What You Need to Know: The North American XB-70 Valkyrie epitomized Cold War aerospace innovation. Designed to replace the B-52, the Valkyrie boasted speeds exceeding Mach 3 and an altitude ceiling of ...
What You Need to Know: The A-12 Avenger II, a stealth attack aircraft developed by General Dynamics and McDonnell Douglas, was intended to replace the A-6 Intruder in the U.S. Navy's fleet. Featuring ...