The hard-working, multi-role Piasecki H-21 helicopter, known as the "Flying Banana," was the brainchild of Frank Piasecki, who founded the P-V Engineering Forum alongside his college buddy, Harold ...

Fifty years after its first flight, the AH-64 Apache remains the go-to attack helicopter for militaries around the world The Apache entered U.S. Army service in the mid-1980s as a wrecking ball. It ...