公开(公告)号：US20140255201A1

公开(公告)日：2014-09-11

申请号：US13789265

申请日：2013-03-07

Applicant: BELL HELICOPTER TEXTRON INC.

Inventor： Drew Sutton ,  Tim Ledbetter

IPC: F01D5/14

CPC classification number: F01D5/147 ,  B64C27/463 ,  Y10T29/49337

Abstract: A rotor blade has a spanwise axis, a root comprising an anchor having an anchor surface configured to form at least one of a normal angle relative to the spanwise axis and an acute angle relative to the spanwise axis, and a selectively removable tip comprising a connector having a connector surface configured to complement the anchor surface.

Abstract translation: 转子叶片具有翼展方向轴线，根部包括具有锚定表面的锚固件，锚固件表面构造成相对于翼展方向轴线形成相对于翼展方向轴线的法线角度和相对于翼展方向轴线的锐角中的至少一个，以及包括连接器 具有构造成补充锚固表面的连接器表面。

公开(公告)号：US11261735B2

公开(公告)日：2022-03-01

申请号：US13789265

申请日：2013-03-07

Applicant: Bell Helicopter Textron Inc.

Inventor： Drew Sutton ,  Tim Ledbetter

IPC: F01D5/14 ,  B64C27/46

Abstract: A rotor blade has a spanwise axis, a root comprising an anchor having an anchor surface configured to form at least one of a normal angle relative to the spanwise axis and an acute angle relative to the spanwise axis, and a selectively removable tip comprising a connector having a connector surface configured to complement the anchor surface.

公开(公告)号：US10822075B2

公开(公告)日：2020-11-03

申请号：US15664809

申请日：2017-07-31

Applicant: Bell Helicopter Textron Inc.

Inventor： Paul Sherrill ,  Tim Ledbetter ,  Kelli Yates ,  Robert Self ,  Nathan Green ,  Russell Cole

IPC: B64C27/04 ,  B64C27/00 ,  B64C27/46 ,  B64C27/473 ,  B64C27/82

Abstract: The present invention includes a span-balance pocket in a surface of a rotor blade, the span-balance pocket including an inboard surface and an outboard surface; and one or more weights disposed in the span-balance pocket to span-balance the rotor blade; and at least one of one or more retention devices to retain the one or more weights against the outboard surface of the span-balance pocket or the span-balance pocket is machined or molded into a tip block of the rotor blade.

公开(公告)号：US20190031327A1

公开(公告)日：2019-01-31

申请号：US15664809

申请日：2017-07-31

Applicant: Bell Helicopter Textron Inc.

Inventor： Paul Sherrill ,  Tim Ledbetter ,  Kelli Yates ,  Robert Self ,  Nathan Green ,  Russell Cole

IPC: B64C27/00 ,  B64C27/46 ,  B64C27/04

Abstract: The present invention includes a span-balance pocket in a surface of a rotor blade, the span-balance pocket including an inboard surface and an outboard surface; and one or more weights disposed in the span-balance pocket to span-balance the rotor blade; and at least one of one or more retention devices to retain the one or more weights against the outboard surface of the span-balance pocket or the span-balance pocket is machined or molded into a tip block of the rotor blade.