as a result , specialists from npo energo mash managed to create a motor that, in its technical capabilitiesket engines of a similar class. rd-191 is the successor to the oxygen-kerosene engines of the rd-170 family, created for the legendary buran energy space system. its height is 4 m, weight is 2200 kg, thrust is 212 ton. the big heart of the new rocket is being created in the design bureau chemical automation. the entire procedure is almost completely automated. on a rolling mill , a blank, a nozzle shell, and combustion chambers are produced from a sheet of metal, without stamping or welding. a blank from a sheet, using this sheeting mill. using double-spinning rollers, two double-spinning rollers, it is rolled out onto the frames that you see here, so from a sheet 12 mm thick, we get blanks 6 mm thick. this treatment allows you to avoid even minor deformations. the accuracy is absolute. besides, combustion chambers made in this way are lighter than those made using traditional technologies, which means the engine itself weighs less, this has a direct effect. for the cost of the entire