公开(公告)号：US10994837B1

公开(公告)日：2021-05-04

申请号：US16655855

申请日：2019-10-17

Applicant: Bell Textron Inc.

Inventor： Kyle Thomas Cravener ,  Andrew Maresh ,  Mark Adam Wiinikka

IPC: B64C11/32 ,  B64C27/57 ,  B64C29/00 ,  B64C27/80 ,  B64C11/28 ,  B64C27/605

Abstract: An exemplary pitch lock for a tiltrotor aircraft to enable and disable a pitching degree of freedom of a rotor blade assembly includes a first tab coupled to a blade stop assembly, the first tab having a first ramp surface, a second tab coupled to a blade cuff, the second tab having a second ramp surface, a hasp having a central opening to receive the first and the second tab and rollers rotatably coupled to the hasp on opposite sides of the central opening, where the rollers engage the first and second ramp surfaces and retain the first and the second tabs in the central opening.

公开(公告)号：US20200317329A1

公开(公告)日：2020-10-08

申请号：US16372732

申请日：2019-04-02

Applicant: Bell Textron Inc.

Inventor： Mark Adam Wiinikka ,  John McCullough ,  Russell Steven Cole ,  William Russell Cleary, JR. ,  Zachary Edwin Dailey

IPC: B64C27/48 ,  B29C70/54

Abstract: An embodiment rotorcraft main rotor system, including a yoke, a rotor blade, and a grip assembly attaching the rotor blade to the yoke. The grip assembly includes a grip body formed from a contiguous laminated composite and has a substantially constant thickness, where the grip body has an upper extension, a lower extension and a connecting portion connected between an inboard end of the upper extension and an inboard end of the lower extension. An inside surface of the upper extension faces, and is substantially parallel to, an inside surface of the lower extension, and the upper extension has first features and the lower extension has second features that are aligned with the first features, where the first features and second features each include at least one of an edge contour, attachment holes, or first protective elements.

公开(公告)号：US11760470B2

公开(公告)日：2023-09-19

申请号：US17306303

申请日：2021-05-03

Applicant: Bell Textron Inc.

Inventor： Kevin Knott ,  Vitthal Vishnuthreeth Arakeri ,  Alvin Jones ,  Scott David Poster ,  Steven Paul Pape ,  Mark Adam Wiinikka

IPC: B64F1/12 ,  B64F5/50 ,  B64C27/605 ,  B64C27/82 ,  B64C27/35

CPC classification number: B64C27/605 ,  B64C27/35 ,  B64C27/82 ,  B64F1/125 ,  B64F5/50

Abstract: An exemplary rotorcraft lockout system includes a main rotor lockout comprising a base operable to be attached to a bottom surface of a fuselage and a first and a second tension arm operable to be connected to the base and a main rotor hub, and a tail rotor lockout including a clamp operable to connect to a horizontal stabilizer, a rotor arm connector operable to connect to a tail rotor hub, and a tail rotor tension arm operable to interconnect the clamp and the rotor arm connector in tension.