公开(公告)号：EP3077283A1

公开(公告)日：2016-10-12

申请号：EP14867254.6

申请日：2014-11-24

申请人： Sikorsky Aircraft Corporation

发明人： MOFFITT, Blake Almy ,  TILLMAN, Thomas G. ,  WAKE, Brian E. ,  MIN, Byung-Young ,  MATALANIS, Claude G.

IPC分类号： B64C11/18

CPC分类号： B64C27/82 ,  B64C11/18 ,  B64C2027/8236 ,  F01D5/14

摘要： A boundary layer ingesting (BLI) blade having a span is provided and includes a root section connectable to a hub, a tip section disposable at a distance from the hub and having a pitch and a body extending in a spanwise dimension from the root section to the tip section. The root section has a local pitch from the root section to about a 70% span location, which is less than the pitch at the tip section, to thereby reduce local angles of attack in a boundary layer region defined in and around the root section.

摘要翻译： 提供了具有跨度的边界层摄取（BLI）叶片，并且包括可连接到轮毂的根部部分，可离开所述轮毂一定距离并且具有间距的尖端部分和从根部段沿翼展方向延伸的主体， 尖端部分。 根部具有从根部至大约70％跨度位置的局部间距，该间距小于尖端部处的间距，从而减小在根部中和其周围限定的边界层区域中的局部迎角。

公开(公告)号：EP3077283B1

公开(公告)日：2018-11-14

申请号：EP14867254.6

申请日：2014-11-24

申请人： Sikorsky Aircraft Corporation

发明人： MOFFITT, Blake Almy ,  TILLMAN, Thomas G. ,  WAKE, Brian E. ,  MIN, Byung-Young ,  MATALANIS, Claude G.

IPC分类号： B64C11/18 ,  B64C27/82

CPC分类号： B64C27/82 ,  B64C11/18 ,  B64C2027/8236 ,  F01D5/14

摘要： A boundary layer ingesting (BLI) blade having a span is provided and includes a root section connectable to a hub, a tip section disposable at a distance from the hub and having a pitch and a body extending in a spanwise dimension from the root section to the tip section. The root section has a local pitch from the root section to about a 70% span location, which is less than the pitch at the tip section, to thereby reduce local angles of attack in a boundary layer region defined in and around the root section.