Tianzhou 2 (Chinese: 天舟二号) was a mission of the Tianzhou-class unmanned cargo spacecraft. The launch took place at 29 May 2021, 12:55:29 UTC.[4][1] The spacecraft successfully docked with the Tiangong space station later on the same day.[2]

Tianzhou 2

A 1:144 scale Tianzhou 1 model
Mission type	Tiangong space station resupply
Operator	CNSA
COSPAR ID	2021-046A
SATCAT no.	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, 12:55:29 UTC[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 with Tiangong 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 with Tiangong 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 with Chinese 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 with Chinese 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 Tiangong program ← Tianhe core module Shenzhou 12 →   Tianzhou program ← Tianzhou 1 Tianzhou 3 →

Mission profile

Tianzhou 2 is a part of the construction of the Tiangong space station, and is the first cargo resupply mission to the already launched Tianhe core module (CCM).[5] The spacecraft remained docked to the aft docking port of Tianhe until the concurrent manned mission Shenzhou 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]

Spacecraft

The Tianzhou cargo spacecraft has several notable differences with the Tiangong-1 from which it is derived. It has only three segments of solar panels (against 4 for Tiangong), but has 4 maneuvering engines (against 2 for Tiangong).[11]

References

На других языках

[es] Tianzhou 2