公开(公告)号：US10343787B2

公开(公告)日：2019-07-09

申请号：US15788039

申请日：2017-10-19

Applicant: Bell Helicopter Textron Inc.

Inventor： Alison Ann Davis ,  Charles Speller

IPC: B64D35/00 ,  B64C27/12 ,  B64C27/82

Abstract: A rotor system including a hub; a rim configured to rotate about the hub, the rim including an interior surface and an engagement surface; a plurality of rotor blades extending from the hub and coupled to the interior surface of the rim; and one or more outer drive gears disposed adjacent to the engagement surface of the rim; each of the one or more outer drive gears including a plurality of teeth for engaging the engagement surface of the rim; wherein the one or more outer drive gears are configured to rotate the rim such that the plurality of rotor blades rotates about the hub. Other aspects provide an aircraft rotor system and methods of operating an aircraft rotor system.

公开(公告)号：US11077936B2

公开(公告)日：2021-08-03

申请号：US15874967

申请日：2018-01-19

Applicant: Bell Helicopter Textron Inc.

Inventor： Charles Speller

IPC: B64C27/12 ,  F16H57/04

Abstract: A fluid delivery device includes a body and a reed. The body has a primary inflow passage, a secondary inflow passage, and an outflow passage. The reed is disposed at least partially within the body. The reed is configured to move to a first position when a fluid flows from the primary inflow passage and move to a second position when the fluid flows from the secondary inflow passage.

公开(公告)号：US10745124B2

公开(公告)日：2020-08-18

申请号：US16429863

申请日：2019-06-03

Applicant: Bell Helicopter Textron Inc.

Inventor： Alison Ann Davis ,  Charles Speller

IPC: B64C27/82 ,  B64C27/06 ,  B64C11/02 ,  B64C11/30

Abstract: A rotor system for an aircraft including a driving member; an externally driven rim configured to be rotated by the driving member; a hub having a hub axis, the hub including a rotatable housing and a non-rotatable housing; a plurality of rotor blade assemblies rotatably coupled to the rotatable housing of the hub and the externally driven rim such that rotation of the externally driven rim rotates the plurality of rotor blade assemblies about the hub axis, each rotor blade assembly having a rotor blade rotatable about a respective pitch change axis; and a pitch control mechanism operably associated with the hub and the plurality of rotor blade assemblies, wherein, actuation of the pitch control mechanism rotates each rotor blade assembly about the respective pitch change axis to collectively control the pitch of the rotor blade, thereby generating a variable thrust output. Also, a method of operating the rotor system.

公开(公告)号：US20190283868A1

公开(公告)日：2019-09-19

申请号：US16429863

申请日：2019-06-03

Applicant: Bell Helicopter Textron Inc.

Inventor： Alison Ann Davis ,  Charles Speller

IPC: B64C27/82 ,  B64C27/06 ,  B64C11/30 ,  B64C11/02

Abstract: A rotor system for an aircraft including a driving member; an externally driven rim configured to be rotated by the driving member; a hub having a hub axis, the hub including a rotatable housing and a non-rotatable housing; a plurality of rotor blade assemblies rotatably coupled to the rotatable housing of the hub and the externally driven rim such that rotation of the externally driven rim rotates the plurality of rotor blade assemblies about the hub axis, each rotor blade assembly having a rotor blade rotatable about a respective pitch change axis; and a pitch control mechanism operably associated with the hub and the plurality of rotor blade assemblies, wherein, actuation of the pitch control mechanism rotates each rotor blade assembly about the respective pitch change axis to collectively control the pitch of the rotor blade, thereby generating a variable thrust output. Also, a method of operating the rotor system.

公开(公告)号：US20190225328A1

公开(公告)日：2019-07-25

申请号：US15874967

申请日：2018-01-19

Applicant: Bell Helicopter Textron Inc.

Inventor： Charles Speller

IPC: B64C27/12 ,  F16H57/04

Abstract: A fluid delivery device includes a body and a reed. The body has a primary inflow passage, a secondary inflow passage, and an outflow passage. The reed is disposed at least partially within the body. The reed is configured to move to a first position when a fluid flows from the primary inflow passage and move to a second position when the fluid flows from the secondary inflow passage.

公开(公告)号：US20190118961A1

公开(公告)日：2019-04-25

申请号：US15788039

申请日：2017-10-19

Applicant: Bell Helicopter Textron Inc.

Inventor： Alison Ann Woodruff ,  Charles Speller

IPC: B64D35/00 ,  B64C27/82 ,  B64C27/12

CPC classification number: B64D35/00 ,  B64C27/12 ,  B64C27/82 ,  B64C2027/8254

Abstract: A rotor system including a hub; a rim configured to rotate about the hub, the rim including an interior surface and an engagement surface; a plurality of rotor blades extending from the hub and coupled to the interior surface of the rim; and one or more outer drive gears disposed adjacent to the engagement surface of the rim; each of the one or more outer drive gears including a plurality of teeth for engaging the engagement surface of the rim; wherein the one or more outer drive gears are configured to rotate the rim such that the plurality of rotor blades rotates about the hub. Other aspects provide an aircraft rotor system and methods of operating an aircraft rotor system.