X-3, NASA history collection. Public domain image of NASA aircraft.

E-17348 This in-flight NACA High-Speed Flight Station photograph of the X-3 Stiletto illustrates the aircraft's long slender fuselage and the small wings. The X-3 Stiletto was a single-place jet-powered research aircraft manufactured by the Douglas Aircraft Company. The X-3's primary mission was to investigate the design features of an aircraft suitable for sustained supersonic speeds, which included the first use of titanium in major airframe components. It was delivered to the NACA High-Speed Flight Station in August of 1954 after some Douglas and Air Force evaluation testing. Early 1950's NASA Photo / NACA/NASA X-3 Project Description
NASA Identifier: 341291main_E-17348