SR-71During the 1990s two SR-71 Blackbird aircraft were used by NASA as testbeds for high-speed and high-altitude aeronautical research at Dryden. The aircraft included an SR-71A and SR-71B (the trainer version), loaned to NASA by the U.S. Air Force.Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/sr-71-3/Copy URL to clipboard> DownloadShareSize1041x781px