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US 9,435,347 B2Granted
Turbopump, in particular for feeding rocket engines
AssigneeSnecma
InventorsFrancois Danguy, Laurent Fabbri, Sebastien Guingo
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Abstract
A turbopump for feeding a low-thrust rocket engine comprises a pump, a turbine, and a common rotary shaft connected to the pump and to the turbine. First and second bearings closer respectively to the pump and to the turbine serve to support the common shaft. The second bearing is a hydrodynamic bearing connected to a gas supply source, and the turbopump also includes at least one dynamic sealing gasket around the shaft and interposed between the first and second bearings.
Claims15
A turbopump, comprising:
- a propellant pump;
- a turbine;
- a common rotary shaft connected to said propellant pump and to said turbine;
- a first bearing and a second bearing, the first and second bearings supporting said common rotary shaft, said first bearing being closer than the second bearing to the propellant pump, and said second bearing being closer than the first bearing to the turbine;
- and
- at least one dynamic sealing gasket around the common rotary shaft interposed between said first and second bearings,
- wherein said second bearing is a hydrodynamic bearing connected to a gas supply source so that no seal is interposed between the second bearing and the turbine.
4 more elements
Dependencies are inferred from the claim text.