260 km X 345 km orbit. Delta V: 2 m/s
  260 km X 345 km orbit to 265 km X 368 km orbit. Delta V: 7 m/s
  265 km X 368 km orbit to 267 km X 391 km orbit. Delta V: 6 m/s
  267 km X 391 km orbit to 300 km X 310 km orbit. Delta V: 32 m/s
  Total Delta V: 83 m/s

• Salyut 6 - . Payload: Zarya s/n 125 s/n 5L. Mass: 19,824 kg (43,704 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned space station. Spacecraft Bus: Almaz. Spacecraft: Salyut 6. Duration: 1,763.71 days. Decay Date: 1982-07-29 . USAF Sat Cat: 10382 . COSPAR: 1977-097A. Apogee: 237 km (147 mi). Perigee: 188 km (116 mi). Inclination: 51.60 deg. Period: 88.70 min.

  Conduct of scientific and technical research and experiments; further testing of station design, on-board system and equipment. Soyuz 25 docking unsuccessful. EVA 20 Dec 1977 to examine forward docking port (no damage). EVA 29 July 1978 to retrieve externally mounted experiments (micrometeorites, biopolymers, radiation plates, materials tests). Soyuz 33 failure to dock due to propulsion failure April 1979. Soyuz 34 launched unmanned to provide replacement vehicle June 1979. EVA August 15 to dislodge 10 m diameter KRT-10 radio telescope from aft docking collar. Repair mission Soyuz T-3 December 1980 (temperature control hydraulics). Repair mission Soyuz T-4 March 1981 (stuck solar array). Salyut ejected a module on May 31 (perhaps retained Soyuz Orbital Module). Kosmos 1267 docks 19 June 1981. Commanded to reentry using Kosmos 1267 propulsion system over Pacific July 29 1982. Additional Details: here....

• Soyuz 25 - . Call Sign: Foton (Photon). Crew: Kovalyonok, Ryumin. Backup Crew: Ivanchenkov, Romanenko. Payload: Soyuz 7K-T s/n 42. Mass: 6,860 kg (15,120 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 25. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 2.03 days. Decay Date: 1977-10-11 . USAF Sat Cat: 10401 . COSPAR: 1977-099A. Apogee: 240 km (140 mi). Perigee: 194 km (120 mi). Inclination: 51.60 deg. Period: 88.80 min. Manned two crew. Unsuccessful mission. Failed to dock with Salyut 6..

• Landing of Soyuz 25 - . Return Crew: Kovalyonok, Ryumin. Nation: Russia. Related Persons: Kovalyonok, Ryumin. Program: Salyut 6. Flight: Soyuz 25. Soyuz 25 landed at 03:24 GMT. .

• Soyuz 26 - . Call Sign: Taimyr (Taimyr - Russian peninsula). Crew: Grechko, Romanenko. Backup Crew: Ivanchenkov, Kovalyonok. Payload: Soyuz 7K-T s/n 43. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 26. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 37.42 days. Decay Date: 1978-01-16 . USAF Sat Cat: 10506 . COSPAR: 1977-113A. Apogee: 235 km (146 mi). Perigee: 205 km (127 mi). Inclination: 51.60 deg. Period: 88.80 min. Manned two crew. Docked with Salyut 6. Carried Yuri Romanenko, Georgi Grechko to Salyut 6; returned crew of Soyuz 27 to Earth. Conduct of joint experiments with the Salyut-6 scientific station..

• EVA Salyut 6 EO-1-1 - . Crew: Grechko, Romanenko. EVA Duration: 0.0611 days. Nation: Russia. Related Persons: Grechko, Romanenko. Program: Salyut 6. Class: Manned. Type: Manned space station. Flight: Soyuz 26. Spacecraft Bus: Almaz. Spacecraft: Salyut 6. Stand-Up External Vehicular Activity. Inspected Salyut 6 docking port..

• Soyuz 27 - . Call Sign: Pamir (Pamir mountains). Crew: Dzhanibekov, Makarov. Backup Crew: Ivanchenkov, Kovalyonok. Payload: Soyuz 7K-T s/n 44. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 26, Soyuz 27. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 64.95 days. Decay Date: 1978-03-16 . USAF Sat Cat: 10560 . COSPAR: 1978-003A. Apogee: 237 km (147 mi). Perigee: 190 km (110 mi). Inclination: 51.70 deg. Period: 88.70 min. Manned two crew. Carried Oleg Makarov, Vladimir Dzhanibekov to Salyut 6; returned crew of Soyuz 26 to Earth. Docked with Salyut 6..

• Landing of Soyuz 26 - . Return Crew: Dzhanibekov, Makarov. Nation: Russia. Related Persons: Dzhanibekov, Makarov. Program: Salyut 6. Flight: Soyuz 26, Soyuz 27. Soyuz 26 landed at 11:25 GMT with the crew of Dzhanibekov and Makarov aboard..

• Progress 1 - . Payload: Progress s/n 102. Mass: 7,020 kg (15,470 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 26. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 18.73 days. Completed Operations Date: 1978-02-08 02:00:20 . Decay Date: 1978-02-08 02:00:20 . USAF Sat Cat: 10603 . COSPAR: 1978-008A. Apogee: 256 km (159 mi). Perigee: 173 km (107 mi). Inclination: 51.60 deg. Period: 88.70 min.

  Unmanned supply vessel to Salyut 6. Delivery of fuel, consumable materials and equipment to the Salyut 6 station. Docked with Salyut 6 on 22 Jan 1978 10:12:14 GMT. Undocked on 6 Feb 1978 05:54:00 GMT. Destroyed in reentry on 8 Feb 1978 02:00:00 GMT. Total free-flight time 3.91 days. Total docked time 14.82 days.

• Soyuz 28 - . Call Sign: Zenit (Zenith ). Crew: Gubarev, Remek. Backup Crew: Pelczak, Rukavishnikov. Payload: Soyuz 7K-T s/n 45. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 26, Soyuz 28. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 7.93 days. Decay Date: 1978-03-10 . USAF Sat Cat: 10694 . COSPAR: 1978-023A. Apogee: 246 km (152 mi). Perigee: 192 km (119 mi). Inclination: 51.60 deg. Period: 88.80 min.

  Manned two crew. Docked with Salyut 6. Delivery to the Salyut-6 station of the first international 'Intercosmos' team consisting of A.A. Gubarev (USSR) and V. Remek (Czechoslovak Socialist Republic) to carry out scientific research and experiments jointly developed by Soviet a nd Czechoslovak specialists.

• Landing of Soyuz 28 - . Return Crew: Gubarev, Remek. Nation: Russia. Related Persons: Gubarev, Remek. Program: Salyut 6. Flight: Soyuz 26, Soyuz 28. Soyuz 28 landed at 13:44 GMT. .

• Landing of Soyuz 27 - . Return Crew: Grechko, Romanenko. Nation: Russia. Related Persons: Grechko, Romanenko. Program: Salyut 6. Flight: Soyuz 26. Soyuz 27 landed at 11:19 GMT with the crew of Grechko and Romanenko aboard..

• Cosmos 1001 - . Payload: Soyuz T s/n 4L. Mass: 6,850 kg (15,100 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Soyuz T. Duration: 10.87 days. Decay Date: 1978-04-15 . USAF Sat Cat: 10783 . COSPAR: 1978-036A. Apogee: 228 km (141 mi). Perigee: 199 km (123 mi). Inclination: 51.60 deg. Period: 88.70 min.

  Manned precursor. Recovered April 15, 1978 12:02 GMT. Unsuccessful mission. Soyuz T test -failure.
  Maneuver Summary:
  202 km X 231 km orbit to 195 km X 291 km orbit. Delta V: 19 m/s
  195 km X 291 km orbit to 306 km X 322 km orbit. Delta V: 40 m/s
  306 km X 322 km orbit to 308 km X 318 km orbit. Delta V: 1 m/s
  Total Delta V: 60 m/s.
  Officially: Investigation of the upper atmosphere and outer space.

• Soyuz 29 - . Call Sign: Foton (Photon). Crew: Ivanchenkov, Kovalyonok. Backup Crew: Lyakhov, Ryumin. Payload: Soyuz 7K-T s/n 46. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 29. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 79.64 days. Decay Date: 1978-09-03 . USAF Sat Cat: 10952 . COSPAR: 1978-061A. Apogee: 248 km (154 mi). Perigee: 193 km (119 mi). Inclination: 51.60 deg. Period: 88.90 min. Manned two crew. Docked with Salyut 6. Placed on board the Salyut-6 station a crew consisting of V.V. Kovalenko and A.S. Ivanchenkov to conduct scientific and technological investigations and experiments..

• Soyuz 30 - . Call Sign: Kavkas (Caucasus ). Crew: Hermaszewski, Klimuk. Backup Crew: Jankowski, Kubasov. Payload: Soyuz 7K-T(A9) s/n 67. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 29, Soyuz 30. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T/A9. Duration: 7.92 days. Decay Date: 1978-07-05 . USAF Sat Cat: 10968 . COSPAR: 1978-065A. Apogee: 244 km (151 mi). Perigee: 194 km (120 mi). Inclination: 51.60 deg. Period: 88.80 min. Manned two crew. Docked with Salyut 6. Placed on board the Salyut-6 station, under the Intercosmos programme, a second, international, crew consisting of P.I. Klimuk (USSR) and M. Hermaszewski (Poland) to conduct scientific investigations and experiments..

• Landing of Soyuz 30 - . Return Crew: Hermaszewski, Klimuk. Nation: Russia. Related Persons: Hermaszewski, Klimuk. Program: Salyut 6. Flight: Soyuz 29, Soyuz 30. Soyuz 30 landed at 13:29 GMT. .

• Progress 2 - . Payload: Progress s/n 101. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 29. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 27.59 days. Completed Operations Date: 1978-08-04 01:30:51 . Decay Date: 1978-08-04 01:30:51 . USAF Sat Cat: 10979 . COSPAR: 1978-070A. Apogee: 307 km (190 mi). Perigee: 248 km (154 mi). Inclination: 51.60 deg. Period: 90.00 min.

  Unmanned supply vessel to Salyut 6. Delivery of fuel, consumable materials and equipment to the Salyut 6 station. Docked with Salyut 6 on 9 Jul 1978 12:58:59 GMT. Undocked on 2 Aug 1978 04:57:44 GMT. Destroyed in reentry on 4 Aug 1978 01:31:07 GMT. Total free-flight time 3.92 days. Total docked time 23.67 days.

• EVA Salyut 6 EO-2-1 - . Crew: Ivanchenkov, Kovalyonok. EVA Duration: 0.0868 days. Nation: Russia. Related Persons: Ivanchenkov, Kovalyonok. Program: Salyut 6. Class: Manned. Type: Manned space station. Flight: Soyuz 29. Spacecraft Bus: Almaz. Spacecraft: Salyut 6. Stand-Up External Vehicular Activity. Retrieved material samples and equipment..

• Progress 3 - . Payload: Progress s/n 103. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 29. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 15.76 days. Completed Operations Date: 1978-08-24 16:44:38 . Decay Date: 1978-08-24 16:44:38 . USAF Sat Cat: 10999 . COSPAR: 1978-077A. Apogee: 232 km (144 mi). Perigee: 190 km (110 mi). Inclination: 51.60 deg. Period: 88.70 min.

  Unmanned supply vessel to Salyut 6. Delivery of fuel, consumable materials and equipment to the Salyut 6 station. Docked with Salyut 6 on 9 Aug 1978 23:59:30 GMT. Undocked on 21 Aug 1978 15:42:50 GMT. Destroyed in reentry on 23 Aug 1978 16:45:00 GMT. Total free-flight time 4.10 days. Total docked time 11.66 days.

• Kamanin in Star City. - . Nation: Russia. Related Persons: Ivanchenkov, Kovalyonok, Yeliseyev. Program: Salyut 6. Flight: Soyuz 29. At a visit to Star City, Kamanin is allowed to participate together with Yeliseyev in a communications session with the EO-2 crew (Ivanchenkov, Kovalyonok) aboard Salyut 6..

• Soyuz 31 - . Call Sign: Yastreb (Hawk ). Crew: Bykovsky, Jaehn. Backup Crew: Gorbatko, Koellner. Payload: Soyuz 7K-T s/n 47. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 29, Soyuz 31. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 67.84 days. Decay Date: 1978-11-02 . USAF Sat Cat: 11010 . COSPAR: 1978-081A. Apogee: 243 km (150 mi). Perigee: 193 km (119 mi). Inclination: 51.60 deg. Period: 88.80 min. Manned two crew. Docked with Salyut 6. Delivered to the Salyut-6 station the third international 'Intercosmos' crew consisting of V F Bykovsky (USSR) and S Jaehn (German Democratic Republic) to carry out scientific research and experiments..

• Landing of Soyuz 29 - . Return Crew: Bykovsky, Jaehn. Nation: Russia. Related Persons: Bykovsky, Jaehn. Program: Salyut 6. Flight: Soyuz 29, Soyuz 31. Soyuz 29 landed at 11:40 GMT with the crew of Bykovsky and Jaehn aboard..

• Progress 4 - . Payload: Progress s/n 105. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 29. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 22.72 days. Completed Operations Date: 1978-10-27 16:27:43 . Decay Date: 1978-10-27 16:27:43 . USAF Sat Cat: 11040 . COSPAR: 1978-090A. Apogee: 247 km (153 mi). Perigee: 185 km (114 mi). Inclination: 51.70 deg. Period: 88.80 min.

  Unmanned supply vessel to Salyut 6. Delivery of fuel, consumable materials and equipment to the Salyut 6 station. Docked with Salyut 6 on 6 Oct 1978 01:00:15 GMT. Undocked on 24 Oct 1978 13:01:52 GMT. Destroyed in reentry on 26 Oct 1978 16:28:13 GMT. Total free-flight time 4.22 days. Total docked time 18.50 days.

• Landing of Soyuz 31 - . Return Crew: Ivanchenkov, Kovalyonok. Nation: Russia. Related Persons: Ivanchenkov, Kovalyonok. Program: Salyut 6. Flight: Soyuz 29. Soyuz 31 landed at 11:05 GMT with the crew of Ivanchenkov and Kovalyonok aboard..

• Cosmos 1074 - . Payload: Soyuz T s/n 5L. Mass: 6,850 kg (15,100 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Soyuz T. Duration: 60.04 days. Decay Date: 1979-04-01 . USAF Sat Cat: 11259 . COSPAR: 1979-008A. Apogee: 238 km (147 mi). Perigee: 195 km (121 mi). Inclination: 51.60 deg. Period: 88.80 min.

  Manned precursor. Recovered April 1, 1979 10:09 GMT. Soyuz T Test.
  Maneuver Summary:
  197 km X 240 km orbit to 255 km X 297 km orbit. Delta V: 33 m/s
  255 km X 297 km orbit to 264 km X 306 km orbit. Delta V: 4 m/s
  264 km X 306 km orbit to 309 km X 321 km orbit. Delta V: 17 m/s
  309 km X 321 km orbit to 279 km X 357 km orbit. Delta V: 18 m/s
  279 km X 357 km orbit to 352 km X 402 km orbit. Delta V: 32 m/s
  352 km X 402 km orbit to 363 km X 384 km orbit. Delta V: 8 m/s
  Total Delta V: 112 m/s
  Officially: Investigation of the upper atmosphere and outer space.

• Soyuz 32 - . Call Sign: Proton (Proton ). Crew: Lyakhov, Ryumin. Backup Crew: Lebedev, Popov. Payload: Soyuz 7K-T s/n 48. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 32. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 110.18 days. Decay Date: 1979-06-13 . USAF Sat Cat: 11281 . COSPAR: 1979-018A. Apogee: 256 km (159 mi). Perigee: 193 km (119 mi). Inclination: 51.60 deg. Period: 88.90 min. Manned two crew. Docked with Salyut 6. Transported a team consisting of V A Lyakhov and V V Ryumin to the Salyut-6 space station to conduct scientific investigations and experiments and repair work. Recovered June 15, 1979 16:18 GMT. Returned unmanned..

• Progress 5 - . Payload: Progress s/n 104. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 32. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 23.77 days. Completed Operations Date: 1979-04-05 00:09:54 . Decay Date: 1979-04-05 00:09:54 . USAF Sat Cat: 11292 . COSPAR: 1979-022A. Apogee: 256 km (159 mi). Perigee: 183 km (113 mi). Inclination: 51.70 deg. Period: 88.80 min.

  Unmanned supply vessel to Salyut 6. Delivery of fuel, consumable materials and equipment to the Salyut 6 station. Docked with Salyut 6 on 14 Mar 1979 07:19:21 GMT. Undocked on 3 Apr 1979 16:10:00 GMT. Destroyed in reentry on 5 Apr 1979 00:10:22 GMT. Total free-flight time 3.40 days. Total docked time 20.37 days.

• Soyuz 33 - . Call Sign: Saturn (Saturn ). Crew: Ivanov, Georgi, Rukavishnikov. Backup Crew: Aleksandrov, Aleksandr, Romanenko. Payload: Soyuz 7K-T s/n 49. Mass: 6,860 kg (15,120 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 32, Soyuz 33. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 1.96 days. Decay Date: 1979-04-12 . USAF Sat Cat: 11324 . COSPAR: 1979-029A. Apogee: 261 km (162 mi). Perigee: 194 km (120 mi). Inclination: 51.60 deg. Period: 89.00 min. Manned two crew. Flight under the Intercosmos programme of an international team consisting of N N Rukavishnikov (USSR) and G I Ivanov (Bulgaria). Unsuccessful mission. Failed to rendezvous with Salyut 6..

• Landing of Soyuz 33 - . Return Crew: Ivanov, Georgi, Rukavishnikov. Nation: Russia. Related Persons: Ivanov, Georgi, Rukavishnikov. Program: Salyut 6. Flight: Soyuz 32, Soyuz 33. Soyuz 33 landed at 16:35 GMT. .

• Progress 6 - . Payload: Progress s/n 106. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 32. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 27.61 days. Completed Operations Date: 1979-06-09 18:52:36 . Decay Date: 1979-06-09 18:52:36 . USAF Sat Cat: 11356 . COSPAR: 1979-039A. Apogee: 247 km (153 mi). Perigee: 190 km (110 mi). Inclination: 51.60 deg. Period: 88.80 min.

  Unmanned supply vessel to Salyut 6. Delivery of fuel, consumable materials and equipment to the Salyut 6 station. Docked with Salyut 6 on 15 May 1979 06:19:22 GMT. Undocked on 8 Jun 1979 07:59:41 GMT. Destroyed in reentry on 9 Jun 1979 18:52:46 GMT. Total free-flight time 3.54 days. Total docked time 24.07 days.

• Soyuz 34 - . Call Sign: Proton (Proton ). Payload: Soyuz 7K-T s/n 50. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 32. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 73.76 days. Decay Date: 1979-08-19 . USAF Sat Cat: 11387 . COSPAR: 1979-049A. Apogee: 254 km (157 mi). Perigee: 192 km (119 mi). Inclination: 51.60 deg. Period: 88.90 min.

  Docked with Salyut 6. Launched unmanned to provide return vehicle for Soyuz 32 crew of Lyakhov/Ryumin after Soyuz 33 primary propulsion system failure. Checked the operation of the spacecraft propulsion unit; transportated the crew of the Salyut-6 station back to earth.

• Landing of Soyuz 32 - . Return Crew: Lyakhov, Ryumin. Nation: Russia. Related Persons: Lyakhov, Ryumin. Program: Salyut 6. Flight: Soyuz 32. Soyuz 32 landed at 16:18 GMT. .

• Progress 7 - . Payload: Progress s/n 107. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 32. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 21.69 days. Completed Operations Date: 1979-07-20 01:57:19 . Decay Date: 1979-07-20 01:57:19 . USAF Sat Cat: 11421 . COSPAR: 1979-059A. Apogee: 251 km (155 mi). Perigee: 186 km (115 mi). Inclination: 51.60 deg. Period: 88.80 min.

  Unmanned supply vessel to Salyut 6. Delivery of fuel, consumable materials and equipment to the Salyut 6 station. Docked with Salyut 6 on 30 Jun 1979 11:18:22 GMT. Undocked on 18 Jul 1979 03:49:55 GMT. Destroyed in reentry on 20 Jul 1979 01:57:30 GMT. Total free-flight time 4.0 days. Total docked time 17.69 days.

• KRT-10 - . Payload: KRT-10. Nation: Russia. Agency: MOM. Program: Salyut 6. Flight: Soyuz 32. Spacecraft: KRT-10. Decay Date: 1979-08-26 . USAF Sat Cat: 11493 . COSPAR: 1977-097BD. Apogee: 385 km (239 mi). Perigee: 359 km (223 mi). Inclination: 51.60 deg. Period: 91.99 min. 10 m diameter radio telescope. Attached to Salyut 6 docking hatch and deployed after separation of Progress from Mir..

• EVA Salyut 6 EO-3-1 - . Crew: Lyakhov, Ryumin. EVA Duration: 0.0576 days. Nation: Russia. Related Persons: Lyakhov, Ryumin. Program: Salyut 6. Class: Manned. Type: Manned space station. Flight: Soyuz 32. Spacecraft Bus: Almaz. Spacecraft: Salyut 6. Jettisoned KRT-10 antenna from rear docking port..

• Landing of Soyuz 34 - . Return Crew: Lyakhov, Ryumin. Nation: Russia. Related Persons: Lyakhov, Ryumin. Program: Salyut 6. Flight: Soyuz 32. Soyuz 34 landed at 12:30 GMT with the crew of Lyakhov and Ryumin aboard..

• Soyuz T-1 - . Payload: Soyuz T s/n 6L. Mass: 6,850 kg (15,100 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Soyuz T. Duration: 100.38 days. Decay Date: 1980-03-25 . USAF Sat Cat: 11640 . COSPAR: 1979-103A. Apogee: 252 km (156 mi). Perigee: 213 km (132 mi). Inclination: 51.60 deg. Period: 89.20 min.

  New generation Soyuz capsule; unmanned flight to Salyut 6. Docked with Salyut 6. Recovered March 25, 1980 21:47 GMT. Unmanned test of Soyuz T design.
  Officially: Complex experimental testing of new on-board systems and assemblies under various flight conditions and operation in conjunction with the Salyut-6 orbital station.

• Progress 8 - . Payload: Progress s/n 108. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 29.50 days. Completed Operations Date: 1980-04-26 06:54:00 . Decay Date: 1980-04-26 06:54:00 . USAF Sat Cat: 11743 . COSPAR: 1980-024A. Apogee: 250 km (150 mi). Perigee: 185 km (114 mi). Inclination: 51.60 deg. Period: 88.90 min.

  Unmanned supply vessel for Salyut 6. Delivery of various cargoes to the Salyut-6 orbital station. Docked with Salyut 6 on 29 Mar 1980 20:01:00 GMT. Undocked on 25 Apr 1980 08:04:00 GMT. Destroyed in reentry on 26 Apr 1980 06:54:00 GMT. Total free-flight time 3.0 days. Total docked time 26.50 days.

• Soyuz 35 - . Call Sign: Dnepr (Dnieper ). Crew: Popov, Ryumin. Backup Crew: Andreyev, Zudov. Payload: Soyuz 7K-T s/n 51. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 35. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 55.06 days. Decay Date: 1980-06-03 . USAF Sat Cat: 11753 . COSPAR: 1980-027A. Apogee: 247 km (153 mi). Perigee: 197 km (122 mi). Inclination: 51.60 deg. Period: 88.90 min. Manned two crew. Docked with Salyut 6. Carried crew comprising L I Popov and V V Ryumin to the Salyut-6 station to carry out scientific and technical research and experiments..

• Progress 9 - . Payload: Progress s/n 109. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 35. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 24.76 days. Completed Operations Date: 1980-05-22 00:44:00 . Decay Date: 1980-05-22 00:44:00 . USAF Sat Cat: 11784 . COSPAR: 1980-033A. Apogee: 255 km (158 mi). Perigee: 185 km (114 mi). Inclination: 51.70 deg. Period: 88.80 min.

  Unmanned supply vessel for Salyut 6. Delivery of various cargoes to the Salyut-6 orbital station. Docked with Salyut 6 on 29 Apr 1980 08:09:19 GMT. Undocked on 20 May 1980 18:51:00 GMT. Destroyed in reentry on 22 May 1980 00:44:00 GMT. Total free-flight time 3.32 days. Total docked time 21.45 days.

• Soyuz 36 - . Call Sign: Orion (Orion ). Crew: Farkas, Kubasov. Backup Crew: Dzhanibekov, Magyari. Payload: Soyuz 7K-T s/n 52. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 35, Soyuz 36. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 65.87 days. Decay Date: 1980-07-31 . USAF Sat Cat: 11811 . COSPAR: 1980-041A. Apogee: 263 km (163 mi). Perigee: 190 km (110 mi). Inclination: 51.60 deg. Period: 89.00 min. Transported the fifth international crew under the INTERCOSMOS programme, comprising V N Kubasov (USSR) and B Farkas (Hungary) to the Salyut-6 station to carry out scientific research and experiments..

• Landing of Soyuz 35 - . Return Crew: Farkas, Kubasov. Nation: Russia. Related Persons: Farkas, Kubasov. Program: Salyut 6. Flight: Soyuz 35, Soyuz 36. Soyuz 35 landed at 15:07 GMT, 140 km SE Dzehezkazgan, with the crew of Farkas and Kubasov aboard..

• Soyuz T-2 - . Call Sign: Yupiter (Jupiter ). Crew: Aksyonov, Malyshev. Backup Crew: Kizim, Makarov. Payload: Soyuz T s/n 7L. Mass: 6,850 kg (15,100 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 35, Soyuz T-2. Spacecraft Bus: Soyuz. Spacecraft: Soyuz T. Duration: 3.93 days. Decay Date: 1980-06-09 . USAF Sat Cat: 11825 . COSPAR: 1980-045A. Apogee: 232 km (144 mi). Perigee: 195 km (121 mi). Inclination: 51.60 deg. Period: 88.70 min. Test flight of new Soyuz T; docked with Salyut 6. Conducted testing and development of on-board systems in the improved Soyuz T series transport vehicle under piloted conditions..

• Landing of Soyuz T-2 - . Return Crew: Aksyonov, Malyshev. Nation: Russia. Related Persons: Aksyonov, Malyshev. Program: Salyut 6. Flight: Soyuz 35, Soyuz T-2. Soyuz T-2 landed at 12:38 GMT. .

• Progress 10 - . Payload: Progress s/n 110. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 35. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 19.88 days. Completed Operations Date: 1980-07-19 01:47:18 . Decay Date: 1980-07-19 01:47:18 . USAF Sat Cat: 11867 . COSPAR: 1980-055A. Apogee: 264 km (164 mi). Perigee: 183 km (113 mi). Inclination: 51.60 deg. Period: 89.00 min.

  Unmanned supply vessel for Salyut 6. Delivery of various cargoes to the Salyut-6 orbital station. Docked with Salyut 6 on 1 Jul 1980 05:53:00 GMT. Undocked on 17 Jul 1980 22:21:00 GMT. Destroyed in reentry on 19 Jul 1980 01:47:00 GMT. Total free-flight time 3.19 days. Total docked time 16.69 days.

• Soyuz 37 - . Call Sign: Terek (Terek - river in the Caucasus). Crew: Gorbatko, Tuan. Backup Crew: Bykovsky, Liem. Payload: Soyuz 7K-T s/n 53. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 35, Soyuz 37. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 79.64 days. Decay Date: 1980-10-11 . USAF Sat Cat: 11905 . COSPAR: 1980-064A. Apogee: 273 km (169 mi). Perigee: 190 km (110 mi). Inclination: 51.50 deg. Period: 89.10 min.

  Manned two crew. Transported to the Salyut-6 station the sixth international crew under the Intercosmos programme, comprising V V Gorbatko (USSR) and Pham Tuan (Viet Nam), to conduct scientific research and experiments. Returned crew of Soyuz 35 to Earth. Recovered October 11, 1980 9:50 GMT.

• Landing of Soyuz 36 - . Return Crew: Gorbatko, Tuan. Nation: Russia. Related Persons: Gorbatko, Tuan. Program: Salyut 6. Flight: Soyuz 35, Soyuz 37. Soyuz 36 landed at 15:15 GMT with the crew of Gorbatko and Tuan aboard..

• Soyuz 38 - . Call Sign: Taimyr (Taimyr - Russian peninsula). Crew: Romanenko, Tamayo Mendez. Backup Crew: Khrunov, Lopez Falcon. Payload: Soyuz 7K-T s/n 54. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 35, Soyuz 38. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 7.86 days. Decay Date: 1980-09-26 . USAF Sat Cat: 11977 . COSPAR: 1980-075A. Apogee: 257 km (159 mi). Perigee: 195 km (121 mi). Inclination: 51.60 deg. Period: 89.00 min. Manned two crew. Docked with Salyut 6. Transported to the Salyut-6 station the seventh international crew under the INTERCOSMOS programme, comprising Y V Romanenko (USSR) and A. Tomaio Mendez (Cuba), to conduct scientific research and experiments..

• Landing of Soyuz 38 - . Return Crew: Romanenko, Tamayo Mendez. Nation: Russia. Related Persons: Romanenko, Tamayo Mendez. Program: Salyut 6. Flight: Soyuz 35, Soyuz 38. Soyuz 38 landed at 15:54 GMT. .

• Progress 11 - . Payload: Progress s/n 111. Mass: 7,014 kg (15,463 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Flight: Soyuz 35. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 73.95 days. Completed Operations Date: 1980-12-11 14:00:05 . Decay Date: 1980-12-11 14:00:05 . USAF Sat Cat: 11993 . COSPAR: 1980-079A. Apogee: 241 km (149 mi). Perigee: 188 km (116 mi). Inclination: 51.60 deg. Period: 88.70 min.

  Unmanned supply vessel for Salyut 6. Delivery of various cargoes to the Salyut-6 orbital station. Docked with Salyut 6 on 30 Sep 1980 17:03:00 GMT. Undocked on 9 Dec 1980 10:23:00 GMT. Destroyed in reentry on 11 Dec 1980 14:00:00 GMT. Total free-flight time 4.23 days. Total docked time 69.72 days.

• Landing of Soyuz 37 - . Return Crew: Popov, Ryumin. Nation: Russia. Related Persons: Popov, Ryumin. Program: Salyut 6. Flight: Soyuz 35. Soyuz 37 landed at 09:50 GMT with the crew of Popov and Ryumin aboard..

• Soyuz T-3A (cancelled) - . Crew: Lazarev, Polyakov, Strekalov. Backup Crew: Isaulov, Potapov, Rukavishnikov. Nation: Russia. Program: Salyut 6. Flight: Soyuz T-3A. Spacecraft Bus: Soyuz. Spacecraft: Soyuz T. Planned but cancelled manned flight. Crew dissolved when Lazarev failed physical in early 1981..

• Soyuz T-3 - . Call Sign: Mayak (Beacon ). Crew: Kizim, Makarov, Strekalov. Backup Crew: Kovalyonok, Polyakov, Savinykh. Payload: Soyuz T s/n 8L. Mass: 6,850 kg (15,100 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz T-3. Spacecraft Bus: Soyuz. Spacecraft: Soyuz T. Duration: 12.80 days. Decay Date: 1980-12-10 . USAF Sat Cat: 12077 . COSPAR: 1980-094A. Apogee: 260 km (160 mi). Perigee: 256 km (159 mi). Inclination: 51.60 deg. Period: 89.70 min.

  Manned three crew. Docked with Salyut 6. Tested the improved transport ship of the 'SOYUZ T' series; transported to the Salyut-6 orbital station a crew consisting of L D Kizim, O G Makarov and G M Strekalov to carry out repair and preventive work and scientific and technical investigation and experiments.

• Landing of Soyuz T-3 - . Return Crew: Kizim, Makarov, Strekalov. Nation: Russia. Related Persons: Kizim, Makarov, Strekalov. Program: Salyut 6. Flight: Soyuz T-3. Soyuz T-3 landed at 09:25 GMT. .

• Progress 12 - . Payload: Progress s/n 113. Mass: 7,020 kg (15,470 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned logistics spacecraft. Spacecraft Bus: Soyuz. Spacecraft: Progress. Duration: 55.11 days. Completed Operations Date: 1981-03-20 16:58:58 . Decay Date: 1981-03-20 16:58:58 . USAF Sat Cat: 12152 . COSPAR: 1981-007A. Apogee: 308 km (191 mi). Perigee: 247 km (153 mi). Inclination: 51.70 deg. Period: 90.00 min.

  Unmanned supply vessel to Salyut 6. Delivery of various cargoes to the Salyut-6 orbital station. Docked with Salyut 6 on 26 Jan 1981 15:56:00 GMT. Undocked on 19 Mar 1981 18:14:00 GMT. Destroyed in reentry on 20 Mar 1981 16:59:00 GMT. Total free-flight time 3.02 days. Total docked time 52.10 days.

• Soyuz T-4 - . Call Sign: Foton (Photon ). Crew: Kovalyonok, Savinykh. Backup Crew: Andreyev, Zudov. Payload: Soyuz T s/n 10L. Mass: 6,850 kg (15,100 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz T-4. Spacecraft Bus: Soyuz. Spacecraft: Soyuz T. Duration: 74.73 days. Decay Date: 1981-05-26 . USAF Sat Cat: 12334 . COSPAR: 1981-023A. Apogee: 237 km (147 mi). Perigee: 201 km (124 mi). Inclination: 51.60 deg. Period: 88.90 min. Manned two crew. Docked with Salyut 6. Transported to the Salyut-6 orbital station cosmonauts V V Kovalenok and V P Savinykh to carry out repairs and preventive maintenance and scientific and technical investigations and experiments..

• Soyuz 39 - . Call Sign: Pamir (Pamir mountains). Crew: Dzhanibekov, Gurragcha. Backup Crew: Ganzorig, Lyakhov. Payload: Soyuz 7K-T s/n 55. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 39, Soyuz T-4. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 7.86 days. Decay Date: 1981-03-30 . USAF Sat Cat: 12366 . COSPAR: 1981-029A. Apogee: 249 km (154 mi). Perigee: 198 km (123 mi). Inclination: 51.80 deg. Period: 88.90 min.

  Manned two crew. Docked with Salyut 6. Transported to the Salyut-6 orbital station the eighth international crew under the INTERCOSMOS programme, comprising V A Dzhanibekov (USSR) and Z. Gurragchi (Mongolian People's Republic) to conduct scientific investigations and experiments.

• Landing of Soyuz 39 - . Return Crew: Dzhanibekov, Gurragcha. Nation: Russia. Related Persons: Dzhanibekov, Gurragcha. Program: Salyut 6. Flight: Soyuz 39, Soyuz T-4. Soyuz 39 landed at 11:41 GMT. .

• Soyuz 40 - . Call Sign: Dnepr (Dnieper ). Crew: Popov, Prunariu. Backup Crew: Dediu, Romanenko. Payload: Soyuz 7K-T s/n 56. Mass: 6,800 kg (14,900 lb). Nation: Russia. Agency: MOM. Program: Salyut 6. Class: Manned. Type: Manned spacecraft. Flight: Soyuz 40, Soyuz T-4. Spacecraft Bus: Soyuz. Spacecraft: Soyuz 7K-T. Duration: 7.86 days. Decay Date: 1981-05-22 . USAF Sat Cat: 12454 . COSPAR: 1981-042A. Apogee: 270 km (160 mi). Perigee: 192 km (119 mi). Inclination: 51.60 deg. Period: 89.10 min. Manned two crew. Docked with Salyut 6. Transported to the Salyut-6 orbital station the ninth international crew under the INTERCOSMOS programme, comprising L I Popov (USSR), and D. Prunariu (Romania), to conduct scientific research and experiments..

• Landing of Soyuz 40 - . Return Crew: Popov, Prunariu. Nation: Russia. Related Persons: Popov, Prunariu. Program: Salyut 6. Flight: Soyuz 40, Soyuz T-4. Soyuz 40 landed at 13:58 GMT. .

• Landing of Soyuz T-4 - . Return Crew: Kovalyonok, Savinykh. Nation: Russia. Related Persons: Kovalyonok, Savinykh. Program: Salyut 6. Flight: Soyuz T-4. Soyuz T-4 landed at 12:37 GMT. .

• Burnup of Salyut 6 Space Station (USSR) - . Nation: Russia. Spacecraft Bus: Almaz. Spacecraft: Salyut 6.