The North American XB-70 Valkyrie was a “technical marvel” of the 1950s—a Mach 3, 70,000-foot nuclear bomber designed to ...

Boeing and Lockheed Martin have both developed concepts for hypersonic aircraft, but there are real engineering issues with producing aircraft that can fly up to Mach 5. Key Point to Remember: It ...

At the beginning of the year, Boeing revealed a concept design at an aerospace forum for a strike and reconaissance aircraft that could fly five times the speed of sound—a spiritual successor to the ...

Critics are sharpening their attack adjectives to dump on Tom Cruise and his "Nazi eye-patch movie." But "Valkyrie" is actually a pretty engrossing World War II thriller. It shines a light on one of ...