-
公开(公告)号：US20230099083A1
公开(公告)日：2023-03-30
申请号：US18060801
申请日：2022-12-01
Applicant: Textron Innovations Inc.
Inventor： Sung Kyun Kim
Abstract: In accordance with an embodiment, a method of operating an aircraft includes operating the aircraft in a first mode including determining an attitude based on a pilot stick signal, where a translational speed or an attitude of the aircraft is proportional to an amplitude of the pilot stick signal in the first mode; transitioning from the first mode to a second mode when a velocity of the aircraft exceeds a first velocity threshold; and operating the aircraft in the second mode where the output of the rate controller is proportional to the amplitude of the pilot stick signal.
-
公开(公告)号：US11479353B2
公开(公告)日：2022-10-25
申请号：US16879074
申请日：2020-05-20
Applicant: Textron Innovations Inc.
Inventor： John Richard McCullough , Andrew Thomas Carter , Sung Kyun Kim , Matthew John Hill
Abstract: An aircraft includes an airframe with first and second wings having a fuselage extending therebetween. A propulsion assembly is coupled to the fuselage and includes a counter-rotating coaxial rotor system that is tiltable relative to the fuselage to generate a thrust vector. Tail assemblies are coupled to wingtips of the first and second wings each having an elevon that collectively form a distributed array of elevons. A flight control system is configured to direct the thrust vector of the coaxial rotor system and to control movements of the elevons such that the elevons collectively provide pitch authority and differentially provide roll authority for the aircraft in the biplane orientation. In addition, when the flight control system detects an elevon fault, the flight control system is configured to perform corrective action responsive thereto at a distributed elevon level or at a coordinated distributed elevon and propulsion assembly level.
-
公开(公告)号：US20210302959A1
公开(公告)日：2021-09-30
申请号：US17346989
申请日：2021-06-14
Applicant: Textron Innovations Inc.
Inventor： Sung Kyun Kim
Abstract: In accordance with an embodiment, a method of operating an aircraft includes operating the aircraft in a first mode including determining an attitude based on a pilot stick signal, where a translational speed or an attitude of the aircraft is proportional to an amplitude of the pilot stick signal in the first mode; transitioning from the first mode to a second mode when a velocity of the aircraft exceeds a first velocity threshold; and operating the aircraft in the second mode where the output of the rate controller is proportional to the amplitude of the pilot stick signal.
-
公开(公告)号：US11048273B2
公开(公告)日：2021-06-29
申请号：US16004254
申请日：2018-06-08
Applicant: Textron Innovations Inc.
Abstract: A method of operating a rotorcraft includes receiving multiple first height data signals from multiple first height sensors on the rotorcraft, wherein the first height sensors measure height using a first technique, receiving multiple second height data signals from multiple second height sensors on the rotorcraft, wherein the second height sensors measure height using a second technique that is different than the first technique, determining a first height signal from the multiple first height data signals based on a selection scheme, determining a second height signal from the multiple second height data signals, selecting the first height signal or the second height signal to determine a selected height signal, and generating a flight control signal and controlling operation of the rotorcraft according to the flight control signal, the flight control signal based on the selected height signal.
-
公开(公告)号：US11650604B2
公开(公告)日：2023-05-16
申请号：US17720254
申请日：2022-04-13
Applicant: Textron Innovations Inc.
Inventor： John Richard McCullough , Andrew Thomas Carter , Sung Kyun Kim , Matthew John Hill
CPC classification number: G05D1/0858 , B64C5/10 , B64C29/02
Abstract: An aircraft includes an airframe with first and second wings having a fuselage extending therebetween. A propulsion assembly is coupled to the fuselage and includes a counter-rotating coaxial rotor system that is tiltable relative to the fuselage to generate a thrust vector. First and second yaw vanes extend aftwardly from the fuselage. A flight control system is configured to direct the thrust vector of the coaxial rotor system and control movements of the yaw vanes. In a VTOL orientation of the aircraft, differential operation of the yaw vanes and/or differential operations of first and second rotor assemblies of the coaxial rotor system provide yaw authority for the aircraft. In a biplane orientation of the aircraft, collective operation of the yaw vanes provides yaw authority for the aircraft.
-
Patent Agency Ranking
公开(公告)号：US11561539B2
公开(公告)日：2023-01-24
申请号：US17346989
申请日：2021-06-14
Applicant: Textron Innovations Inc.
Inventor： Sung Kyun Kim
Abstract: In accordance with an embodiment, a method of operating an aircraft includes operating the aircraft in a first mode including determining an attitude based on a pilot stick signal, where a translational speed or an attitude of the aircraft is proportional to an amplitude of the pilot stick signal in the first mode; transitioning from the first mode to a second mode when a velocity of the aircraft exceeds a first velocity threshold; and operating the aircraft in the second mode where the output of the rate controller is proportional to the amplitude of the pilot stick signal.
-
公开(公告)号：US11136136B2
公开(公告)日：2021-10-05
申请号：US15978646
申请日：2018-05-14
Applicant: Textron Innovations Inc.
Inventor： Robert Earl Worsham, II , Morganne Cody Klein , Christopher M. Bothwell , Luke Dafydd Gillett , Jillian Samantha Alfred , Sung Kyun Kim , Stephanie Baynham , Troy Caudill
Abstract: In an embodiment, a method of indicating flight modes of a rotorcraft includes: detecting a change in flight mode of the rotorcraft from a previous flight mode to an active flight mode, the active flight mode and the previous flight mode each being from one of a first subset or a second subset of a plurality of flight modes; determining whether the active flight mode and the previous flight mode are from different subsets of the plurality of flight modes; and updating one or more flight mode indicators on an instrument panel of the rotorcraft in response to the active flight mode and the previous flight mode being from different subsets of the plurality of flight modes.
-
公开(公告)号：US10816999B2
公开(公告)日：2020-10-27
申请号：US15996132
申请日：2018-06-01
Applicant: Textron Innovations Inc.
Inventor： Luke Dafydd Gillett , Sung Kyun Kim , Robert Earl Worsham, II
Abstract: In an embodiment, a rotorcraft includes: a flight control computer configured to: receive a first sensor signal from a first aircraft sensor of the rotorcraft; receive a second sensor signal from a second aircraft sensor of the rotorcraft, the second aircraft sensor being different from the first aircraft sensor; combine the first sensor signal and the second sensor signal with a complementary filter to determine an estimated vertical speed of the rotorcraft; adjust flight control devices of the rotorcraft according to the estimated vertical speed of the rotorcraft, thereby changing flight characteristics of the rotorcraft; and reset the complementary filter in response to detecting the rotorcraft is grounded.
-
公开(公告)号：US20210362852A1
公开(公告)日：2021-11-25
申请号：US16879129
申请日：2020-05-20
Applicant: Textron Innovations Inc
Inventor： John Richard McCullough , Andrew Thomas Carter , Sung Kyun Kim , Matthew John Hill
Abstract: A propulsion assembly for an aircraft operable to transition between thrust-borne lift in a VTOL orientation and wing-borne lift in a biplane orientation. The propulsion assembly includes a housing coupled to the fuselage of the aircraft. A coaxial rotor system includes a first rotor assembly and a second rotor assembly that are rotatable about a common axis of rotation. The first rotor assembly counter-rotates relative to the second rotor assembly. A motor assembly is operably associated with the coaxial rotor system. The motor assembly provides torque and rotational energy to the first rotor assembly and the second rotor assembly. A gimbal assembly couples the coaxial rotor system to the housing such that the coaxial rotor system is tiltable relative to the fuselage to generate a thrust vector.
-
公开(公告)号：US20210362851A1
公开(公告)日：2021-11-25
申请号：US16879070
申请日：2020-05-20
Applicant: Textron Innovations Inc.
Inventor： John Richard McCullough , Andrew Thomas Carter , Sung Kyun Kim , Matthew John Hill , Lynn Francis Eschete
Abstract: An aircraft operable to transition between thrust-borne lift in a VTOL orientation and wing-borne lift in a biplane orientation. The aircraft has an airframe including first and second wings with a fuselage extending therebetween. A propulsion assembly is coupled to the fuselage and includes a counter-rotating coaxial rotor system that is tiltable relative to the fuselage to generate a thrust vector. A flight control system is configured to direct the thrust vector. In the VTOL orientation, the first wing is forward of the fuselage, the second wing is aft of the fuselage and the coaxial rotor system is configured to provide thrust in line with a yaw axis of the aircraft. In the biplane orientation, the first wing is below the fuselage, the second wing is above the fuselage and the coaxial rotor system is configured to provide thrust in line with a roll axis of the aircraft.
-
-
-
-
-
-
-
-
-
Search Results
22
records
(took 0.016 seconds)
