China's Space Program News Thread

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More than 20 percent of China's operating satellites are working beyond their expected lifespan, Chinese media reported on Feb 21.

Yang Baohua, head of China Academy of Space Technology under the China Aerospace Science and Technology Corp, told Science and Technology Daily that at the end of 2012, 17 out of about 80 Chinese satellites in orbit were operating longer than their designed service periods.

Several of the satellites have been operating as long as two to three times beyond their designed lifespan, he said.
 
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China's second moon orbiter, Chang'e-2, has arrived in outer space about 20 million km from the Earth, marking a new breakthrough in the nation's efforts for deep space exploration, Chinese scientists said on Thursday.

The probe is now continuing its deep space travel under normal conditions, according to the State Administration of Science, Technology and Industry for National Defence (SASTIND).

Scientific planning, innovative orbit design, accurate observation and control are the major factors that helped Chang'e-2 save fuel in its flight and guaranteed successful travel in outer space, said Wu Weiren, chief designer of China's lunar probe program...
 

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China's new spacecraft will be launched sometime between June and August, a spokesperson for the office of the country's space manned program said in a statement released Thursday. Three Chinese astronauts will board the Shenzhou-10, which is expected to dock with the orbiting lab module Tiangong-1, according to the statement.

The Tiangong-1 was sent into space in September 2011. It later docked with the Shenzhou-8 unmanned spacecraft in November 2011, and with the Shenzhou-9 manned spacecraft in June 2012.

After years of testing, the new mission will mark the first formal application of the manned space transportation system, the statement said. The objectives of the new mission include further assessing the performance of the docking system, the combination's capabilities in supporting life and work, and the abilities of astronauts on the job, according to plans.

Research on astronauts' abilities to adapt to the environment in the space module will also be conducted, in addition to tests on repairing orbiting spacecraft and other key technologies necessary for developing a space station.


China plans to build its own space station around 2020.

During the mission, astronauts will also give science lectures to teenage spectators back on Earth, the statement said.


The statement also offered information on ongoing preparations for the mission: general assembly has been completed on the Shenzhou-10, and the spacecraft is currently being tested; all tests have been completed on its carrier rocket, a modified model of the Long March-2F; astronauts are being trained according to plan; and the Tiangong-1 is in good condition.
 

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A rocket expert said Friday that China has developed a modified model of the Long March-3B carrier rocket for an upcoming moon landing mission to be completed by the Chang'e-3 moon orbiter.

The orbiter's structure and size are considerably different than those of its predecessors, requiring some modifications for its carrier rocket, according to Liang Xiaohong, Communist Party of China (CPC) chief of the China Academy of Launch Vehicle Technology.

With its improved design, the modified carrier rocket's reliability has been increased and its carrying capacity has been boosted by 30 kg, Liang said. Liang said the new design will allow the Chang'e-3 to take advantage of more launch windows in comparison to the Chang'e-2.

A launch window is a specific period of time when a spacecraft or rocket can be launched on a particular mission. The Chang'e-3 will be able to take advantage of two daily launch windows for three to four consecutive days, Liang said.

The new model also features combined guidance technology and real-time video feeds that allow for monitoring of the rocket's key operations, Liang said.

The Chang'e-3 is scheduled to be launched in the latter half of the year.
 

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It seems LM-5 first flight has been delayed.

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China's indigenous carrier rocket Long March-7 will hopefully make its first launch in 2014, a senior official of the rocket's designing institute said on Friday.

Liang Xiaohong, Party chief of the China Academy of Launch Vehicle Technology, made the remarks during an exclusive interview with Xinhua.

Researchers of the rocket have made key technological breakthroughs, including in the design and production of a staged combustion cycle liquid oxygen and kerosene engine, which can produce a thrust of 180 kilonewtons, he said.

For the carrier rocket Long March-5, which will hopefully make its debut launch within three years,
researchers have grasped key technologies for production and testing of most of the rocket structure's parts, including its 5.2-meter-diameter cowl and five-meter-diameter compartment.

They are striving for breakthroughs in technologies associated with the five-meter-diameter cryogenic propellant tank that stores liquid hydrogen fuels for the Long March-5, according to Liang.

Both the Long March-7 and the Long March-5 are expected to rank among the backbone carrier rockets for China's future space missions.
 
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