English 版 (精华区)
发信人: murjun (萧牧), 信区: English
标 题: 未来14个月中国将把11颗卫星送入轨道(EN)(转载)
发信站: 哈工大紫丁香 (2003年11月15日19:49:56 星期六), 站内信件
【 以下文字转载自 Aero 讨论区 】
【 原文由 murjun 所发表 】
Record number of satellites to lift off
( 2003-11-14 22:22) (Xinhua)
China is expected to send up to 11 satellites into orbit over the next 14 mont
hs, before it stages its second manned space mission in 2005, a top aerospace
official told China Daily on Friday.
Zhang Qingwei, president of China Aerospace Science and Technology Corp, said
that within a couple of days, the country will send a communications satellite
into space, followed by a geospace exploration satellite in December.
The planned lift-offs, together with two others staged since China's first man
ned spaceflight on October 15, will bring the number of space launches in a mo
nth to a record high, Zhang said.
"The active space programme reflects our experience and expertise, especially
our confidence in the quality and reliability of Chinese launch vehicles and s
pacecraft,'' said Zhang, whose company is the major manufacturer of China's fo
ur unmanned and one manned spacecraft and carrier rockets.
Zhang said he is upbeat about the upcoming launch scheduled for a few days' ti
me.
Already the Long March 3A rocket, which will send the communications satellite
into orbit, has been used in seven launch missions, all successfully, he said
.
The communications satellite will lift off from the Xichang Satellite Launch C
entre in Southwest China's Sichuan Province, Zhang said.
The launch will be the 74th by the country's Long March carrier rockets since
1970, and the 32nd consecutive successful launch since October 1996, he said.
Zhang, who is also deputy chief commander of the country's manned space progra
mme, said on Friday China will not conduct spaceflights in 2004.
He did not say why, but confirmed that a second manned mission is scheduled fo
r 2005.
China's first manned spacecraft -- Shenzhou-V -- carried one astronaut into sp
ace and returned to Earth safely after circling the planet 14 times on a 21-ho
ur mission. But Shenzhou-VI will spend five to seven days in space with more t
han one person aboard, Zhang said.
Wang Liheng, director of the Science and Technology Commission under Zhang's c
ompany, said the number of astronauts to be sent into space on the second mann
ed flight would be decided after experts completed analysis of the data collec
ted from Shenzhou-V.
After drastically improving the quality of satellites and reliability of their
launch vehicles over the past three decades, Chinese scientists have been abl
e to substantially shorten the time interval between two launches, Zhang revea
led.
In the past, when a satellite and a rocket were transported to a launch centre
, it used to take ground scientists up to two months to test the rocket and er
ect the assembled parts on the launching pad to be checked again.
Testing time reduced
The testing system is so improved scientists can dispense with the ground chec
ks and test a carrier rocket and its payload on the launching pad, Zhang said.
"This has reduced the testing time to 20 to 30 days, meaning that we can condu
ct a launch mission every 20-something days,'' he said.
The turnaround time between two launches is one of the fastest in the world, Z
hang claimed.
It will give the Chinese commercial launch service provider an edge in vying f
or customers, as some clients are sensitive about the time interval between la
unches, he said.
More importantly, the increased efficiency of satellite launch centres will al
low China to send more satellites into orbit over a given time -- at a lower c
ost -- to cater to national economic development, Zhang said.
He said China plans to develop at least 30 satellites by the end of 2005.
As demand for satellites in the country soars, China is projected to launch ar
ound 10 satellites a year during the 2006-2010 period, compared with an annual
average of five launches between 2001 and 2005, he said.
"To serve national economic growth, defence and scientific research purposes,
the country will send up to nine satellites into space next year alone,'' Zhan
g said.
The satellites in the pipeline include APSTAR VI, made by the French-based Alc
atel Space for APT Satellite Co Ltd in Hong Kong. It is China's first foreign-
made satellite employing technology to prevent sabotage, according to Liu Zhix
iong, vice-president of the China Great Wall Industry Corp, China's sole launc
h provider.
--
我非常喜欢在有风有雨的季节计划自己;
有风有雨后的季节晒着阳光我昏昏睡去;
睡去的我依然在甜梦中将曾有过的温习;
温习昨天前天等等的种种激情与过去。
Jim Mural
※ 来源:·哈工大紫丁香 bbs.hit.edu.cn·[FROM: 218.9.106.147]
--
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