7月21日的特大暴雨,使得北京市房山区磁家务变电站受到山洪的侵袭,变电站全站瘫痪,6000多户居民用电受到影响。周边交通瘫痪,救援困难。当晚11点,中国航天科工集团公司三院8357所接到北京市电力局的紧急电话,请求对磁家务变电站进行航拍作业,用于对受灾情况进行评估,以展开救援。灾情就是命令,位于天津的8357所当晚立即组织技术人员对无人机的飞行状态进行测试和确认, July 21, the torrential rain, making Beijing Fangshan District magnetic home substation was hit by torrents, substations totally paralyzed, more than 6,000 households affected by electricity. Surrounding traffic paralyzed, rescue difficulties. At 11 o’clock that night, China Aerospace Science and Industry Corporation Third Hospital 8357 received an emergency call from the Beijing Municipal Electric Power Bureau, requesting an aerial operation of the magnetic household substation for the purpose of assessing the disaster and launching rescue operations. The disaster is the order, located in Tianjin 8357 the same evening immediately organized technical staff to test and confirm the flight status of the UAV,