论文部分内容阅读
美国政府的一项调查断定,一枚价值不到10美分的螺钉使一颗耗资7700万美元的气象卫星在发射后两周内成为一堆废铁。美国国家海洋和大气管理局的NOAA-13卫星在1993年8月9日发射升空,执行采集有关云层及温度数据的使命。然而该卫星只工作了12天。调查人员断定,一枚30毫米长螺钉实际比标称长度超出了几毫米,引起短路。这枚将卫星电池充电器部件固定在散热器上的螺钉与太阳能电池板有着同样的
A U.S. government investigation concluded that a screw worth less than 10 cents made a $ 77 million meteorological satellite a pile of scrap iron within two weeks of launch. The NOAA-13 satellite of the National Oceanic and Atmospheric Administration of the United States was launched on August 9, 1993, carrying out the mission of collecting data on cloud and temperature. However, the satellite only worked for 12 days. Investigators concluded that a 30 mm long screw actually exceeded the nominal length by a few millimeters, causing a short circuit. The screw that secures the satellite battery charger unit to the heat sink has the same features as the solar panel