Specialists from NPO Energomash (Khimki, part of Roscosmos) sent the RD-171MV rocket engine to the Progress Rocket and Space Center (Samara, part of Roscosmos) in accordance with contractual obligations. The engine was received on October 25, 2021, for assembly as part of the Soyuz-5 advanced rocket first stage.

‘This engine has already passed fire tests at the NPO Energomash research and testing complex, which confirmed the quality of design and technological solutions of our engineers. Now it will undergo another series of tests as part of the launch vehicle first stage. By producing this technologically complex engine, the company has once again confirmed the high professional level of the specialists in the production and testing departments’, commented Igor Arbuzov, NPO Energomash Director General.

The RD-171MV is the world's most powerful liquid-propellant rocket engine developed, produced and tested at NPO Energomash. The engine uses kerosene and oxygen as fuel components.

The promising two-stage medium-class Soyuz-5 launch vehicle is being developed to provide launches of unmanned spacecraft to solar-synchronous, highly elliptical, geo-transitional and geostationary orbits, including those using an upper stage, as well as launches of crewed transport vehicles.