公开(公告)号：EP3437992A1

公开(公告)日：2019-02-06

申请号：EP17190934.4

申请日：2017-09-13

Applicant: Bell Helicopter Textron Inc.

Inventor： SHERRILL, Paul ,  LEDBETTER, Tim ,  YATES, Kelli ,  SELF, Robert ,  GREEN, Nathan ,  COLE, Russell

IPC: B64C27/473 ,  B64C27/82

CPC classification number: B64C27/008 ,  B64C27/04 ,  B64C27/463 ,  B64C27/473 ,  B64C27/82

Abstract: The present invention includes a span-balance pocket (302) in a surface of a rotor blade (304), the span-balance pocket (302) including an inboard surface (309) and an outboard surface (307); and one or more weights (306) disposed in the span-balance pocket to span-balance the rotor blade; and at least one of one or more retention devices (308) to retain the one or more weights against the outboard surface (307) of the span-balance pocket, wherein the span-balance pocket is machined or molded into a tip block of the rotor blade (304).

公开(公告)号：EP3437992B1

公开(公告)日：2019-09-04

申请号：EP17190934.4

申请日：2017-09-13

Applicant: Bell Helicopter Textron Inc.

Inventor： SHERRILL, Paul ,  LEDBETTER, Tim ,  YATES, Kelli ,  SELF, Robert ,  GREEN, Nathan ,  COLE, Russell

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

公开(公告)号：EP3437991B1

公开(公告)日：2020-02-12

申请号：EP17191478.1

申请日：2017-09-15

Applicant: Bell Helicopter Textron Inc.

Inventor： SELF, Robert ,  GREEN, Nathan P. ,  McCULLOUGH, John R. ,  COLE, Russell ,  SHERRILL, Paul ,  WARDLAW, Robert

IPC: B64C27/473 ,  B64C27/82

公开(公告)号：EP3437991A1

公开(公告)日：2019-02-06

申请号：EP17191478.1

申请日：2017-09-15

Applicant: Bell Helicopter Textron Inc.

Inventor： SELF, Robert ,  GREEN, Nathan P ,  McCULLOUGH, John R ,  COLE, Russell ,  SHERRILL, Paul ,  WARDLAW, Robert

IPC: B64C27/00 ,  B64C27/473

Abstract: The present invention includes a rotor-blade span-balancing system (300), including a span-balance pocket (315) in a surface (320) of a rotor blade (106); a cover (305) operably configured to cover the span-balance pocket (315), wherein the cover (305) is operably configured to be substantially flush with the surface of the rotor blade surface (320) when covering the span-balance pocket (315), and wherein the cover (305) includes a cover boss (330) for reacting centrifugal force of the cover (305) into the rotor blade (106); and one or more span-balance weights (310) attached to the cover (305) to span-balance the rotor blade (106).