2.
    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

    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.

    3.
    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

    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:FR2648864A1

    公开(公告)日:1990-12-28

    申请号:FR9007867

    申请日:1990-06-22

    Abstract: A method for enhancing the thermal response of the engine case and annular shroud during the transient response period following a step change in engine power provides for the temporary reduction or elimination of the flow of cooling air supplied to the engine case by the active clearance control system. An alternate method additionally substitutes a flow of relatively warm air to further increase the response of the case.

Patent Agency Ranking