level 8
维基上扒来的介绍:NASAhas used a number of Broncos for various research programs, including studies of low speed flight carried out with the third prototype in the 1970s, and studies on noise and wake turbulence.[49][50]One OV-10 remained in use at NASA's Langley base in 2009 with three additional aircraft obtained from the Department of State formerly used in drug eradication efforts.[51]
2022年02月19日 03点02分
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