免费日韩片_欧美成人精品一区二区男人小说_国产乱码一区二区三区四区_国产精品国产三级国产aⅴ入口_成人看的污污超级黄网站免费_欧美一级在线免费观看_成人午夜免费无码福利片_国产乱人伦偷精品视频色欲_aaa少妇高潮大片免费看_国产精品1234_亚洲精品国产suv一区88_中文字字幕在线中文无码_精品亚洲区_午夜九九九_国产av国片精品jk制服丝袜_色综合亚洲_亚洲成av人片无码bt种子下载_欧美色就色_精品少妇的一区二区三区四区_男人用嘴添女人下身免费视频

China on Monday launched a recoverable science experimental satellite into a preset orbit, atop a Long March 2 D carrier rocket from a newly-built launch tower at Jiuquan Satellite Launch Center in Northwest China's Gansu Province.

Space officials said the China-made satellite was launched at 3:20 p.m.. The officials said the satellite would remain in orbit for 18 days before returning to Earth.

Reports from Xi'an Satellite Monitor and Control Center say the satellite is orbiting as scheduled and its instruments are functioning normally.

It is the 18th recoverable satellite developed by China, and is technically much more advanced than the previous ones in terms of its performance.

The satellite is mainly for scientific research, land surveying, mapping and other scientific experiments, said space experts.

The data China gathered from the satellite will help promote the country's scientific and technological, economic and social development.

With a lift-off mass of 251 tons, the launch vehicle, 40.6 meters in length, was developed by the Shanghai Academy of Space Technology with China Aerospace Science and Technology Corp.

The launch is the 73rd by the country's Long March carrier rockets since 1970, and the 31st consecutive successful launch since October 1996.

Space experts said the success rate of Long March rockets was 91 percent.

Monday's launch came less than a month after China's first manned space flight on Oct. 15 and 16, and the Oct. 21 launch of an earth resources satellite developed in cooperation with Brazil and a smaller satellite.

Space experts said the number of launches in such short period is unprecedented in the country's history, indicating the country's progress in launch capability and development of launch vehicle and spacecraft.

Testing of world's first non-steel launch tower

Monday's successful launch of China's recoverable science experimental satellite shows the reliability of the world's first satellite testing and launch tower with a structure of cement reinforced by steel bars, space experts said.

The tower, 91 meters high, replaces the commonly-used steel structure. Located at Jiuquan Satellite Launch Center in Gansu Province, northwest China, the tower looks like a high-rise building and is used for assembling, testing and launching satellites and rockets, beside injecting propellants.

The building comprises of more than 40 testing workshops and closed rooms, providing all-weather pre-launch testing in convenient and comfortable conditions for engineers and technicians even it is windy, bitterly cold or very hot outside.

Compared with the popular steel-structured launch tower at home and abroad, the new tower is cost-effective.

Experts say the new launch tower represents the country's first versatile launch facility capable of testing and launching different models of satellites.

Previously, China had to build separate test, launch and control systems for different models of satellite.

Located near the launch pad for China's manned spacecraft flight, the new tower shares some of the ground facilities.

Close

Today's Top News		Top National News
+China launches science satellite ( 2003-11-03) +Premier: United all of Asia will win ( 2003-11-03) +Navy fleet visit heart of US forces in the Pacific ( 2003-11-02) +Flooding kills 66 in Indonesian resort ( 2003-11-03) +Future SARS details to come quickly ( 2003-11-03)		+China launches science satellite ( 2003-11-03) +Critics of RMB policy off target ( 2003-11-03) +China launches science satellite ( 2003-11-03) +China aims to cut coal mine death toll by 30 percent by 2007 ( 2003-11-03) +China develops world's first TD-SCDMA 3G mobile phone set ( 2003-11-03)