{"id":14671,"date":"2017-04-29T17:47:27","date_gmt":"2017-04-29T09:47:27","guid":{"rendered":"https:\/\/wp-productionenv-bjg9h2g2bgg5b8aa.southeastasia-01.azurewebsites.net\/news\/chinas-space-station-plan-bolstered-by-year-of-successes\/"},"modified":"2017-04-29T17:47:27","modified_gmt":"2017-04-29T09:47:27","slug":"chinas-space-station-plan-bolstered-by-year-of-successes","status":"publish","type":"post","link":"https:\/\/starpath.global\/news\/chinas-space-station-plan-bolstered-by-year-of-successes\/","title":{"rendered":"China\u2019s space station plan bolstered by year of successes"},"content":{"rendered":"
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Artist\u2019s concept of China\u2019s planned space station. Credit: CMSA<\/figcaption><\/figure>\n

A series of achievements in China\u2019s space program over the last 12 months have set the stage to start construction of the country\u2019s first space station in 2019, a year later than previously scheduled, officials said Friday.<\/p>\n

\u201cSince 2016, we have successfully launched the Long March 7 carrier rocket, the Tiangong 2 space lab, the Shenzhou 11 manned spacecraft and the Tianzhou 1 cargo spacecraft,\u201d said Wang Zhaoyao, director of the China Manned Space Agency. \u201cThe four flights achieved success in China\u2019s manned space program, and laid a solid foundation for the building and long-term operation of a space station.\u201d<\/p>\n

The Long March 7 rocket is vital for launching supply ships, and eventually crews, to China\u2019s future space station. It has now flown two times successfully.<\/p>\n

The Tiangong 2 orbital module launched in September 2016, welcoming two Chinese astronauts on the Shenzhou 11 spacecraft in October for a one-month expedition, the country\u2019s longest human spaceflight to date.<\/p>\n

The heavy-lifting Long March 5 rocket \u2014 not mentioned by Wang \u2014 took off on its maiden flight in November. The powerful launcher is needed to place heavy space station modules into orbit.<\/p>\n

And the Tianzhou 1 robotic cargo craft launched on a Long March 7 rocket April 20, linked up with Tiangong 2 two days later, and accomplished China\u2019s first in-space refueling test on Thursday.<\/p>\n

The rapid-fire launch campaign has bolstered confidence that the key components needed for China\u2019s space program will be ready when construction begins, officials said.<\/p>\n

A core module, named Tianhe 1, is scheduled for launch in 2019 to begin assembly of the space station. Two support sections will launch by 2022 to complete construction of the space station, which officials said should be operational for at least 20 years.<\/p>\n

Three-person crews will live on the space station for three-to-six months, officials said. The finished outpost will have a mass of more than 60 metric tons, about one-seventh that of the International Space Station, and comparable to the mass of NASA\u2019s Skylab station in the 1970s.<\/p>\n

With crew and cargo transport ships docked, the station\u2019s mass will rise to around 90 metric tons, or 200,000 pounds.<\/p>\n

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Animation of the Tiangong 2 space lab (left) and Tianzhou spacecraft (right) docked in orbit. Credit: CCTV<\/figcaption><\/figure>\n

\u201cFrom June of last year to yesterday, four planned flight missions of the space lab phase were all completed,\u201d Wang said in a press conference Friday. \u201cIn retrospect, we have taken note of many important achievements and successful experiences that are worth learning.\u201d<\/p>\n

China\u2019s latest mission, Tianzhou 1, demonstrated the country\u2019s ability to resupply and refuel the future space station. Weighing more than 28,460 pounds (12,910 kilograms) at liftoff, the robotic cargo craft was the largest and heaviest spacecraft ever launched by China.<\/p>\n

Tianzhou 1 will remain docked with the Tiangong 2 space lab until around late June, then spend three months conducting standalone experiments before re-entering Earth\u2019s atmosphere.<\/p>\n

\u201cIn the next phase, the cargo spacecraft will remain docked with the space lab as they orbit together,\u201d Wang said. \u201cThe cargo spacecraft will also undock and fly alone and try different approaches to improve in-orbit refueling technology. After that, the cargo spacecraft will land under control in a designated area in the South Pacific Ocean, while the space lab will remain in space for further exploration.\u201d<\/p>\n

The solar-powered Tianzhou 1 spacecraft will detach from Tiangong 2 and attempt a \u201cfast rendezvous\u201d profile on another approach to the space lab in the coming weeks, according to Wang. The rendezvous trajectory will mimic the path future cargo missions will take, allowing for delivery of supplies and fuel the same day of launch.<\/p>\n

\u201cThe current rendezvous and docking process needs two days for preparation,\u201d Wang said. \u201cIf the technology of autonomous fast rendezvous and docking technology succeeds, we only need six-and-a-half hours for rendezvous and docking between two spacecraft. It will greatly enhance our work efficiency.\u201d<\/p>\n

Russian Progress supply ships and Soyuz crew ferry craft often dock with the International Space Station around six hours after liftoff.<\/p>\n

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China\u2019s first heavy-lift rocket, the Long March 5, took off on its maiden flight in November 2016. Long March 5 rockets will loft the major pieces of China\u2019s space station. Credit: Xinhua<\/figcaption><\/figure>\n

Chinese officials say the Tianzhou resupply missions will carry up to 14,300 pounds \u2014 6.5 metric tons \u2014 of cargo to the planned orbital complex. The fuel transfer system will deliver up to 4,600 pounds \u2014 2.1 metric tons \u2014 of liquid propellant to the station\u2019s propulsion system.<\/p>\n

\u201cThe payload ratio and the amount of propellant refueling are on a par with current international standards for space cargo transportation systems, if not being ahead of them,\u201d Wang said.<\/p>\n

The Tianzhou cargo carrier is bigger than the International Space Station\u2019s current visiting vehicles, capable of ferrying more equipment than Russia\u2019s Progress, the U.S.-built commercial Cygnus and Dragon, and the Japanese HTV spaceships.<\/p>\n

\u201cAs the last (test) mission before the space station is built, the mission is significant in serving as a link between past and future,\u201d Wang said.<\/p>\n

Tianzhou means \u201cheavenly vessel\u201d in Chinese.<\/p>\n

The simulated cargo aboard Tianzhou 1 represents the equipment a three-person crew would need for one month in space, officials said. The payloads include crew provisions, water tanks and oxygen and nitrogen vessels designed to replenish the space lab\u2019s breathable atmosphere.<\/p>\n

While no crews will be present during Tianzhou 1\u2019s mission, the freighter carries several experiments, including one on \u201cnon-Newtonian\u201d gravity, according to Chinese media reports.<\/p>\n

Zhao Guangheng, chief designer of the space lab\u2019s utilization system, said the non-Newtonian gravitational experiment will verify the performance of a high-precision electrostatic suspension accelerometer.<\/p>\n

\u201cThe accelerometer performance index has reached the international advanced level, which will provide important technical support for our country to carry out research of basic space physics, weak force measurement and gravity gradient measurements,\u201d Zhao said Friday.<\/p>\n

Other research investigations will study the proliferation and differentiation of human embryonic stem cells into germ cells to gather data on the possibility of human reproduction in space, China\u2019s state-run Xinhua news agency reported.<\/p>\n

The stem cells and embryos of mice are also on-board Tianzhou for an experiment into how animals and humans could regrow lost tissues and organs, Xinhua said. Researchers also sent up an experiment to test out a new medicine for osteoporosis.<\/p>\n

Wang told reporters Friday that Tianzhou 1 will also deploy an experimental CubeSat later in its mission and test other technologies.<\/p>\n

\u201cAn advanced navigation, guidance and control device and new domestic-made components will be tested in orbit,\u201d Wang said. \u201cAn active vibration isolation technology will also be tested. Those tests will be carried out one-by-one.\u201d<\/p>\n

Future Tianzhou spacecraft could carry replacements for large station components, like a solar array wing, service other satellites in orbit, and be repurposed as a deep space tug for missions to the moon, according to Yang Baohua, vice president of the China Aerospace Science and Technology Corp., the Chinese spacecraft\u2019s lead contractor.<\/p>\n

Asked whether Tianzhou supply ships could fly to the International Space Station, Yang replied that China\u2019s exclusion from the program \u2014 a policy enshrined in U.S. law \u2014 means the spacecraft is not technically compatible with the ISS docking mechanisms.<\/p>\n

\u201cBecause of this, the technological standards, such as the interfaces, are yet to be unified, and that is why the docking cannot be fulfilled in the short term,\u201d Yang said. \u201cHowever, the aerospace staff in China is willing to work on behalf of the International Space Station, because space exploration, the manned endeavor, should be a cause shared by the entire human race in peace.\u201d<\/p>\n

Wang Zhaoyao from China\u2019s human spaceflight agency said the country\u2019s engineers plan to make their spacecraft fit with a variety of possible destinations.<\/p>\n

\u201cChina is enabled by both of its technologies and competence to transport freight to the International Space Station,\u201d Wang said. However \u2026 we need, specifically, to take a step further to solve problems with different interfaces, which has drawn considerable concern from the international community. In the past few years, the country has been engaged in standardizing the interfaces of its spacecraft, especially in regard to manned spaceflights. It\u2019s like the diversity of cell phones which cannot be recharged because of unmatched outlets.\u201d<\/p>\n

Since China\u2019s first astronaut flight in 2003, crews have performed automated and manual docking maneuvers and conducted a spacewalk.<\/p>\n

Wang said the modules for China\u2019s space station are undergoing preliminary testing, and officials have signed cooperation agreements with the United Nations Office for Outer Space Affairs to provide experiment opportunities for scientists from all nations, including developing countries.<\/p>\n

Zhao, who is responsible for experiments on the space station, said the orbiting research complex will host science and engineering investigations across a range of disciplines.<\/p>\n

He identified life science, biotechnology, microgravity fluid dynamics, combustion science, materials science, basic physics, astronomy and astrophysics, space environment monitoring, Earth observation and technological demonstrations as key areas for experiments on the Chinese space station.<\/p>\n

Email the author.<\/i><\/b><\/p>\n

Follow Stephen Clark on Twitter: @StephenClark1.<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Artist\u2019s concept of China\u2019s planned space station. Credit: CMSA A series of achievements in China\u2019s space program over the last 12 months have set the stage to start construction of the country\u2019s first space station in 2019, a year later than previously scheduled, officials said Friday. \u201cSince 2016, we have successfully launched the Long March […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[135,1612,1545,205,1733,1613,2588,3331],"class_list":["post-14671","post","type-post","status-publish","format-standard","hentry","category-news","tag-china","tag-chinese-space-station","tag-human-spaceflight","tag-long-march","tag-long-march-5","tag-long-march-7","tag-tiangong-2","tag-tianhe-1"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/14671"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=14671"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/14671\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=14671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=14671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=14671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}