Project  The first wind tunnel tests were conducted at Marignagne in 1974 with a 1/5-scale model. Test were conducted with a full-scale tilt-rotor system at the Office National d’Etudes et de Recherches Aérospatiales (ONERA) S1 subsonic wind tunnel in Modane-Avrieux during June/July 1975 and June/July 1976. The conversion between hover and forward flight was the primary focus of the tests. In April 1977, the first flight was envisioned for 1981, but the program was soon cancelled.  |
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