There he also met Hermann Pohlmann, who would go on to design the famous Ju 87 Stuka or dive-bomber before eventually becoming Amtmann's superior in another company.
He would remain there, working on Vogt's great range of unconventional and ingenious ideas, throughout its official renaming as a subsidiary of Blohm & Voss shipbuilders, until it was shut down at the end of World War II in 1945.
Due to the workload on Vogt, Amtmann's old colleague Pohlmann would later also join B&V as Deputy Chief Designer, so becoming his immediate superior.
[4] Amtmann was subsequently appointed project engineer for the proposed Blohm & Voss BV 237 stuka or dive-bomber attack aircraft, which had been personally approved by Hitler, but the order was obstructed by others and the work delayed until the war ended.
[5] He also took over and led the design of the P 200 transatlantic passenger flying boat project for Deutsche Luft Hansa, with the intention of building it when the war was over.
[7] Amtmann developed a patent control system for the pilot and the bed was test flown in a Boeing B-17 Flying Fortress bomber and later in a Lockheed F-80E Shooting Star jet fighter.
By a coincidence his erstwhile Chief, Richard Vogt, was also at Wright Field and came up with the same idea, beating Amtmann to the patent office.
Amtmann left US Government employment in 1951, to work for Consolidated Vultee in San Diego, California, in his old role of preliminary design.
Made redundant in 1961, he joined General Atomic and worked on the Orion space propulsion system, which proposed using a controlled sequence of nuclear explosions to propel the spacecraft.