NASA dress rehearsal for hypersonic X-43A

NASA conducted a captive-carry "dress rehearsal" of the planned Mach 10 flight of its X-43A hypersonic research aircraft on 27 September. The third and final flight of the unmanned, scramjet-powered X-43A is tentatively scheduled for early November. The first flight failed when the booster disintegrated after release from NASA's Boeing B-52, but the second X-43A set a speed record of Mach 6.83 on its March flight.

Source: Flight International