The Northrop N-9M was an approximately one-third scale, 60-foot (18 m) span all-wing aircraft used for the development of the full size, 172-foot (52 m) wingspan Northrop XB-35 and YB-35 flying wing long-range, heavy bomber. The XB-35 program was canceled in 1949, but the knowledge gained about all-wing aircraft was put to use decades later in the Northrop Grumman B-2 Spirit bomber.
Sadly, this aircraft and its pilot were lost in a crash on 22 April 2019.