May 15

This Day in History


First Allied jet flies

On May 15, 1941, the first test of an Allied aircraft using jet propulsion is made in Britain. The W-1 turbojet engine, which produced a powerful thrust of hot air, was devised by Frank Whittle, a … (more...)


"Defence" Rapid-Fire Gun Patented

On this day in 1718, London lawyer James Puckle patented the "Defence Gun." The first well-documented rapid-fire gun in the world, the Defence Gun is considered a precursor of the machine gun. … (more...)