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    HELICOPTER WITH ANTI-TORQUE SYSTEM, RELATED KIT AND METHODS
    2.
    发明公开
    HELICOPTER WITH ANTI-TORQUE SYSTEM, RELATED KIT AND METHODS 审中-公开
    带有抗扭矩系统的直升机，相关试剂盒和方法

    公开(公告)号：EP3317180A2

    公开(公告)日：2018-05-09

    申请号：EP16825927.3

    申请日：2016-06-29

    申请人： BLR Aerospace, LLC

    发明人： CARPENTER, Michael ,  SMITH, Daniel, A.

    IPC分类号： B64C23/06

    CPC分类号： B64C27/82 ,  B64C7/00 ,  B64C23/06 ,  B64C2027/8263 ,  Y02T50/162

    摘要： A strake may extend along a portion of an approaching side of a tail boom of a helicopter. A number of vortex generators (VGs) may extend along a portion of a retreating side of the tail boom. For tail booms with circular cross sections, the strake and the VGs are positioned between approximately 5 and 15 degrees below a horizontal plane of the tail boom when viewed end on, on respective sides of the tail boom. For tail booms with non-circular cross sections, the strake and the VGs is positioned between approximately 5 and 15 degrees above a location where a change in curvature is greatest (e.g., where flow separation would otherwise occur) on a bottom half of the tail boom when viewed end on, on respective sides of the tail boom. A fairing may be located on the retreating side on the upper half of the tail boom, to create an asymmetric profile.

    AIRCRAFT STABILIZATION SYSTEMS AND METHODS OF MODIFYING AN AIRCRAFT WITH THE SAME
    3.
    发明公开
    AIRCRAFT STABILIZATION SYSTEMS AND METHODS OF MODIFYING AN AIRCRAFT WITH THE SAME 审中-公开
    飞机稳定系统和变型的飞机订单方法

    公开(公告)号：EP2935002A4

    公开(公告)日：2016-02-24

    申请号：EP13874489

    申请日：2013-12-17

    申请人： BLR AEROSPACE LLC

    发明人： DESROCHE ROBERT J

    IPC分类号： B64C27/82

    CPC分类号： B64C27/12 ,  B64C27/04 ,  B64C2027/8245 ,  Y10T29/49622

    摘要： A method of modifying a helicopter includes providing a tail boom of the helicopter and modifying a surface profile of the tail boom on at least a first side of the tail boom to improve flow attachment of air flowing over the first side of the modified tail boom during operation of the helicopter. The first side of the tail boom is located on an opposite side of the tail boom from a second side of the tail boom towards which a main rotor blade of the helicopter approaches during rotation.

    AIRCRAFT STABILIZATION SYSTEMS AND METHODS OF MODIFYING AN AIRCRAFT WITH THE SAME
    6.
    发明公开
    AIRCRAFT STABILIZATION SYSTEMS AND METHODS OF MODIFYING AN AIRCRAFT WITH THE SAME 审中-公开
    飞机稳定系统和变型的飞机订单方法

    公开(公告)号：EP2935002A2

    公开(公告)日：2015-10-28

    申请号：EP13874489.1

    申请日：2013-12-17

    申请人： BLR Aerospace, LLC

    发明人： DESROCHE, Robert, J.

    IPC分类号： B64C27/82

    CPC分类号： B64C27/12 ,  B64C27/04 ,  B64C2027/8245 ,  Y10T29/49622

    摘要： A method of modifying a helicopter includes providing a tail boom of the helicopter and modifying a surface profile of the tail boom on at least a first side of the tail boom to improve flow attachment of air flowing over the first side of the modified tail boom during operation of the helicopter. The first side of the tail boom is located on an opposite side of the tail boom from a second side of the tail boom towards which a main rotor blade of the helicopter approaches during rotation.