The X-13 was developed in the 1950s, at a time when aerospace research was perhaps at its most fervent. The Ryan X-13 ...

Originally flown in the late 1960s, the Harrier has undergone a series of improvements that have increased safety, range and lethality. The AV-8B is a key component of the Marine Corps’ “all ...

Though it never entered mass production, its successful test flights demonstrated the feasibility of VTOL and paved the way for future innovations like the Harrier jump jet and the F-35B.