The X-15 was an experimental Air Force rocket plane for the edge of space
In October 1967, test pilot and soon-to-be astronaut William J. Knight was flying at an altitude of more than 102,000 feet when he accelerated his aircraft to Mach 6.7. That…
The experimental rifle that almost changed World War II
In 1928, the Army asked itself how it could make its rifles, and therefore its riflemen, more lethal in case all those building tensions in Europe and Asia eventually boiled over and triggered a new world war. After years of study and design, they c…