The North American X-10 was an unmanned aerodynamic and systems testbed for the SM-64 Navaho cruise missile. Its 1953-1959 flight program evaluated high-speed flight characteristics and guidance, navigation, and control systems, reaching approximately Mach 2 and validating the Navaho cruise component before the missile program was canceled as ballistic-missile technology matured.
Future launches and major activity directly linked to this vehicle family.