ROTOR WITH FLATTENED EXIT PRESSURE PROFILE

    公开(公告)号:SG11201403867QA

    公开(公告)日:2014-09-26

    申请号:SG11201403867Q

    申请日:2013-01-11

    Abstract: A rotor blade comprises an airfoil extending radially from a root section to a tip section and axially from a leading edge to a trailing edge, the leading and trailing edges defining a curvature therebetween. The curvature determines a relative exit angle at a relative span height between the root section and the tip section, based on an incident flow velocity at the leading edge of the airfoil and a rotational velocity at the relative span height. In operation of the rotor blade, the relative exit angle determines a substantially flat exit pressure ratio profile for relative span heights from 75% to 95%, wherein the exit pressure ratio profile is constant within a tolerance of 10% of a maximum value of the exit pressure ratio profile.

    GAS TURBINE ENGINE AIRFOIL
    20.
    发明公开
    GAS TURBINE ENGINE AIRFOIL 审中-公开
    GASTURBINENMOTOR-TRAGFLÄCHE

    公开(公告)号:EP3108112A4

    公开(公告)日:2017-02-22

    申请号:EP15752432

    申请日:2015-02-17

    Abstract: A compressor airfoil of a turbine engine having a geared architecture includes pressure and suction sides that extend in a radial direction from a 0% span position to a 100% span position. The airfoil has a relationship between an axial leading edge position and span position that defines a curve with a negative slope from 90% span to 100% span. The negative slope corresponds to a forward leaning leading edge.

    Abstract translation: 具有齿轮结构的涡轮发动机的压缩机翼型包括压力面和吸力面,所述压力面和吸力面在从0%跨度位置到100%跨度位置的径向方向上延伸。 翼型在轴向前缘位置和跨度位置之间具有关系,其定义了具有从90%跨度到100%跨度的负斜率的曲线。 负斜率对应于向前倾斜的前沿。

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