Robert Esnault-Pelterie (1881 -1957) was a pioneer in aircraft design and development, rocketry, and aero-engine construction. Especially noted for tractor monoplanes and metal-tube construction. Following construction of Wright type gliders (1904), he tested REP 1 (1907) and REP 2 (1908) powered by his own engines. Founded in 1908 Association des Industriels de la Locomotion Aerienne and merged with Chambre Syndicale des Industries Aeronautiques. Developed central-float seaplane. Vickers in England acquired license for REP monoplanes in 1911. A few French-built REP monoplanes (including parasol type) used in First World War. After the Armistice, Esnault-Pelterie, something of a visionary, increasingly concerned himself with the problems of spaceflight.