男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影

Full Text: China's Space Activities in 2011

Updated: 2011-12-29 13:07

(Xinhua)

  Comments() Print Mail Large Medium  Small 分享按鈕 0

III. Major Tasks for the Next Five Years

In the next five years, China will strengthen its basic capacities of the space industry, accelerate research on leading-edge technology, and continue to implement important space scientific and technological projects, including human spaceflight, lunar exploration, high-resolution Earth observation system, satellite navigation and positioning system, new-generation launch vehicles, and other priority projects in key fields. China will develop a comprehensive plan for construction of space infrastructure, promote its satellites and satellite applications industry, further conduct space science research, and push forward the comprehensive, coordinated and sustainable development of China's space industry.

1. Space Transportation System

China will build a stronger space transportation system, keep improving its launch vehicle series, and enhance their capabilities of entering space.

It will enhance the reliability and adaptability of launch vehicles in service, and develop new-generation launch vehicles and their upper stages, implement the first flight of the Long March-5, Long March-6 and Long March-7 launch vehicles. The Long March-5 will use non-toxic and pollution-free propellant, and will be capable of placing 25 tons of payload into the near-Earth orbit, or placing 14 tons of payload into the GEO orbit. The Long March-6 will be a new type of high-speed response launch vehicle, which will be capable of placing not less than 1 ton of payload into a sun-synchronous orbit at a height of 700 km. The Long March-7 will be capable of placing 5.5 tons of payload into a sun-synchronous orbit at a height of 700 km.

It will conduct special demonstrations and pre-research on key technologies for heavy-lift launch vehicles.

2. Man-made Earth Satellites

China will build a space infrastructure frame composed of Earth observation satellites, communications and broadcasting satellites, plus navigation and positioning satellites, and will develop a preliminary long-term, sustained and stable service capability. China will develop new types of scientific satellites and technological test satellites.

1) Earth observation satellites

China will improve its present meteorological, oceanic, and resource satellite series and its small satellites constellation for environmental and disaster monitoring and forecasting. It aims at developing and launching new-generation GEO meteorological satellites, stereo mapping satellites, radar satellites for environment and disaster monitoring, electromagnetic monitoring test satellites, and other new-type Earth observation satellites. It will work to make breakthroughs in key technologies for interferometric synthetic-aperture radar and gravitational field measurement satellites. It will initiate a high-resolution Earth observation system as an important scientific and technological project and establish on the whole a stable all-weather, 24-hour, multi-spectral, various-resolution Earth observation system.

2) Communications and broadcasting satellites

China will improve satellites for fixed communications services, television and radio service satellites and data relay satellites; develop satellites for mobile communication service; and develop a platform of higher capacity and higher power for new-generation GEO communications and broadcasting satellites.

3) Navigation and positioning satellites

Based on "three-step" development plan - from experimental system to regional system and then to global system, China will continue building its Beidou satellite navigation system, implementing a regional Beidou satellite navigation system before 2012, whose navigation and positioning, timing and short-message services will cover the Asia-Pacific region. China aims at completing the global Beidou satellite navigation system by 2020, comprising five GEO satellites and 30 non-GEO satellites.

4) Scientific satellites and technological test satellites

China will develop and launch a Hard X-ray Modulation Telescope satellite, Shijian-9 new technology test satellite, and returnable satellites. It will begin to implement projects of quantum science test satellite and dark matter probing satellite.

3. Human Spaceflight

China will push forward human spaceflight projects and make new technological breakthroughs, creating a foundation for future human spaceflight.

It will launch the Shenzhou-9 and Shenzhou-10 spaceships and achieve unmanned or manned rendezvous and docking with the in-orbit Tiangong-1 vehicle.

China will launch space laboratories, manned spaceship and space freighters; make breakthroughs in and master space station key technologies, including astronauts' medium-term stay, regenerative life support and propellant refueling; conduct space applications to a certain extent and make technological preparations for the construction of space stations.

China will conduct studies on the preliminary plan for a human lunar landing.

4. Deep-space Exploration

China carries out deep-space exploration in stages, with limited goals.

Based on the idea of "three steps" -- orbiting, landing and returning -- for continuing lunar probe projects, China will launch orbiters for lunar soft landing, roving and surveying to implement the second stage of lunar exploration. In the third stage, China will start to conduct sampling the moon's surface matters and get those samples back to Earth.

China will conduct special project demonstration in deep-space exploration, and push forward its exploration of planets, asteroids and the sun of the solar system.

主站蜘蛛池模板: 怀柔区| 芜湖市| 天门市| 汝阳县| 金门县| 陈巴尔虎旗| 福州市| 通道| 新沂市| 隆德县| 保山市| 焉耆| 漯河市| 交城县| 宜宾市| 马山县| 湖南省| 舞钢市| 海伦市| 辽阳县| 龙州县| 无棣县| 讷河市| 宁陕县| 崇州市| 新和县| 漳平市| 德保县| 齐河县| 周口市| 巩义市| 梁平县| 安达市| 宁晋县| 洛川县| 白城市| 外汇| 上饶县| 莫力| 通州市| 綦江县| 达州市| 赣州市| 西林县| 邵阳县| 琼结县| 诸城市| 昭平县| 盘锦市| 娄烦县| 汶川县| 抚远县| 祥云县| 栖霞市| 宁武县| 双鸭山市| 云和县| 会东县| 定襄县| 郎溪县| 五华县| 平安县| 静海县| 堆龙德庆县| 托克逊县| 鞍山市| 天水市| 大城县| 渭南市| 青岛市| 泸西县| 徐闻县| 昌乐县| 华坪县| 基隆市| 宽甸| 长泰县| 南开区| 阿拉善左旗| 吉首市| 双城市| 龙门县|