henzhou-9 and Tiangong-1
TV grab taken on June 24, 2012 shows Chinese astronaut Liu Wang, assisted by his teammates Jing Haipeng and Liu Yang, controlling the Shenzhou-9 spacecraft toward the Tiangong-1 space lab module. China's first manual space docking started Sunday noon. (Xinhua) |
It
means China has completely grasped space rendezvous and docking
technologies and the country is fully capable of transporting humans and
cargo to an orbiter in space, which is essential for building a space
station in 2020.
Astronaut
Liu Wang, assisted by his teammates Jing Haipeng and Liu Yang,
controlled the Shenzhou-9 spacecraft to dock with the Tiangong-1 space
lab module at 12:48 p.m., which were reconnected about seven minutes
later.
About
one and a half hours before the docking, Shenzhou-9 parted from
Tiangong-1 to a berth point 400 meters away from the module.
To
leave room for adjustments, engineers set up four berth points for the
spaceship on the same orbit 5 km, 400 meters, 140 meters and 30 meters
away from the orbiting lab.
As
highly sophisticated space manoeuvre, manual docking requires the
astronaut to connect together two orbiters traveling at 7.8 kilometers a
second in space without a hitch.
Shortly after the docking, the smiling and waving astronauts greeted the ground crew via camera.
"The
manual docking was beautifully conducted. It was very accurate and
swift, " said Liu Weibo, who is responsible for China's astronaut
system.
The manual docking was completed in only 7 minutes, 3 minutes faster than the automatic docking, said Liu.
Liu explained to Xinhua the three factors behind today's manual docking success.
Firstly,
Liu Wang has grasped the sophisticated manual docking technologies very
well and his psychological status has been sound. Secondly, the three
astronauts were in close cooperation. Thirdly, the domestically-made
docking system was reliable, he said.
The
astronauts, 343 km away from Earth, were also greeted by Chinese
oceanauts from the Mariana Trench, 7,020 meters beneath the Pacific
Ocean, where they just broke the country's dive record in a manned
submersible on Sunday morning.
"We
hope the manual docking is a great success and wish for brilliant
achievements in China's manned space and manned deep-sea dive causes,"
read the message sent by the three oceanauts aboard the manned
submersible Jiaolong.
Wu Ping, spokeswoman for China's manned space program, said Sunday the manual space docking was "a complete success."
She
told a press conference in Beijing that the three Chinese astronauts had
already re-entered the space lab module to continue their scientific
experiments.
The
spacecraft and the space lab were previously joined together by an
automated docking last Monday. The three astronauts, including the
country's first female astronaut, Liu Yang, were sent into space onboard
Shenzhou-9 on June 16 from a launch center in northwest China's Gobi
desert.
China succeeded in automated space dockings between the unmanned spaceship Shenzhou-8 and Tiangong-1 late last year.
"The
automated docking and manual docking are both essential and they serve
as a backup for each other," said Zhou Jianping, designer-in-chief of
China's manned space program.
The
manual docking is a significant step for China's manned space program
that celebrated its 20th anniversary this year, as China has fully
grasped space travel, space walk and space rendezvous and docking
technologies that are essential to building a space station, Zhou said.
China
is the third country, after the United States and Russia, to acquire
technologies and skills necessary for space rendezvous and docking and
be able to supply manpower and material to an orbiting module via
different docking methods.
The
Shenzhou-9 spacecraft is scheduled to part from the Tiangong-1 module
manually in four days and take the three astronauts back to Earth next
Friday, which would set a record for the longest space travel in the
history of China's manned space program.
Wu
Ping said China has planned about 19 billion yuan (3 billion U.S.
dollars) in budget for the country's space rendezvous and docking
missions
The
budget will cover the ongoing Shenzhou-9 spacecraft manned space docking
mission, the previous missions conducted by the Shenzhou-7 and
Shenzhou-8 spaceships, as well as the mission to be carried out by the
Shenzhou-10 spaceship next year.
Since
starting the manned space missions in 1992, Wu said, the country has
spent another 20 billion yuan on manned space missions carried out by
Shenzhou-6 and previous spaceships.
Three
astronauts who participated in China's first manual space docking
mission also congratulated those who partook a new national dive record
set by the country's manned submersible in its exploration in the deep
ocean.
"We
wish China's manned submersible can make greater achievements! May our
motherland prosper!" the three Chinese astronauts said in a video
message sent back to Earth from the Tiangong-1 space lab module around
5:40 p.m. Sunday.
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