INLET PRE-SWIRL GAS TURBINE ENGINE

The invention discloses a gas turbine engine which includes a turbomachine and a fan rotatable by the turbomachine. The fan includes a plurality of fan blades. The gas turbine engine also includes anouter nacelle surrounding the plurality of fan blades and including an inner wall, the inner wall of the outer nacelle including a plurality of pre-swirl contours positioned forward of the fan bladesof the fan along an axial direction and extending inwardly along a radial direction. 本申请公开了燃气涡轮发动机，其包括涡轮机和可由涡轮机旋转的风扇。风扇包括多个风扇叶片。所述燃气涡轮发动机还包括外部机舱，该外部机舱围绕所述多个风扇叶片并且包括内壁，外部机舱的内壁包括多个预旋流轮廓，所述多个预旋流轮廓沿轴向方向定位在风扇的风扇叶片的前方并且沿着径向方向向内延伸。