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US 8,522,521 B2Granted
Combined air turbine starter, air-oil cooler, and fan
AssigneeHamilton Sundstrand Corporation
InventorGerald P. Dyer
Life of this patent
Estimating the term…
Abstract
An air turbine starter assembly includes a starter turbine housing having a turbine gas flow path and a fan gas flow path, and a shaft rotatable with respect to the starter turbine housing. A plurality of turbine blades are connected to the shaft. A plurality of fan blades are also connected to the shaft.
Claims20
An air turbine starter assembly comprising:
- a starter turbine housing having a turbine gas flow path and a fan gas flow path;
- a shaft rotatable with respect to the starter turbine housing;
- a plurality of turbine blades connected to the shaft and positioned in the turbine gas flow path;
- a plurality of fan blades connected to the shaft and positioned in the fan gas flow path, and
- a heat exchanger positioned in the fan gas flow path for cooling lubricating liquid flowing through the heat exchanger via air flowing through the fan gas flow path.
2 more elements
An air turbine starter assembly comprising:
- a starter turbine housing having a turbine gas flow path and a fan gas flow path;
- a shaft rotatable with respect to the starter turbine housing;
- and
- a combination fan and turbine wheel attached to the shaft, the combination fan and turbine wheel including:
- a plurality of fan blades connected to the shaft and extending substantially radially outward to a support ring;
- and
- a plurality of turbine blades extending substantially radially outward from the support ring;
- and
- a heat exchanger positioned in the fan gas flow path for cooling lubricating liquid flowing through the heat exchanger via air flowing through the fan gas flow path.
6 more elements
A method of operating a starter turbine for use on a gas turbine engine, the method comprising:
- flowing compressed gas through a turbine gas flow path over turbine blades attached to a shaft to rotate the shaft;
- blowing air through a fan gas flow path via fan blades attached to the shaft;
- and
- cooling lubricating liquid the air flowing through via a heat exchanger positioned in the fan gas flow path.
1 more element
Dependencies are inferred from the claim text.