FIELD: engines and pumps.
SUBSTANCE: this turbopump unit comprises turbine, oxidiser pump and fuel pump with impellers. In compliance with this invention, this turbine represents a birotatory design with two impellers. The latter have no nozzle diaphragms and run in opposite directions, each being communicated with oxidiser pump impeller and fuel pump impeller. Turbopump unit can incorporated an extra fuel pump, impellers of extra fuel pump and fuel pump being fitted on one shaft.
EFFECT: decreased centrifugal loads at turbine rotor.
2 cl, 2 dwg
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