This aircraft – the world’s only remaining XB-70 – is now displayed in the Research & Development (R&D) Gallery.
North American
XB-70A Valkyrie
The XB-70 was conceived in the 1950s as a high-altitude bomber that could fly three times the speed of sound. Because of fund limitations, only two were built. This XB-70 made its initial flight on 21 September 1964 and achieved Mach 3 on 14 October 1965.