Inventors:
- Sacramento CA, US
Thaddeus Chilcoat - Moorpark CA, US
International Classification:
F01D 25/12
F01D 25/16
F01D 25/18
F02K 9/48
F04D 13/04
F04D 29/046
F04D 29/08
F04D 29/42
F04D 29/52
F04D 29/58
Abstract:
A turbopump machine includes a housing, a shaft rotatably supported in the housing on a set of bearings, an axial pump coupled with the shaft, a circumferential discharge volute fluidly coupled with the axial pump, and a turbine coupled with the shaft. The turbine includes a blade row disposed in an axial turbine flowpath that has an axial turbine flowpath discharge that is fluidly coupled with the circumferential discharge volute. A cooling passage is disposed between the housing and the shaft about the set of bearings. The cooling passage has a cooling passage discharge that is fluidly coupled with the circumferential discharge volute. The cooling passage discharge is adjacent the axial turbine flowpath discharge. A seal isolates the cooling passage discharge from the axial turbine flowpath discharge.