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公开(公告)号：US11286036B2
公开(公告)日：2022-03-29
申请号：US16159178
申请日：2018-10-12
Applicant: Bell Helicopter Textron Inc.
Inventor： Kirk L. Groninga , Daniel B. Robertson , Matthew Edward Louis , Robert Glenn Vaughn , Michael J. Ryan , Brent Randal Achttien
Abstract: A rotor system is provided in one example embodiment and may include a rotor duct; at least one rotor blade, wherein the at least one rotor blade comprises a tip end; and a tip extension affixed at the tip end of the at least one rotor blade, wherein the tip extension is comprised, at least in part, of a flexible material and the rotor blade has a fixed extended length based on the tip extension. The tip extension may provide a clearance distance between the tip extension and the rotor duct.
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公开(公告)号：US20190135427A1
公开(公告)日：2019-05-09
申请号：US15808856
申请日：2017-11-09
Applicant: Bell Helicopter Textron Inc.
Inventor： Daniel B. Robertson , Kirk L. Groninga
Abstract: In one embodiment, a tailsitter aircraft comprises a fuselage; a plurality of wings extending radially from the fuselage; a plurality of rotors coupled to the plurality of wings, wherein each rotor of the plurality of rotors is coupled to a particular wing of the plurality of wings, and wherein the plurality of rotors consists of three rotors; and at least one engine to power the plurality of rotors.
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公开(公告)号：US10421541B2
公开(公告)日：2019-09-24
申请号：US15483541
申请日：2017-04-10
Applicant: Bell Helicopter Textron Inc.
Inventor： Kirk L. Groninga , Daniel B. Robertson , Matthew E. Louis
IPC: B64D31/00 , B64C29/00 , F04D29/28 , B64C15/12 , B64D27/24 , F04D17/04 , F04D27/00 , F04D29/30 , B64C3/38 , B64D35/02 , B64D35/04 , B64D27/02
Abstract: An aspect provides an aircraft including a fuselage and a cross-flow fan system attached to the fuselage. The cross-flow fan system including a cross-flow fan assembly associated with a rotatable wing member having an exterior aerodynamic surface. In one aspect, there is provided an aircraft with a fuselage having a forward portion and an aft portion; a first cross-flow fan system rotatably attached to the left side of the forward portion of the fuselage; a second cross-flow fan system rotatably attached to the right side of the forward portion of the fuselage; a third cross-flow fan system rotatably attached to the left side of the aft portion of the fuselage; and a fourth cross-flow fan system rotatably attached to the right side of the aft portion of the fuselage.
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公开(公告)号：US20180362160A1
公开(公告)日：2018-12-20
申请号：US15623328
申请日：2017-06-14
Applicant: Bell Helicopter Textron Inc.
Inventor： Kirk L. Groninga , John Lloyd , Daniel B. Robertson
Abstract: In a first aspect, there is a personal air vehicle including a body having a forward portion, a central portion and an aft portion; a first ducted fan supported by the forward portion of the body; a second ducted fan supported by the aft portion of the body; and third and fourth ducted fans supported by the left and right sides of the body and pivotable relative to the body. An aspect provides a method of flying the personal air vehicle.
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公开(公告)号：US20180111680A1
公开(公告)日：2018-04-26
申请号：US15298959
申请日：2016-10-20
Applicant: Bell Helicopter Textron Inc.
Inventor： Carlos A. Fenny , Daniel B. Robertson , Kirk L. Groninga , Troy C. Schank
CPC classification number: B64C27/025 , B64C27/18 , B64C27/82 , B64C2027/8209 , B64C2027/8236 , B64D27/02 , B64D27/24 , B64D2027/026 , B64F1/362 , Y02T50/44 , Y02T50/64
Abstract: A rotorcraft capable of a hover mode and a forward cruise mode including a fuselage, a first electric propulsion system, a second electric propulsion system, and an electric power control unit to control power to the first and second electric propulsion systems in the hover and forward cruise modes. The first electric propulsion system is a tip jet cold flow system that imparts rotation on a pair of rotor blades disposed above a top surface of the fuselage, and a first electric motor configured to drive the tip jet cold flow system. The second electric propulsion system includes a propeller disposed in the rear of the fuselage and a second electric motor configured to drive the propeller.
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Patent Agency Ranking
公开(公告)号：US10589855B2
公开(公告)日：2020-03-17
申请号：US15621686
申请日：2017-06-13
Applicant: Bell Helicopter Textron Inc.
Inventor： Kirk L. Groninga , Daniel B. Robertson
Abstract: In a first aspect, there is a rotor system for a tiltrotor aircraft, the rotor system including an upper outboard engine in a fixed location on a wing member of the tiltrotor aircraft; a lower outboard engine in a fixed location on the wing member; and a prop-rotor pylon in power communication with the upper and lower outboard engines, the prop-rotor pylon being configured to selectively rotate between a vertical position and a horizontal position. In another aspect, there is provided a tiltrotor aircraft including a fuselage; a wing member; an upper outboard engine in a fixed location on the wing member; a lower outboard engine in a fixed location on the wing member; and a prop-rotor pylon in power communication with the upper and lower outboard engines, the prop-rotor pylon being configured to selectively rotate between a vertical position and a horizontal position.
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公开(公告)号：US10479495B2
公开(公告)日：2019-11-19
申请号：US15483652
申请日：2017-04-10
Applicant: Bell Helicopter Textron Inc.
Inventor： Kirk L. Groninga , Daniel B. Robertson , Matthew E. Louis
Abstract: In one aspect, there is provided an aircraft, including a fuselage having a longitudinal axis extending from a front portion through an aft portion; first and second tail members extending from the aft portion; a first cross-flow fan system rotatably mounted to the first tail member; and a second cross-flow fan system rotatably mounted to the second tail member. The first and second cross-flow fan systems are configured to provide a forward thrust vector and an anti-torque vector on the aircraft. The first and second cross-flow fan systems can have a rotational axis oriented generally vertically. In another aspect, there is an aircraft including a fuselage having a front portion and a tail portion; and a cross-flow fan system supported by the tail portion. Embodiments include a cross-flow fan system retrofittable onto an aircraft and methods for retrofitting an aircraft with a cross-flow fan system.
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8.发明申请公开(公告)号：US20180044013A1
公开(公告)日：2018-02-15
申请号：US15483602
申请日：2017-04-10
Applicant: Bell Helicopter Textron Inc.
Inventor： Kirk L. Groninga , Daniel B. Robertson , Matthew E. Louis
CPC classification number: B64C29/0033 , B64C3/32 , B64C15/12 , B64C23/02 , B64C39/005 , B64D27/24 , B64D2027/026 , F04D17/04 , F04D29/282 , F04D29/287
Abstract: A variable thrust cross-flow fan system for an aircraft including a rotatable wing member having a first housing member; an actuator assembly operably coupled to the first housing member; and a variable thrust cross-flow fan assembly including a first and second driver plates having a plurality of blades rotatably mounted therebetween. The plurality of blades has a circular path of travel when rotating and includes a control assembly coupled to the plurality of blades to generate a variable thrust force. The control assembly includes a control cam that is substantially non-rotatable relative to the first and second driver plates and a hinge member that is fixedly connected to the control cam and to the first housing member at a hinge axis. Rotation of the first housing member by the actuator assembly imparts rotation of the control cam about the hinge axis, thereby changing the direction of the variable thrust force.
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公开(公告)号：US10730622B2
公开(公告)日：2020-08-04
申请号：US15623328
申请日：2017-06-14
Applicant: Bell Helicopter Textron Inc.
Inventor： Kirk L. Groninga , John Lloyd , Daniel B. Robertson
Abstract: In a first aspect, there is a personal air vehicle including a body having a forward portion, a central portion and an aft portion; a first ducted fan supported by the forward portion of the body; a second ducted fan supported by the aft portion of the body; and third and fourth ducted fans supported by the left and right sides of the body and pivotable relative to the body. An aspect provides a method of flying the personal air vehicle.
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公开(公告)号：US10427780B2
公开(公告)日：2019-10-01
申请号：US15298959
申请日：2016-10-20
Applicant: Bell Helicopter Textron Inc.
Inventor： Carlos A. Fenny , Daniel B. Robertson , Kirk L. Groninga , Troy C. Schank
Abstract: A rotorcraft capable of a hover mode and a forward cruise mode including a fuselage, a first electric propulsion system, a second electric propulsion system, and an electric power control unit to control power to the first and second electric propulsion systems in the hover and forward cruise modes. The first electric propulsion system is a tip jet cold flow system that imparts rotation on a pair of rotor blades disposed above a top surface of the fuselage, and a first electric motor configured to drive the tip jet cold flow system. The second electric propulsion system includes a propeller disposed in the rear of the fuselage and a second electric motor configured to drive the propeller.
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