Tiangong-2
Tiangong-2 (Chinese: 天宫二号; pinyin: Tiāngōng èrhào; lit. 'Celestial Palace 2') was a Chinese space laboratory and part of the Project 921-2 space station program. Tiangong-2 was launched on 15 September 2016.[7] It was deorbited as planned on 19 July 2019.[8]
A display model of Tiangong-1 docked to the Shenzhou spacecraft. | |
Station statistics | |
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COSPAR ID | 2016-057A |
SATCAT no. | 41765 |
Crew | 2 (from Shenzhou 11, 19 October 2016 – 17 November 2016) |
Launch | 15 September 2016, 22:04:09 (UTC+8) |
Launch pad | Jiuquan LA-4/SLS-1 |
Reentry | 19 July 2019 |
Mass | 8,600 kg (19,000 lb) |
Length | 10.4 m (34 ft) |
Diameter | 3.35 m (11.0 ft) |
Pressurised volume | 14 m3 (490 cu ft)[1] |
Periapsis altitude | 369.65 km (229.69 mi) |
Apoapsis altitude | 378.4 km (235.1 mi) |
Orbital inclination | 42.79° |
Orbital speed | 7.68 km/s (4.77 mi/s) |
Orbital period | 92 minutes |
Days occupied | 26 days 11.3 hours |
Statistics as of 2016-09-22 00:00:00 UTC References: [2][3][4][5][6] |
Tiangong-2 | |||||||||||||||||
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Simplified Chinese | 天宫二号 | ||||||||||||||||
Traditional Chinese | 天宮二號 | ||||||||||||||||
Literal meaning | Celestial Palace-2 or Heavenly Palace-2 | ||||||||||||||||
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Space Laboratory | |||||||||||||||||
Simplified Chinese | 空间实验室 | ||||||||||||||||
Traditional Chinese | 空間實驗室 | ||||||||||||||||
Literal meaning | Space Laboratory | ||||||||||||||||
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Tiangong-2 was neither designed nor planned to be a permanent orbital station; rather, it is intended as a testbed for key technologies that will be used in the Chinese large modular space station, which is planned for launch between 2020 and 2022.[9]
History
The China Manned Space Engineering Office published a brief description of Tiangong-2 and its successor Tiangong-3 in 2008, indicating that at least two crewed spaceships would be launched to dock with Tiangong-2.[2]
Tiangong-2 was originally expected to be launched by the China National Space Agency by 2015[10] to replace the prototype module Tiangong-1, which was launched in September 2011.[11] In March 2011, Chinese officials stated that Tiangong-2 was scheduled to be launched by 2015.[10][12] An uncrewed cargo spacecraft will dock with the station,[10] allowing for resupply.[13]
In September 2014, its launch was postponed to September 2016.[14] Plans for visits in October 2016 by the crewed mission Shenzhou 11 and the uncrewed resupply craft Tianzhou were made public.[15] The station was successfully launched from Jiuquan aboard a Long March 2F rocket on 15 September 2016.[16] Shenzhou 11 successfully docked with Tiangong-2 on 19 October 2016.[17]
Aboard the Shenzhou 11, launched from Jiuquan Satellite Launch Center in the Gobi desert, were Commander Jing Haipeng and Chen Dong who formed the inaugural crew for the space laboratory.[18] It was China's first crewed mission for more than three years.
During the 30 days the two astronauts were aboard Tiangong-2, they conducted a number of scientific and technical experiments on the physiological effects of weightlessness, tests on human-machine collaboration on in-orbit maintenance technology and released an accompanying satellite successfully. Accompanying photography and near-distance fly-by observation were also carried out. They collected abundant data and made some achievements in programs of gamma-ray burst polarimeter, space cold atomic clock and preparation of new materials.[19]
Shenzhou 11 separated from the orbiting Tiangong-2 space lab on 17 November, reentry module landed successfully at the expected site in central Inner Mongolia Autonomous Region at about 13:59 Beijing Time.[19]
On 22 April 2017, the cargo vessel Tianzhou-1 successfully docked with Tiangong-2 marking the first successful docking and refuelling with the orbiting space laboratory.[20] It subsequently performed a second docking and refueling on 15 June 2017. On 12 September 2017, Tianzhou-1 performed the third and final docking and refuelling with Tiangong-2, with what is termed a fast docking which took 6.5 hours, rather than 2 days, to complete.[21]
In June 2018, Tiangong-2 performed orbital maneuvers lowering the orbit to 292 × 297 kilometers, likely in preparation for deorbiting. It has since returned to its usual orbit.[22][23]
In July 2019 the China Manned Space Engineering Office announced that it was planning to deorbit Tiangong-2 in the near future, but no specific date was given.[24] The station subsequently made a controlled reentry on 19 July and burned up over the South Pacific Ocean.[25]
Dimensions
The dimensions of Tiangong-2 were:
- Crew size: 2, with 30 days of life support resources.[12] The crew (from Shenzhou 11, October 2016) consists of two astronauts.
- Length: 10.4 metres (34 ft).[2]
- Maximum diameter: 4.2 metres (14 ft).[2]
- Mass: 8,600 kilograms (19,000 lb).[4]
Further developments
Tiānhé-1 is the core module of a planned modular space station. The core module and its other parts are to be launched between 2020 and 2022.
See also
- Chinese space program
- Chinese space station – a planned multi-module orbital station
- Shenzhou program
- International Space Station
- List of space stations
- Salyut programme – a similar Soviet space station
References
- https://chinaspacereport.com/spacecraft/tiangong2/
- Branigan, Tania; Sample, Ian (26 April 2011). "China unveils rival to International Space Station". The Guardian. London. Retrieved 27 April 2011.
China often chooses poetic names for its space projects, such as Chang'e – after the moon goddess – for its lunar probes; its rocket series, however, is named Long March, in tribute to communist history. The space station project is currently referred to as Tiangong, or "heavenly palace".
- huaxia, ed. (16 September 2016). "Tiangong-2 takes China one step closer to space station". Xinhua News Agency. Retrieved 16 September 2016.
- huaxia, ed. (16 September 2016). "Tiangong-2 space lab may exceed 5 years service life: expert". Xinhua News Agency. Retrieved 16 September 2016.
- Hunt, Katie; Bloom, Deborah (15 September 2016). "China launches Tiangong-2 space lab". CNN News. Retrieved 15 September 2016.
- "Space-Track.Org API Access". space-track.org. 22 September 2016. Retrieved 15 September 2016.
- de Selding, Peter B. (20 June 2016). "China prepares assembly of its space station, invites collaboration through U.N." Space News.
- https://spacenews.com/china-set-to-carry-out-controlled-deorbiting-of-tiangong-2-space-lab/
- China to begin construction of manned space station in 2019 Reuters 28 April 2017
- "China to launch Tiangong-2 and cargo spacecraft in 2015". GB Times. 13 June 2013. Retrieved 16 June 2013.
- "Tiangong-1 launch betrays China's earthly ambitions". BBC. 29 September 2011. Retrieved 21 November 2011.
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David, Leonard (11 March 2011). "China Details Ambitious Space Station Goals". Space.com. Retrieved 9 March 2011.
China is ready to carry out a multiphase construction program that leads to the large space station around 2020. As a prelude to building that facility, China is set to loft the Tiangong-1 module this year as a platform to help master key rendezvous and docking technologies.
- "China manned spaceflight program" (PDF). The Space Review. 15 October 2009. Retrieved 21 November 2011.
- Morris Jones (11 September 2014). "China's Space Station is Still on Track". SpaceDaily.
- AFP (10 September 2014). "China to launch second space lab in 2016: official". SpaceDaily.
- "China successfully launches Tiangong-2 space lab". CCTV News. 15 September 2016.
- "China's Shenzhou-11 successfully docks with Tiangong-2 spacelab". CCTV America. Retrieved 19 October 2016.
- Clark, Stuart (20 October 2016). "Two crewed space stations now orbiting Earth". The Guardian. ISSN 0261-3077. Retrieved 22 October 2016.
- "SCIO briefing on China's Tiangong 2 and Shenzhou 11 manned space mission". China.org.cn. 19 November 2016. Retrieved 24 November 2016.
- "Tiangong-2: China's first cargo spacecraft docks with orbiting space lab". The Guardian. 22 April 2017. Retrieved 22 April 2017.
- "China's Tianzhou-1 cargo craft and Tiangong-2 space lab perform final orbital docking". GBTimes. 12 September 2017. Retrieved 15 September 2017.
- Andrew Jones (20 June 2018). "China appears to be preparing to deorbit its Tiangong 2 space lab". Spacenews.
- Michelle Starr (25 June 2018). "China's Space Station Got Weirdly Close to Earth For a Few Days and the Government Isn't Talking". Science Alert.
- Jones, Andrew (12 July 2019). "China set to carry out controlled deorbiting of Tiangong-2 space lab". SpaceNews. Retrieved 17 July 2019.
- Liptak, Andrew (20 July 2019). "China has deorbited its experimental space station". The Verge. Retrieved 21 July 2019.
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