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US 5,397,217 AGranted
Pulse-cooled gas turbine engine assembly
AssigneeGeneral Electric Company
InventorsThomas E. DeMarche, Mario E. Abreu
Life of this patent
Estimating the term…
Abstract
A pulse-cooled gas turbine engine assembly includes a hollow airfoil and a fluidic oscillator joined thereto. The fluidic oscillator discharges pressurized cooling air inside the airfoil at a predetermined pulsation frequency for cooling the airfoil.
Claims8
A pulse-cooled gas turbine engine assembly comprising:
- two hollow parts each having:
- an internal flow channel;
- an inlet for receiving pressurized cooling air for flow through said flow channel;
- and
- a plurality of outlets extending through said part in flow communication with said flow channel for discharging said cooling air therefrom, each of said part outlets being sized for providing a predetermined pressure drop thereacross;
- and a fluidic oscillator having:
- an inlet for first receiving said cooling air;
- and
- first and second outlets joined in flow communication with respective flow channel inlets of said two hollow parts for intermittently discharging thereto said cooling air for cooling said parts;
- and
- said fluidic oscillator being sized and configured for alternately channeling said cooling air to said two parts at a predetermined pulsation frequency of said cooling air selected to prevent bleed-down of pressure of said cooling air in said flow channels of said parts below a predetermined backflow margin.
8 more elements
A pulse-cooled gas turbine engine assembly comprising:
- a hollow part having:
- two internal flow channels and respective inlets for receiving pressurized cooling air for flow therethrough;
- and
- a plurality of outlets extending through said part in flow communication with said flow channels for discharging cooling air therefrom, each of said part outlets being sized for providing a predetermined pressure drop thereacross;
- and a fluidic oscillator having:
- an inlet for first receiving said cooling air;
- and
- first and second outlets joined in flow communication with respective ones of said two flow channels;
- and
- said fluidic oscillator being sized and configured for alternately channeling said cooling air to said two flow channels at a predetermined pulsation frequency of said cooling air selected to prevent bleed-down of said cooling air in said flow channels below a predetermined backflow margin.
7 more elements
Dependencies are inferred from the claim text.