なぜ？ 半世紀以上前の旅客機「DC-8」、米都市上空で低空飛行繰り返す… 超貴重機の珍任務とは
【写真】ビルスレスレ！ 貴重機「DC-8」の圧巻の低空飛行
NASA 817, their DC-8-70 flying laboratory, is operating around NW IN, Chicago, NE IL & SE WI today. Flying around 1300 feet & 250 mph, the mission is sampling emissions at lower altitudes in the urban & marine interface. More at https://t.co/vhbRxCcLib pic.twitter.com/DJFoByDaJT
— Kris Habermehl (@KrisHabermehl) August 1, 2023
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