This is the world's most powerful liquid rocket engine
According to the press service of Roscosmos, NPO «Energomash» assembled the second flight sample of the RD-171MV engine. The first sample was made in the summer of this year. RD-171MV — This is the world's most powerful liquid rocket engine, kerosene and oxygen are used as fuel components, the thrust is 800 tons. RD-171MV will be used in the first stage of the promising Russian medium-class launch vehicle Soyuz-5.
At present, the assembly of the third flight model RD-171MV is being completed. The next stages of the program will be interdepartmental testing and serial production of such engines to power the Soyuz-5 launch vehicle. It is assumed that the first stage of the rocket will require only one RD-171MV engine. The stage will be able to launch up to 17 tons of payload into low Earth orbit. «Soyuz-5» it is planned to be used for launches both from the Baikonur cosmodrome and from the floating cosmodrome «Sea Launch».