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Ascendance and Delair are collaborating to develop the DT46 Hybrid observation drone, integrating Delair's DT46 model with Ascendance's hybrid propulsion technology, STERNA. This initiative, funded by the Defense Innovation Agency, addresses the modernization of the DGA Missile Testing Center's capabilities.

The drone can operate over 5.5 hours in VTOL mode, switch between hover and airborne modes, and alternate between thermal and electric modes for various missions. Flight tests have begun in Toulouse, with qualifying flights planned in Biscarrosse, France, in spring 2025. The project aims to provide economic and environmental benefits while enhancing long-distance mission capabilities.