Originally Wiener-Neustadter Flughafen Betriebs GmbH, after the Anschluss of 1938 was amalgamated with Hirtenberg, whose manufacturing department it absorbed under the name Wiener-Neustadter Flugzeugwerk GmbH. Light two-seat biplane in production 1937, later undertook subcontracts on Bf 109. In 1943-1944 built the world's first tip-jet helicopter, designed by team under Friedrich von Doblhoff. Four built and tested. Conventional piston-engine provided compressed air which, mixed with fuel, was fed to tip-mounted combustion chambers through rotor blades. System adopted by other designers.

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