Fixed-wing short-takeoff-and-landing aircraft and related methods

    公开(公告)号:US11472546B2

    公开(公告)日:2022-10-18

    申请号:US16799393

    申请日:2020-02-24

    Inventor: Tony Shuo Tao

    Abstract: Fixed-wing short-takeoff-and-landing aircraft and related methods. The aircraft comprise an airframe comprising a rear wing assembly and a forward wing assembly positioned forward of the rear wing assembly, a rear plurality of blowing rotor assemblies operatively coupled to the rear wing assembly that are configured to blow air across the rear wing assembly to induce lift in the rear wing assembly, and a forward plurality of blowing rotor assemblies that are operatively coupled to the forward wing assembly and configured to blow air across the forward wing assembly to induce lift in the forward wing assembly. The methods comprise inducing lift in a forward wing assembly by blowing air across the forward wing assembly with a forward plurality of blowing rotor assemblies and inducing lift in a rear wing assembly by blowing air across a rear wing assembly with a rear plurality of blowing rotor assemblies.

    FAULT-TOLERANT POWER DISTRIBUTION WITH POWER SOURCE SELECTION IN A VEHICLE

    公开(公告)号:US20220250759A1

    公开(公告)日:2022-08-11

    申请号:US17457378

    申请日:2021-12-02

    Abstract: A vehicle is provided that includes a basic structure; and coupled to the basic structure, a plurality of power sources, a propulsion system and power distribution circuitry. The propulsion system includes a plurality of electric motors configured to power a plurality of propulsors to generate propulsive forces that cause the vehicle to move. The power distribution circuitry is configured to deliver direct current electric power from the plurality of power sources to the plurality of electric motors. The power distribution circuitry electrically couples the plurality of power sources to the plurality of electric motors in an interleaved topology in which electric motors of the plurality of electric motors are alternately, electrically coupled to power sources of the plurality of power sources. Each of the electric motors in the interleaved topology is electrically coupled to a different one of the power sources than immediately adjacent ones of the electric motors.

    AIRCRAFT SENSOR SYSTEM SYNCHRONIZATION

    公开(公告)号:US20220189318A1

    公开(公告)日:2022-06-16

    申请号:US17457621

    申请日:2021-12-03

    Abstract: A method, apparatus, system, and computer program product for operating an aerial imaging system. A first altitude of a first aircraft is determined, by a computer system, using first images of a key point generated by the first aircraft during a flight and stereo depth triangulation. The first altitude is compared with a second altitude of a second aircraft determined by the second aircraft, by the computer system, to form a comparison. An offset between the first altitude and the second altitude is determined, by the computer system, using the comparison. At least one of the first altitude or the second altitude is adjusted based on the offset. A plurality of images of a region from the first aircraft at the first altitude and from the second aircraft at the second altitude is obtained.

    ROTOR FOR ELECTRIC MOTOR
    186.
    发明申请

    公开(公告)号:US20220181931A1

    公开(公告)日:2022-06-09

    申请号:US17505461

    申请日:2021-10-19

    Abstract: In an example, a rotor for an electric motor includes an inner hub, an outer rim, and a plurality of slats. Each slat of the plurality of slats has a first end at the inner hub and a second end at the outer rim. The rotor is configured to drive a plurality of propeller blades that provide force for an aerial vehicle. Additionally or alternatively, a rotor for an electric motor includes a housing that includes a first retaining structure and a second retaining structure that are configured to apply a force that is directed radially outward against a magnet to hold the magnet against the housing. The rotor is configured to drive a plurality of propeller blades that provide force for an aerial vehicle.

    Retractable propulsor assemblies for vertical take-off and landing (VTOL) aircraft

    公开(公告)号:US11305872B2

    公开(公告)日:2022-04-19

    申请号:US16524547

    申请日:2019-07-29

    Inventor: Olivier Cornes

    Abstract: Retractable propulsor assemblies for aircraft are described that generate lift during vertical take-off, hover, and vertical landing. The retractable propulsor assemblies are deployed from a compartment in a fuselage of the aircraft to transition the aircraft into vertical flight, and are stowed in the compartment during cruise flight to reduce aerodynamic drag on the aircraft. One embodiment comprises a method of operating a VTOL aircraft. The method comprises deploying the retractable propulsor assembly from the compartment of the fuselage to provide the lift for vertical flight. The method further comprises transitioning the VTOL aircraft from the vertical flight to cruise flight, and stowing the retractable propulsor assembly in the compartment during the cruise flight to reduce the aerodynamic drag on the VTOL aircraft.

    Propulsor system with integrated passive cooling

    公开(公告)号:US11258333B2

    公开(公告)日:2022-02-22

    申请号:US16524895

    申请日:2019-07-29

    Abstract: Propulsors (e.g., an electric motor mechanically coupled to a rotor) are described that passively cool the electric motors via an airflow path through the electric motor and out of the rotors. One embodiment comprises a method of cooling an electric motor. The method comprises operating the electric motor of a propulsor for an aircraft to rotate a rotor of the propulsor, where the rotor has one or more air outlets, and where the electric motor has a housing that includes one or more air inlets in fluid communication with the one or more air inlets. The method further comprises generating, by rotating the rotor using the electric motor, an airflow through the electric motor from the one or more air inlets to the one or more air outlets to cool the electric motor.

    CAUSING A ROBOT TO EXECUTE A MISSION USING A BEHAVIOR TREE AND A LEAF NODE LIBRARY

    公开(公告)号:US20220035339A1

    公开(公告)日:2022-02-03

    申请号:US17148093

    申请日:2021-01-13

    Abstract: A method is provided for causing one or more robots to execute a mission. The method includes determining a behavior tree in which the mission is modeled, and causing the one or more robots to execute the mission using the behavior tree and a leaf node library. The behavior tree is expressed as a directed tree of nodes including a switch node, a trigger node representing a selected task, and action nodes representing others of the tasks. The switch node is connected to the trigger node and the action nodes in a parent-child relationship in which the trigger node and the action nodes are children of the switch node. The trigger node is a first of the children that, when ticked by the switch node, returns an identifier of one of the action nodes to trigger the switch node to next tick the one of the action nodes.

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