公开(公告)号：US10787253B2

公开(公告)日：2020-09-29

申请号：US16183035

申请日：2018-11-07

Applicant: Bell Helicopter Textron Inc.

Inventor： Thomas Dewey Parsons ,  Carlos Alexander Fenny ,  Erik John Oltheten

IPC: B64C27/82

Abstract: The present invention includes an anti-torque assembly for a helicopter comprising a plurality of fixed blade pitch motors mounted on one or more pivots on the tail boom of the helicopter, wherein the plurality of fixed blade pitch motors on the one or more pivots are adapted to be oriented substantially in-plane with a tail boom of a helicopter during a first mode of operation that comprises a hover mode and wherein the fixed blade pitch motors are adapted to be oriented substantially off-plane from the tail boom of the helicopter during a second mode of helicopter operation that is different from the first mode.

公开(公告)号：US10703471B2

公开(公告)日：2020-07-07

申请号：US15458525

申请日：2017-03-14

Applicant: Bell Helicopter Textron Inc.

Inventor： Carlos Fenny ,  Thomas Dewey Parsons ,  Erik John Oltheten

IPC: B64C27/82 ,  B64C27/04 ,  G05D1/08

Abstract: The present invention includes an a plurality of first variable speed motors arranged in a first matrix pattern and mounted on a tail boom of the helicopter; one or more fixed pitch blades attached to each of the plurality of first variable speed motors; and wherein a speed of one or more of the plurality of first variable speed motors is varied to provide an anti-torque thrust.

公开(公告)号：US20190250009A1

公开(公告)日：2019-08-15

申请号：US15894871

申请日：2018-02-12

Applicant: Bell Helicopter Textron Inc.

Inventor： Erik John Oltheten ,  Aaron Thomas Halverson

IPC: G01C23/00 ,  G01C21/08 ,  G01S19/40

Abstract: A navigation system for vehicles, such as rotorcraft, includes a directional gyroscope having a magnetic heading correction mode, a nonmagnetic manual heading correction mode and a nonmagnetic automatic heading correction mode. A magnetic field sensor is operably coupled to the directional gyroscope and is operable to generate magnetic north-based signals. A heading correction input is operably coupled to the directional gyroscope and is operable to generate manual signals upon actuation thereof. A global positioning system sensor is operably coupled to the directional gyroscope and is operable to generate track-based signals. In the magnetic heading correction mode, the directional gyroscope receives the magnetic north-based signals for heading corrections. In the nonmagnetic manual heading correction mode, the directional gyroscope receives the manual signals for heading corrections. In the nonmagnetic automatic heading correction mode, the directional gyroscope periodically receives the track-based signals for heading corrections.

公开(公告)号：US20190127082A1

公开(公告)日：2019-05-02

申请号：US16171672

申请日：2018-10-26

Applicant: Bell Helicopter Textron Inc.

Inventor： Erik John Oltheten ,  Thomas Wayne Brooks

IPC: B64D45/08 ,  B64D43/02

CPC classification number: B64D45/08 ,  B64C27/006 ,  B64D43/02 ,  B64D2045/0085 ,  G01C23/00

Abstract: Embodiments are directed to flight instrument warnings that are configured to automatically adjust a low airspeed warning band on an airspeed indicator based on available torque margin and radar altimeter height. Warnings may be presented on a primary flight display or on flight instruments when a low airspeed band is entered.

公开(公告)号：US20170349274A1

公开(公告)日：2017-12-07

申请号：US15458525

申请日：2017-03-14

Applicant: Bell Helicopter Textron Inc.

Inventor： Carlos Fenny ,  Thomas Dewey Parsons ,  Erik John Oltheten

IPC: B64C27/82 ,  G05D1/08 ,  B64C27/04

Abstract: The present invention includes an a plurality of first variable speed motors arranged in a first matrix pattern and mounted on a tail boom of the helicopter; one or more fixed pitch blades attached to each of the plurality of first variable speed motors; and wherein a speed of one or more of the plurality of first variable speed motors is varied to provide an anti-torque thrust.

公开(公告)号：US20170349273A1

公开(公告)日：2017-12-07

申请号：US15172811

申请日：2016-06-03

Applicant: Bell Helicopter Textron Inc.

Inventor： Thomas Dewey Parsons ,  Carlos Alexander Fenny ,  Erik John Oltheten

IPC: B64C27/82

CPC classification number: B64C27/82 ,  B64C2027/8209 ,  B64C2027/8227 ,  B64C2027/8236

Abstract: The present invention includes an anti-torque assembly for a helicopter comprising a plurality of fixed blade pitch motors mounted on one or more pivots on the tail boom of the helicopter, wherein the plurality of fixed blade pitch motors on the one or more pivots are adapted to be oriented substantially in-plane with a tail boom of a helicopter during a first mode of operation that comprises a hover mode and wherein the fixed blade pitch motors are adapted to be oriented substantially off-plane from the tail boom of the helicopter during a second mode of helicopter operation that is different from the first mode.