Ascendance highlighted the potential of hybrid-electric propulsion for a new generation of defense-focused unmanned aerial vehicles (UAVs), emphasizing how energy management is becoming a critical factor in future military operations.
The company stated that since 2023 it has been developing STERNA, a hybrid-electric propulsion system designed to provide advanced capabilities to UAV platforms, including extended endurance, reduced acoustic and thermal signatures, and greater operational flexibility.
According to Ascendance, these capabilities could allow unmanned aircraft to remain on mission longer, operate more discreetly, and reduce logistical requirements—features that are increasingly important in contested environments.
The company also noted that hybrid-electric propulsion may help lower operating costs while improving mission resilience, expanding the range of potential applications for defense UAVs.
Ascendance plans to continue discussions with industry stakeholders, armed forces, and partners during Eurosatory 2026, one of the world's leading defense and security exhibitions.
While the adoption of hybrid-electric systems in defense remains at an early stage, growing interest in energy-efficient solutions reflects a broader trend toward aircraft with greater endurance and operational flexibility.
