<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          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: 日本高清久久一区二区三区| 女同精品女同系列在线观看| 97久久久亚洲综合久久| 亚洲色大成网站www永久男同| 人妻在线无码一区二区三区| 国产精品无码av天天爽播放器 | 天天做日日做天天添天天欢公交车 | 国产成人你懂的在线观看| 久久人人爽人人爽人人av| 无码三级中文字幕在线观看| 国色天香成人一区二区| 精品尤物国产尤物在线看| 国产无遮挡性视频免费看| 免费午夜无码片在线观看影院| 亚洲性日韩精品一区二区 | 最新国产麻豆aⅴ精品无| 日韩美女一区二区三区视频| 少妇人妻偷人精品免费| 高清国产一区二区无遮挡| 在线天堂最新版资源| 国产av仑乱内谢| 免费区欧美一级猛片| 国产在线线精品宅男网址| 婷婷四虎东京热无码群交双飞视频| 国产女人高潮叫床视频| 狠狠亚洲色一日本高清色| 亚州av第二区国产精品| 人人妻人人狠人人爽天天综合网 | 久久精品中文字幕少妇| 国产综合色精品一区二区三区 | 国产内射性高湖| 中文无码人妻有码人妻中文字幕| 亚洲综合色婷婷中文字幕| 午夜精品福利亚洲国产| 国产精品无码素人福利不卡| 白嫩少妇激情无码| 蜜臀av在线无码国产| 日日橹狠狠爱欧美视频| 亚洲精品乱码久久久久久自慰| 日本高清一区免费中文视频| 亚洲AV永久久久久久久浪潮|