His inventions continued into the postwar era of jet aircraft, to produce the Northrop F-89 Scorpion all-weather interceptor, the Northrop YB-49 long-range bomber, the Northrop Snark intercontinental missile, and automatic celestial navigation systems. He produced a number of flying wings, including the Northrop N-1M, Northrop N-9M, and Northrop YB-35. His ideas regarding flying wing technology were years ahead of the computer and electronic advances of "fly-by-wire" stability systems which allow inherently unstable aircraft like the B-2 Spirit flying wing to be flown like a conventional aircraft.[8]