FIELD: rocketry; liquid-propellant engines working on cryogenic oxidizer and on hydrocarbon fuel.
SUBSTANCE: proposed turbo-pump unit of liquid-propellant engine includes the following rotor parts mounted on shaft provided with at least two supports: oxidizer pump impeller, fuel pump impeller and turbine wheel which are arranged in turbo-pump unit housing; besides that, turbo-pump unit is provided with additional oxidizer pump impeller with shaft and additional fuel pump impeller with shaft; all supports are magnetic; magnetic clutch and step-up gear are mounted between turbine wheel and oxidizer pump impeller. Magnetic clutch and step-up gear are mounted between oxidizer pump and fuel pump. Magnetic clutch and step-up gear are also mounted between main and additional fuel pumps.
EFFECT: enhanced fire and explosion safety of turbo-pump unit.
3 cl, 3 dwg
