The first version of Tianzhou has a mass of 13,500 kg and can carry 6,500 kg of cargo. Tianzhou-6 is the first improved version of the spacecraft to be launched into orbit; it has a mass of about 14,000 kg and can transport 7,400 kg of cargo.[6]
Function
Based on the Tiangong-1 space station, the Tianzhou functions as the main automated cargo spacecraft for the Tiangong space station. It has pressurized, semi-pressurized and unpressurized cargo capabilities, and is able to transport airtight cargo, large extravehicular payloads and experiment platforms. It was first launched on the new Long March 7 rocket from Wenchang on April 20, 2017.[4][7]
Name
The China Manned Space Engineering Office opened a consultation for the naming of the prospective cargo ship on April 25, 2011. By May 20, it had received more than 50,000 suggestions.[8] On July 8, Yang Liwei, China's first astronaut and deputy director of the Chinese Academy of Sciences revealed that they had a short list of ten names.[9] On October 31, 2013, it was revealed that the spacecraft had been named Tianzhou (Chinese: 天舟; pinyin: Tiān Zhōu; lit. 'Heavenly Boat'), combining the Chinese names of the Tiangong (Chinese: 天宫; pinyin: Tiān Gōng) space stations and the Shenzhou (Chinese: 神舟; pinyin: Shén Zhōu) spacecraft. They also stated that they would use the two letter identification TZ.[10]
Missions
Tianzhou spacecraft were initially flown to the Tiangong space station every 6 months. From Tianzhou 6 onward, missions have been flown with the new version of Tianzhou with increased cargo capacity, allowing the launch frequency to be reduced to three ships every two years.[11]
^"中国货运飞船征名超5万个" [Chinese cargo ship over 50,000 new name] (in Chinese (China)). China Network Television. 2011-05-20. Archived from the original on 2013-12-06. Retrieved 2016-06-27.
^"中国货运飞船征名结束 龙舟等10个名字入选" [Chinese cargo ship sign name ends dragon boat 10 names selected] (in Chinese (China)). 163.com. 2011-07-09. Retrieved 2016-06-27.
^"中国载人空间站命名"天宫"货运飞船为"天舟"" [China's manned space station cargo spacecraft to be named Tianzhou] (in Chinese (China)). China News. 2013-10-31. Retrieved 2016-06-27.
^"关于招募首颗中国高职科普卫星"金陵号" 暨中国青少年科普卫星(八一08星)工程研制团队的通知" [Notice on Recruiting the Engineering Development Team of the First Chinese Higher Vocational Science Satellite "Jinling" and the Chinese Youth Science Satellite (August 08)] (in Chinese). 9 May 2022. Retrieved 9 May 2022.
^"Tianzhou 7". 17 January 2024. Retrieved 17 January 2024.