United Engine Corporation (UEC), part of Rostec, presented its latest developments in propulsion systems for light helicopters, hybrid aircraft, and drones of various categories at the 2025 Dubai Airshow.
Among the highlights is the VK-650V engine, a fully Russian powerplant designed to meet the growing market for 2–4 ton class helicopters.
The VK-650V received type certification in Russia in December 2024 and has already begun integrated flight tests on the Ansat helicopter, in its version with replaced imported components. In September, the engine successfully powered the multipurpose helicopter from Russian Helicopters, marking a significant advancement in the country’s technological independence in the aviation sector.
According to UEC CEO Alexander Grachev, the new engine is expected to become one of the most important projects in light aviation:
“VK-650V engines are in high demand in the most populous segment of the market. The VK-650V was developed in a short time, is ready for mass production, and has already demonstrated reliable operation on the Ansat. I am confident it will replace foreign analogs in all helicopters for which it is intended, and it is also applicable to promising helicopters and UAVs, including foreign ones.”
The engine stands out for low fuel consumption, high durability of main components, and an advanced digital automatic control system. It delivers 650 hp in takeoff mode and can reach 750 hp in emergency mode.
Hybrid systems and new engines for drones
Based on the VK-650V technological base, UEC specialists also developed a 500 kW hybrid power unit (HPU) combining a gas turbine and electric motors. The system is intended for transport drones, air taxis, and vertical takeoff and landing (VTOL) or ultra-short runway aircraft.
Another highlight is the 400 kW turbine generator, designed to equip next-generation hybrid aircraft.
For the first time, UEC also presented small turbojet engines in Dubai, with power ranging from 40 to 150 kgf, as well as the RH50 turbogenerator. These engines are characterized by high fuel efficiency, simple lubrication systems, and low weight, making them ideal for UAVs of various designs.
The RH50 runs on kerosene and converts turbine combustion energy into electricity via a coupled generator. It is already used in Russian drones of different sizes and configurations.
Source and images: Rostec. This content was created with the help of AI and reviewed by the editorial team.
