NASA Quiet Short-Haul Research Aircraft (QSRA) used for short take-off and landing (STOL) research.
https://www.youtube.com/watch?v=k_eDutgh4IU
Previously:
https://www.homemadetools.net/forum/...255#post134813
https://www.homemadetools.net/forum/...6564#post83923
https://www.homemadetools.net/forum/...637#post102089
https://www.homemadetools.net/forum/...1977#post75522
