The XB-70 Valkyrie was an aircraft ahead of its time that challenged the known concepts of the flight envelope. Originally printed by NASA and the Air Force, th

The XB-70 Valkyrie was an aircraft ahead of its time. Equipped with drooping wingtips, and designed with one of the highest lift-to-drag ratios in aviation hist

Of the many futuristic military aircraft concepts created in the 1950s the North American XB-70 still stands out as the most awe-inspiring. With its huge, white

From the most important leaders and the most courageous victories to the earliest machines of flight and the most advanced Stealth technology, Walter J. Boyne's