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US 9,810,091 B2Granted
Smart active clearance control between a rotor blade and a shroud
AssigneeUnited Technologies Corporation
InventorsKevin Zacchera, Patrick D. Couture
Life of this patent
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Abstract
A method is provided for calibrating an active clearance control system for a plurality of turbine engines. During this method, a squeeze test is performed between a tip of a rotor blade and a shroud. Results of the squeeze test are applied to adjust a gap between the tip and the shroud. The performance of the squeeze test and the application of the results may be individually performed for each of the turbine engines.
Claims20
A method for calibrating an active clearance control system for a plurality of turbine engines, the method comprising:
- performing a squeeze test between a tip of a rotor blade and a shroud;
- and
- applying results of the squeeze test to adjust a gap between the tip and the shroud;
- wherein the performing of the squeeze test and the applying of the results is individually performed for each of the turbine engines.
1 more element
A turbine engine, comprising:
- a rotor blade extending to a tip;
- a shroud radially outboard of the tip;
- and
- an active clearance control system configured to
- perform a squeeze test between the tip and the shroud;
- and
- control clearance between the tip and the shroud based on results of the squeeze test;
- wherein the active clearance control system is operable for recalibration based on performance of another squeeze test.
5 more elements
A turbine engine, comprising:
- a rotor blade extending to a tip;
- a shroud radially outboard of the tip;
- and
- a system configured to actively control clearance between the tip and the shroud based on a control logic, the system further configured to recalibrate the control logic.
1 more element
Dependencies are inferred from the claim text.