This is the story of the world's first attempt at perfecting a true, tail-sitting vertical take off and landing (VTOL) interceptor flying machine - Focke-Wulf Flugzeugbau's proposed "Triebfl gelj ger" or thrust wing fighter project of 1944. The Triebfl gelj ger was not intended to be an air-superiority dogfighter, but a bomber killer rising straight up from its hiding place in the forest or urban area to meet and attack Allied bombers head on. With...