grc-1979-c-01044Albert Johns (left) examines the setup of a Quiet Clean STOL Experimental Engine in the 9-by 15-Foot Low Speed Wind Tunnel in March 1979. Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/grc-1979-c-01044/Copy URL to clipboard> DownloadShareTagsWebMod GrandfatheredSize1553x1083px