• 
    

    
    

      99热精品在线国产_美女午夜性视频免费_国产精品国产高清国产av_av欧美777_自拍偷自拍亚洲精品老妇_亚洲熟女精品中文字幕_www日本黄色视频网_国产精品野战在线观看 ?

      NASA"s Mars Landing Experiment Success

      2014-08-30 17:00:55
      科技傳播 2014年15期
      關(guān)鍵詞:降落傘

      A flying saucer-shaped vehicle was sent high into the atmosphere via a balloon to trial a new type of parachute(降落傘) and an inflatable Kevlar ring that could help slow down a spacecraft as it approaches the Red Planet's surface.

      All of the equipment appeared to work apart from the parachute, which failed to deploy fully.

      The experiment was sent up from Hawaii.

      Nasa hopes the lessons learned will enable it put heavier payloads on Mars in the decades ahead.

      The current limit is about one-and-a-half tonnes.

      If humans are ever to go to the planet, this mass capability will have to rise to well beyond 10 tonnes.

      Saturday's test vehicle, known as the Low Density Supersonic Decelerator (LDSD), ditched in the Pacific after its flight.

      Teams were despatched to try to locate the demonstrator so that its data recorder could be recovered.

      This will give engineers the most detailed information on what precisely happened during the experiment.

      Video cameras on the ground and on the LDSD captured most of the flight.

      猜你喜歡
      降落傘
      雨 點(diǎn)
      降落傘(翻繩)
      螞蟻的降落傘
      降落傘總動(dòng)員
      做個(gè)降落傘玩玩
      青蛙跳
      孩子(2019年5期)2019-05-20 02:52:44
      降落傘
      跟蹤導(dǎo)練(三)
      降落傘
      降落傘
      萨迦县| 大关县| 怀仁县| 海伦市| 潞西市| 渑池县| 松溪县| 长宁县| 固镇县| 双桥区| 广德县| 纳雍县| 吴桥县| 星子县| 广南县| 南宫市| 宁海县| 嘉鱼县| 湖口县| 罗田县| 闽清县| 庄浪县| 北京市| 奇台县| 霸州市| 揭西县| 平遥县| 萍乡市| 招远市| 新乡市| 高平市| 旌德县| 虞城县| 浮山县| 承德市| 武邑县| 阿鲁科尔沁旗| 上饶市| 林甸县| 察隅县| 澄迈县|