Sikorsky Makes Strides in Hybrid-Electric Aircraft Technology Testing
Sikorsky Aircraft is making significant strides in its HEX (Hybrid-Electric Demonstrator) program. The company’s Power Systems Test Bed is currently undergoing ground testing, paving the way for planned flight demonstrations of its innovative hybrid-electric tiltwing vertical takeoff and landing aircraft.
The test bed, which first ran in December 2025, is equipped with two 600kW electric motors. These motors generate a combined 1.2MW of power. Sikorsky has plans to conduct hover and low-speed flight trials with this wire-frame demonstrator in 2026. Meanwhile, two additional aerodynamically complete composite versions are already being assembled for more advanced flight programs in 2027.
The HEX program signifies Sikorsky’s ambitious venture into hybrid-electric propulsion for large VTOL aircraft. The company is heavily investing in advanced manufacturing techniques, including additive manufacturing for dynamic components. Richard Benton, the general manager of Sikorsky, stated that hybrid-electric propulsion systems have the potential to increase conventional helicopter range by 30%. This could also lead to similar reductions in operating and maintenance costs. The technology is being developed for both commercial and military applications. The civil market could potentially be the launch customer for this revolutionary propulsion system in the 2030s.
Source: Aviation Week