On display in the Research and Development Gallery at the National Museum of the U.S. Air Force. Dwarfing the SR-71, this exotic Valkyrie was intended to be a Mach 3 nuclear bomber. A sharp-edged splitter plate of the wedge-fronted intake reduced airflow to Mach 1.3, the design helping the XB-70 to surf on its shockwave. The wingtips folded downward on the AV-1 at 25 and 65 deg. at supersonic speeds to add to stability, also adding to lift. It had a retractable visor, delta canards and all-moving vertical stabilizers. Power was from six YJ93-GE-3 turbojets using JP-6 fuel.