National Security Journal on MSN

The Mach 6.7 X-15 Rocket Plane Has A Message for the U.S. Air Force

America built the X-15 to get flight data in the unknown between airplanes and spacecraft. -The rocket-powered, Inconel-X research plane, air-dropped from a B-52 and driven by a throttleable XLR99, ...
National Security Journal on MSN

The U.S. Air Force’s Mach 2 B-58 Hustler Bomber ‘Mistake’ Still Stings

The B-58 Hustler was the world’s first operational Mach 2 bomber, built when the Air Force believed speed and altitude could ...