Rostec Develops New Rocket Engine for Ultrathin Voronezh Launch Vehicle

• April 9, 2026

Russian state corporation Rostec has initiated the development of a new liquid-propellant rocket engine aimed at advancing the capabilities of ultralight space launch vehicles. This project is being carried out by Rostec’s subsidiary, the United Engine Corporation (UEC).

The new engine, designated NK-3, is designed to produce a thrust of approximately 4.5 tons. It will serve as the primary propulsion system for the Voronezh rocket, an ultralight launch vehicle currently under development. Rostec positions this engine as a unique technological solution within the current Russian aerospace sector, emphasizing its distinctiveness compared to existing propulsion systems.

Innovation in Ultrathin Rocket Propulsion

The endeavor to develop the NK-3 engine is a strategic move to support the growing demand for efficient, lightweight space launch vehicles. As global interest in small satellite deployment continues to rise, ultralight launchers like Voronezh aim to provide cost-effective and flexible access to low Earth orbit.

By utilizing a liquid-propellant design, the NK-3 engine is expected to offer enhanced control and performance compared to solid-fuel alternatives. While detailed technical specifications and timelines remain undisclosed, the NK-3 project reflects Rostec’s commitment to strengthening Russia’s position in the competitive space industry.

Development efforts are concentrated on delivering a propulsion system that meets the rigorous requirements of ultralight rockets, balancing thrust capacity with weight and efficiency. The successful integration of the NK-3 engine into the Voronezh launch vehicle could set a new standard in the sector, potentially enabling new space missions that demand smaller payload capacities.

Overall, the NK-3 engine project underscores ongoing innovation in Russian aerospace engineering, targeting advanced propulsion solutions for emerging launch platforms. As the Voronezh rocket progresses, further details on performance and operational capabilities are anticipated to emerge, highlighting Rostec’s role in the future of space exploration and satellite deployment.

Rostec begins work on the NK-3 liquid rocket engine, designed to power the ultralight Voronezh launch vehicle with 4.5-ton thrust.