亚洲一级美女视频,最新国产一级特黄Av,最新精品国偷自产在线观看,亚洲电影小视频三

    <cite id="xgsqj"><listing id="xgsqj"></listing></cite>
  1. China designs spacecraft to extend lifespan of satellites

    Source: Xinhua| 2018-08-13 11:26:48|Editor: Liangyu
    Video PlayerClose

    BEIJING, Aug. 13 (Xinhua) -- Chinese scientists are designing a new type of spacecraft that can move a de-orbiting satellite back into its intended orbit, thus extending its period of service, according to the China Daily Monday.

    Engineers from the China Academy of Space Technology are conducting research and development on the proposed spacecraft, which would help bring satellites that have run short on fuel or experienced technical problems back to their designed trajectories.

    The new spacecraft is engineered to connect to a target satellite via robotic arms and then provide attitude control assistance and push the satellite back into its proper orbit.

    Once it finishes a life-extension task with a satellite, the service spacecraft will undock with the target and autonomously fly toward the next satellite that requires assistance.

    The spacecraft's R&D will take about two years to complete. Once the vehicle enters service, it is expected to bring at least 10 years of extra operational time to multiple satellites, the newspaper cited the academy as saying.

    The vehicle will enjoy great commercial potential in the satellite industry, said Hu Di, chief designer of the spacecraft.

    TOP STORIES
    EDITOR’S CHOICE
    MOST VIEWED
    EXPLORE XINHUANET
    010020070750000000000000011100001373866301