The last to pictures show the "Bodeneffektfahrzeug" Rhein-Flugzeugbau RFB-114 (X-114). It was constructed in the 1970's for the german Ministry of Defense, based on a concept by Alexander Lippisch. First flight of the prototype was in April 1977. The X-114 had 6 seats and was powered by a 200 HP Lycoming engine. During the flight tests it shows a good and economic performance (endurance ca. 20 hrs, range 2.000 km, vmax 200 km/h). But the only prototype crashed during a test flight and the whole project was stopped.
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