公开(公告)号：US11091258B2

公开(公告)日：2021-08-17

申请号：US16442288

申请日：2019-06-14

Applicant: Bell Textron Inc.

Inventor： Kirk L. Groninga ,  Daniel B. Robertson

IPC: B64C29/00 ,  B64C39/04 ,  B64D27/02

Abstract: An exemplary tiltrotor aircraft having a vertical takeoff and landing (VTOL) flight mode and a forward flight mode includes tiltable rotors located at forward boom ends, tiltable ducted fans located at wings aft of the forward boom ends, and aft rotors located on aft boom portions.

公开(公告)号：US11613375B2

公开(公告)日：2023-03-28

申请号：US16414402

申请日：2019-05-16

Applicant: Bell Textron Inc.

Inventor： Kirk L. Groninga ,  Daniel B. Robertson

IPC: B64D35/08 ,  B64C27/12 ,  B64C27/28 ,  B64D27/24 ,  F16H1/28 ,  F16H57/00 ,  H02K7/116

Abstract: An exemplary dual motor input includes a common shaft for coupling to a member to be rotationally driven, a first motor rotationally coupled to a first drive shaft, the first drive shaft coupled to the common shaft, and a second motor rotationally coupled to a second drive shaft, the second drive shaft coupled to the common shaft.

公开(公告)号：US11873085B2

公开(公告)日：2024-01-16

申请号：US17366834

申请日：2021-07-02

Applicant: Bell Textron Inc.

Inventor： Kirk L. Groninga ,  Daniel B. Robertson

IPC: B64C29/00 ,  B64C39/04 ,  B64D27/02

CPC classification number: B64C29/0033 ,  B64C29/0025 ,  B64C39/04 ,  B64D2027/026

Abstract: An exemplary tiltrotor aircraft having a vertical takeoff and landing (VTOL) flight mode and a forward flight mode includes tiltable rotors located at forward boom ends, tiltable ducted fans located at wings aft of the forward boom ends, and aft rotors located on aft boom portions.

公开(公告)号：US11117655B2

公开(公告)日：2021-09-14

申请号：US16436406

申请日：2019-06-10

Applicant: Bell Textron Inc.

Inventor： Kirk L. Groninga ,  Daniel B. Robertson

IPC: B64C27/82 ,  B64C27/78 ,  B64C27/52

Abstract: An exemplary tail rotor includes a first blade assembly configured to rotate in a first direction about an axis of rotation and a second blade assembly configured to rotate in a second direction about the axis of rotation.

公开(公告)号：US12246827B1

公开(公告)日：2025-03-11

申请号：US18530482

申请日：2023-12-06

Applicant: Bell Textron Inc.

Inventor： Kirk L. Groninga ,  Daniel B. Robertson

IPC: B64C29/00 ,  B64C15/02 ,  B64C39/04

Abstract: An exemplary tiltrotor aircraft having a vertical takeoff and landing (VTOL) flight mode and a forward flight mode includes tiltable rotors located at forward boom ends, tiltable ducted fans located at wings aft of the forward boom ends, and aft rotors located on aft boom portions.

公开(公告)号：US11097838B2

公开(公告)日：2021-08-24

申请号：US16442180

申请日：2019-06-14

Applicant: Bell Textron Inc.

Inventor： Kirk L. Groninga ,  Daniel B. Robertson ,  Matthew E. Louis

IPC: B64C29/00 ,  B64C27/52 ,  B64C27/22 ,  B64C11/00

Abstract: An exemplary ducted fan with an optimized stator includes a duct surrounding a rotor hub from which blades radially extend and the stator having a stator span extending horizontally across an inside diameter of the duct, the stator having a stator chord extending from a leading edge to a trailing edge, wherein a length of the stator chord varies across the stator span.