公开(公告)号：WO2017172000A2

公开(公告)日：2017-10-05

申请号：PCT/US2017/014916

申请日：2017-01-25

Applicant: SIKORSKY AIRCRAFT CORPORATION

Inventor： KOPANSKI, Krzyztof ,  GRIFFITHS, Daniel, A. ,  BREON, Joshua, A. ,  WONG, Jonathan, K. ,  ISABELLA, Benjamin ,  LAWSON, Michael, Skylar

IPC: B64C27/46

CPC classification number: B64C27/473 ,  B64C27/04 ,  B64C27/467

Abstract: A tail rotor blade for a helicopter includes a blade body defining a longitudinally extending spar cavity, a leading edge forward of the spar cavity, and a trailing edge aft of the spar cavity. Upper and lower airfoil surfaces extend from the leading edge to the trailing edge on opposite sides of the spar cavity. The upper and lower airfoil surfaces define between one another a constant airfoil segment and transition airfoil segments disposed longitudinally adjacent to the constant airfoil segment on inboard and outboard sides of the constant airfoil segment.

Abstract translation: 用于直升机的尾桨叶片包括限定纵向延伸的翼梁腔，翼梁腔前方的前缘和翼梁腔后缘的后缘的叶片主体。 上部和下部翼型表面从翼梁腔的相对侧上的前缘延伸到后缘。 上翼型面和下翼型面在彼此之间限定恒定翼型区段和在恒定翼型区段的内侧和外侧纵向邻近恒定翼型区段设置的过渡翼型区段。

公开(公告)号：WO2017172000A3

公开(公告)日：2017-10-05

申请号：PCT/US2017/014916

申请日：2017-01-25

Applicant: SIKORSKY AIRCRAFT CORPORATION

Inventor： KOPANSKI, Krzyztof ,  GRIFFITHS, Daniel, A. ,  BREON, Joshua, A. ,  WONG, Jonathan, K. ,  ISABELLA, Benjamin ,  LAWSON, Michael, Skylar

IPC: B64C27/46 ,  B64C27/467 ,  B64C27/473

Abstract: A tail rotor blade for a helicopter includes a blade body defining a longitudinally extending spar cavity, a leading edge forward of the spar cavity, and a trailing edge aft of the spar cavity. Upper and lower airfoil surfaces extend from the leading edge to the trailing edge on opposite sides of the spar cavity. The upper and lower airfoil surfaces define between one another a constant airfoil segment and transition airfoil segments disposed longitudinally adjacent to the constant airfoil segment on inboard and outboard sides of the constant airfoil segment.

公开(公告)号：WO2017172000A8

公开(公告)日：2017-10-05

申请号：PCT/US2017/014916

申请日：2017-01-25

Applicant: SIKORSKY AIRCRAFT CORPORATION

Inventor： KOPANSKI, Krzysztof ,  GRIFFITHS, Daniel, A. ,  BREON, Joshua, A. ,  WONG, Jonathan, K. ,  ISABELLA, Benjamin ,  LAWSON, Michael, Skylar

IPC: B64C27/46 ,  B64C27/467 ,  B64C27/473

Abstract: A tail rotor blade for a helicopter includes a blade body defining a longitudinally extending spar cavity, a leading edge forward of the spar cavity, and a trailing edge aft of the spar cavity. Upper and lower airfoil surfaces extend from the leading edge to the trailing edge on opposite sides of the spar cavity. The upper and lower airfoil surfaces define between one another a constant airfoil segment and transition airfoil segments disposed longitudinally adjacent to the constant airfoil segment on inboard and outboard sides of the constant airfoil segment.