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    ACTIVE CLEARANCE CONTROL WITH CRUISE MODE
    2.
    发明专利
    ACTIVE CLEARANCE CONTROL WITH CRUISE MODE 未知

    公开(公告)号：GB2233399B

    公开(公告)日：1993-05-12

    申请号：GB9013589

    申请日：1990-06-18

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHWARZ FRED M ,  CRAWLEY JR CLIFTON J

    IPC: F01D11/24

    Abstract: Flow of cooling air to a thermal clearance control system in a gas turbine engine is selectably scheduled between a normal power level versus clearance schedule and an increased efficiency cruising schedule. Selection of the cruising schedule is accompanied by a limitation on the rate of engine power increase during the period when the cruise schedule is selected.

    4.
    发明专利
    未知

    公开(公告)号：FR2648865A1

    公开(公告)日：1990-12-28

    申请号：FR9007868

    申请日：1990-06-22

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHWARZ FRED M ,  CRAWLEY CLIFTON J JR

    IPC: F01D11/24

    Abstract: Flow of cooling air to a thermal clearance control system in a gas turbine engine is selectably scheduled between a normal power level versus clearance schedule and an increased efficiency cruising schedule. Selection of the cruising schedule is accompanied by a limitation on the rate of engine power increase during the period when the cruise schedule is selected.

    6.
    发明专利
    未知

    公开(公告)号：FR2648865B1

    公开(公告)日：1994-09-16

    申请号：FR9007868

    申请日：1990-06-22

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHWARZ FRED M ,  CRAWLEY CLIFTON J JR

    IPC: F01D11/24

    Abstract: Flow of cooling air to a thermal clearance control system in a gas turbine engine is selectably scheduled between a normal power level versus clearance schedule and an increased efficiency cruising schedule. Selection of the cruising schedule is accompanied by a limitation on the rate of engine power increase during the period when the cruise schedule is selected.

    Active clearance control with cruise mode
    7.
    发明专利
    Active clearance control with cruise mode 未知

    公开(公告)号：GB2233399A

    公开(公告)日：1991-01-09

    申请号：GB9013589

    申请日：1990-06-18

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHWARZ FRED M ,  CRAWLEY JR CLIFTON J

    IPC: F01D11/24

    Abstract: Flow of cooling air to a thermal clearance control system in a gas turbine engine is selectably scheduled between a normal power level versus clearance schedule 14 and an increased efficiency cruising schedule 26. Selection of the cruising schedule 26 is accompanied by a limitation on the rate of engine power increase during the period when the cruise schedule is selected. Selection and deselection of the cruising schedule 26 may be dependent upon engine speed or power demand setting, ambient air pressure or temperature, altitude, engine pressure ratio, operator input or the time since the last engine power level demand change.

    GEARED TURBINE ENGINE WITH RELATIVELY LIGHTWEIGHT PROPULSOR MODULE
    8.
    发明专利
    GEARED TURBINE ENGINE WITH RELATIVELY LIGHTWEIGHT PROPULSOR MODULE 未知

    公开(公告)号：CA2886359A1

    公开(公告)日：2014-04-17

    申请号：CA2886359

    申请日：2013-02-08

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHWARZ FRED M ,  SUCIU GABRIEL L

    IPC: F02C7/00 ,  F02C7/20 ,  F02C7/32

    Abstract: An example gas turbine engine includes a propulsor assembly including at least a fan module and a fan drive turbine module; a gas generator assembly including at least a compressor section, a combustor in fluid communication with the compressor section, and a turbine in fluid communication with the combustor; and a geared architecture driven by the fan drive turbine module for rotating a fan of the fan module. A weight of the fan module and the fan drive turbine module is less than about 40% of a total weight of a gas turbine engine.

    Thermal clearance control method for gas turbine engine
    9.
    发明专利
    Thermal clearance control method for gas turbine engine 未知

    公开(公告)号：GB2233398A

    公开(公告)日：1991-01-09

    申请号：GB9013588

    申请日：1990-06-18

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SCHWARZ FRED M ,  CRAWLEY JR CLIFTON J

    IPC: F01D11/24

    Abstract: Clearance between blade tips and an annular shroud is controlled by enhancing the thermal response of the engine case and annular shroud during the transient response period following a step change in engine power. A temporary reduction or elimination of the flow of cooling air supplied to the engine case by the active clearance control system ensures that the radius rs of the case follows curve 34 instead of curve 32 leading to an increased minimum clearance delta min. Substituting a flow of relatively warm air for the cooling air leads to a further increase in the response of the case (curve 36) and a further increase in delta min.

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