 A 1:144 scaleTianzhou 1 model | |
| Mission type | Tiangong space station resupply |
|---|---|
| Operator | CNSA |
| COSPAR ID | 2021-046A |
| SATCATno. | 48803 |
| Website | http://www.cnsa.gov.cn/ |
| Mission duration | 10 months and 1 day |
| Spacecraft properties | |
| Spacecraft | Tianzhou-2 |
| Spacecraft type | Tianzhou |
| Manufacturer | China Aerospace Science and Technology Corporation |
| Launch mass | 13,640 kg (30,070 lb) |
| Dry mass | 6,640 kg (14,640 lb) |
| Dimensions | 10.6 m × 3.35 m (34.8 ft × 11.0 ft) |
| Expedition | |
| Space station | Tiangong space station |
| Start of mission | |
| Launch date | 29 May 2021, 12:55:29UTC[1] |
| Rocket | Long March 7 |
| Launch site | Wenchang Satellite Launch Center, LC-2 |
| Contractor | China Academy of Launch Vehicle Technology |
| End of mission | |
| Decay date | 31 March 2022, 10:40 UTC |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Low Earth orbit |
| Inclination | 41.5° |
| Docking withTiangong space station | |
| Docking port | Tianhe Aft port |
| Docking date | 29 May 2021, 21:01 UTC[2] |
| Undocking date | 18 September 2021, 02:25 UTC |
| Time docked | 3 months and 19 days |
| Docking withTiangong space station (Relocation) | |
| Docking port | Tianhe Forward port |
| Docking date | 18 September 2021, ~06:00 UTC |
| Undocking date | 5 January 2022, 22:12 UTC |
| Time docked | 109 days, 16 hours and 12 minutes |
| Docking withChinese Space Station (Test) | |
| Docking port | Tianhe Forward port |
| Docking date | 5 January 2022, 22:59 UTC |
| Undocking date | 7 January 2022, ~22:00 UTC |
| Time docked | 1 day, 22 hours and 56 minutes |
| Docking withChinese Space Station (Test) | |
| Docking port | Tianhe Forward port |
| Docking date | 7 January 2022, 23:55 UTC |
| Undocking date | 27 March 2022, 07:59 UTC |
| Time docked | 78 days, 8 hours and 4 minutes |
| Cargo | |
| Mass | 6,640 kg (14,640 lb)[3] |
| Pressurised | 4,690 kg (10,340 lb) |
| Fuel | 1,950 kg (4,300 lb) |
 Tianzhou 2 mission logo | |
Tianzhou 2 (Chinese:天舟二号) was a mission of theTianzhou-class uncrewed cargospacecraft. The launch took place at 29 May 2021, 12:55:29UTC.[4][1] The spacecraft successfully docked with theTiangong space station later on the same day.[2]
Tianzhou 2 is a part of the construction of theTiangong space station, and is the first cargo resupply mission to the already launchedTianhe core module (CCM).[5] The spacecraft remained docked to the aft docking port of Tianhe until the concurrent crewed missionShenzhou 12 deorbited in September, after which it was moved to the forward docking port.[6] It will then conduct propellant transfer testing with Tianhe and serve as a test unit for Tianhe's robotic arm to manipulate modules as part of space station construction.[7] It undocked on 27 March 2022, did a 2-hour fast rendezvous on 30 March 2022 and burned up in the Earth's atmosphere as planned on re-entry on 31 March 2022.[8][9]
During its time in space, Tianzhou 2 conducted multiple teleoperated and autonomous rendezvous tests.[10]
TheTianzhou cargo spacecraft has several notable differences with theTiangong-1 from which it is derived. It has only three segments ofsolar panels (against 4 for Tiangong), but has 4 maneuvering engines (against 2 for Tiangong).[11]
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