https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/441382![DC-9 V/STOL Transport Model in the 40x80 Foot Wind Tunnel, Apr 28th, 1971. Original from NASA. Digitally enhanced by…](https://images.rawpixel.com/image_social_landscape/czNmcy1wcml2YXRlL3Jhd3BpeGVsX2ltYWdlcy93ZWJzaXRlX2NvbnRlbnQvbHIvcGQzNi01LWFjNzEtNDM4OF8xLmpwZw.jpg)
![DC-9 V/STOL Transport Model in the 40x80 Foot Wind Tunnel, Apr 28th, 1971. Original from NASA. Digitally enhanced by…](https://images.rawpixel.com/image_social_landscape/czNmcy1wcml2YXRlL3Jhd3BpeGVsX2ltYWdlcy93ZWJzaXRlX2NvbnRlbnQvbHIvcGQzNi01LWFjNzEtNDM4OF8xLmpwZw.jpg)
DC-9 V/STOL Transport Model in the 40x80 Foot Wind Tunnel, Apr 28th, 1971. Original from NASA. Digitally enhanced by rawpixel.
DC-9 V/STOL Transport Model in the 40x80 Foot Wind Tunnel, Apr 28th, 1971. Original from NASA. Digitally enhanced by rawpixel.
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