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公开(公告)号：US20210394895A1
公开(公告)日：2021-12-23
申请号：US16907087
申请日：2020-06-19
Applicant: Textron Innovations Inc.
Abstract: A proprotor system for a ducted aircraft includes a duct and proprotor blades surrounded by the duct. Each proprotor blade is rotatable about a respective pitch change axis. The proprotor blades are configured to change collective pitch about the pitch change axes. The proprotor blades are extendable along the pitch change axes into various positions including a retracted position and an extended position. The proprotor blades change between the retracted position and the extended position based on the collective pitch of the proprotor blades, thereby controlling a tip gap between the proprotor blades and the duct.
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公开(公告)号：US11370536B2
公开(公告)日：2022-06-28
申请号：US16907071
申请日：2020-06-19
Applicant: Textron Innovations Inc.
Abstract: A tip gap control system for a ducted aircraft includes a flight control computer including a blade length control module configured to generate a blade tip actuator command and a proprotor system in data communication with the flight control computer. The proprotor system includes a duct and proprotor blades surrounded by the duct. Each of the proprotor blades includes an active blade tip movable into various positions including a retracted position and an extended position. The tip gap control system also includes one or more actuators coupled to the active blade tips. The one or more actuators move the active blade tips between the various positions based on the blade tip actuator command, thereby controlling a tip gap between the proprotor blades and the duct.
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公开(公告)号：US11273910B2
公开(公告)日：2022-03-15
申请号：US16907093
申请日：2020-06-19
Applicant: Textron Innovations Inc.
Inventor： George Matthew Thompson , Jonathan Andrew Knoll , Nicholas Ralph Carlson , Timothy Brian Carr
Abstract: A proprotor blade for a ducted aircraft including a duct includes a main body having a distal end and a sacrificial blade tip coupled to the distal end of the main body. The sacrificial blade tip includes a deformable core material and a shell layer at least partially covering the deformable core material. The sacrificial blade tip deforms upon contact with the duct, thereby reducing damage to the ducted aircraft.
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公开(公告)号：US20220024571A1
公开(公告)日：2022-01-27
申请号：US16935751
申请日：2020-07-22
Applicant: Textron Innovations Inc.
Inventor： George Matthew Thompson , Brad Joseph Passe , Nicholas Ralph Carlson
IPC: B64C29/00
Abstract: A proprotor system for a ducted aircraft convertible between a vertical takeoff and landing flight mode and a forward flight mode includes a plurality of proprotor blades and a duct surrounding the proprotor blades. The duct includes an adaptive geometry device movable into various positions including a hover position and a cruise position. One or more actuators coupled to the adaptive geometry device are configured to move the adaptive geometry device between the hover position and the cruise position based on the flight mode of the ducted aircraft, thereby improving flight performance of the ducted aircraft.
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公开(公告)号：US20210394898A1
公开(公告)日：2021-12-23
申请号：US16907067
申请日：2020-06-19
Applicant: Textron Innovations Inc.
Abstract: A tip gap monitoring system for a ducted aircraft having a proprotor system including a duct and a plurality of proprotor blades includes sensors coupled to the proprotor system. The sensors are configured to detect one or more parameters of the proprotor system to form a plurality of sensor measurements. The tip gap monitoring system also includes a flight control computer in data communication with the sensors. The flight control computer includes a tip gap measurement module configured to determine a tip gap distance between the duct and the proprotor blades based on the sensor measurements.
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Patent Agency Ranking
公开(公告)号：US11492107B2
公开(公告)日：2022-11-08
申请号：US16935751
申请日：2020-07-22
Applicant: Textron Innovations Inc.
Abstract: A proprotor system for a ducted aircraft convertible between a vertical takeoff and landing flight mode and a forward flight mode includes a plurality of proprotor blades and a duct surrounding the proprotor blades. The duct includes an adaptive geometry device movable into various positions including a hover position and a cruise position. One or more actuators coupled to the adaptive geometry device are configured to move the adaptive geometry device between the hover position and the cruise position based on the flight mode of the ducted aircraft, thereby improving flight performance of the ducted aircraft.
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公开(公告)号：US11479350B2
公开(公告)日：2022-10-25
申请号：US16907067
申请日：2020-06-19
Applicant: Textron Innovations Inc.
Abstract: A tip gap monitoring system for a ducted aircraft having a proprotor system including a duct and a plurality of proprotor blades includes sensors coupled to the proprotor system. The sensors are configured to detect one or more parameters of the proprotor system to form a plurality of sensor measurements. The tip gap monitoring system also includes a flight control computer in data communication with the sensors. The flight control computer includes a tip gap measurement module configured to determine a tip gap distance between the duct and the proprotor blades based on the sensor measurements.
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公开(公告)号：US11407504B2
公开(公告)日：2022-08-09
申请号：US16907079
申请日：2020-06-19
Applicant: Textron Innovations Inc.
Abstract: A tip gap control system for a ducted aircraft includes a flight control computer including an inner duct surface control module configured to generate an inner duct surface actuator command and a proprotor system in data communication with the flight control computer. The proprotor system includes a duct having active inner duct surfaces movable into various positions including a retracted position and an extended position. The proprotor system also includes proprotor blades surrounded by the duct and one or more actuators coupled to the active inner duct surfaces. The one or more actuators move the active inner duct surfaces between the various positions based on the inner duct surface actuator command, thereby controlling a tip gap between the proprotor blades and the duct.
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公开(公告)号：US11203421B1
公开(公告)日：2021-12-21
申请号：US16907087
申请日：2020-06-19
Applicant: Textron Innovations Inc.
Abstract: A proprotor system for a ducted aircraft includes a duct and proprotor blades surrounded by the duct. Each proprotor blade is rotatable about a respective pitch change axis. The proprotor blades are configured to change collective pitch about the pitch change axes. The proprotor blades are extendable along the pitch change axes into various positions including a retracted position and an extended position. The proprotor blades change between the retracted position and the extended position based on the collective pitch of the proprotor blades, thereby controlling a tip gap between the proprotor blades and the duct.
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公开(公告)号：US11634233B2
公开(公告)日：2023-04-25
申请号：US16908471
申请日：2020-06-22
Applicant: Textron Innovations Inc.
Inventor： Nicholas Ralph Carlson , Frank Brad Stamps , George Matthew Thompson , Jonathan Andrew Knoll
Abstract: In an embodiment, a duct for a ducted-rotor aircraft includes a hub, the hub including a rotor and one or more motors configured to drive the rotor. The duct also includes a duct ring that defines an opening surrounding at least a portion of the hub. The duct also includes a plurality of stators that extend outward from the hub. The duct also includes at least one battery electrically coupled to the rotor and configured to power the one or more motors.
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