<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: 亚州毛色毛片免费观看| 精品久久久久久无码不卡 | 老色鬼在线精品视频| 亚洲精品区午夜亚洲精品区| 国产免费午夜福利在线播放| 日韩精品成人无码专区免费| 亚洲第一二三区日韩国产| 无码日韩av一区二区三区| 91亚洲免费视频| 久一在线视频| 亚洲18禁一区二区三区| 中文字幕国产精品二区| 欧美疯狂三p群体交乱视频| 国产精品户外野外| 久久久久99精品成人品| 久久久久国产一级毛片高清板| 国产成人午夜精品影院| 免费十八禁一区二区三区| 久久精品无码鲁网中文电影| 性人久久久久| 亚洲成片在线观看12345| 狠狠操夜夜爽| 日本无产久久99精品久久| 日韩国产成人精品视频| 国产亚洲精品第一综合另类灬 | 国产 亚洲 制服 无码 中文| 国产成人精品无码专区| 国产尤物av尤物在线观看| 人妻少妇久久久久久97人妻| 亚洲精国产一区二区三区| 最新国内精品自在自线视频| 国产精品午夜性视频| 亚洲国产综合一区二区精品| 色综合国产一区二区三区| 孕妇特级毛片ww无码内射| 国产中文字幕精品在线| 天天爽天天摸天天碰| 激情国产一区二区三区四区| 精品国产一区二区在线视| 真实国产老熟女无套中出| 国产精品中文字幕久久|