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    Constructive Dynamic Interaction Between Energy Kite and Floating Platform
    1.
    发明申请
    Constructive Dynamic Interaction Between Energy Kite and Floating Platform 审中-公开

    公开(公告)号：US20200208608A1

    公开(公告)日：2020-07-02

    申请号：US16233767

    申请日：2018-12-27

    Applicant: X Development LLC

    Inventor： Fort Felker ,  Charles Joseph Nordstrom ,  Joel Fraser Atwater

    IPC: F03D5/00 ,  B63B35/44 ,  F03D13/25

    Abstract: An example method includes: determining a period of natural oscillation of a floating ground station in an airborne wind turbine with an aerial vehicle coupled to the ground station via a tether, and wherein each natural-oscillation period comprises forward and backward displacement of the floating ground station with respect to the aerial vehicle; and operating the aerial vehicle to fly in a substantially circular path with a looping period that matches the natural-oscillation period of the floating ground station, and a looping phase that aligns with the oscillation phase of the floating ground station such that movement of the aerial vehicle on a downstroke portion the circular path corresponds to forward displacement of the floating ground station, and movement of the aerial vehicle on an upstroke portion the circular path corresponds to reverse displacement of the floating ground station.

    Integrated Tether and Mooring with Floating Platform for Energy Kite
    3.
    发明申请
    Integrated Tether and Mooring with Floating Platform for Energy Kite 审中-公开

    公开(公告)号：US20180149137A1

    公开(公告)日：2018-05-31

    申请号：US15365249

    申请日：2016-11-30

    Applicant: X Development LLC

    Inventor： Charles Nordstrom ,  Fort Felker

    IPC: F03D13/25 ,  B64F3/02 ,  B64C39/02 ,  F03D9/00 ,  B63B35/50

    Abstract: Offshore airborne wind turbine systems with an aerial vehicle connected to an undersea anchor via a tether are disclosed. A floating landing platform may be coupled to the tether and be dragged along the surface of the water along with the tether. The landing platform may be designed such that the tether can freely pass through the platform, allowing the aerial vehicle to ascend, descend, move laterally, and in crosswind flight, without creating a significant tension load on landing platform. The landing platform may also include a tether drive mechanism that can actively move the tether through the platform, thus changing the platform's location along the length of the tether.

    Offshore Wind Kite with Seafloor Mooring
    5.
    发明申请
    Offshore Wind Kite with Seafloor Mooring 审中-公开

    公开(公告)号：US20180170537A1

    公开(公告)日：2018-06-21

    申请号：US15387261

    申请日：2016-12-21

    Applicant: X Development LLC

    Inventor： Brian Hachtmann ,  Fort Felker ,  Charles Nordstrom

    IPC: B64C39/02 ,  B63B35/50 ,  B63B21/50 ,  G05D1/06 ,  F03D9/00 ,  F03D9/32

    Abstract: The present disclosure relates to systems and methods for operating aerial vehicles in water-based locations. As an example, a system may include a plurality of landing stations. Each landing station of the plurality of landing stations is coupled to at least one of: another landing station or an underwater mooring point. The system also includes an aerial vehicle coupled to a tether mooring point by a tether. The aerial vehicle is configured to land on at least one landing station of the plurality of landing stations.

    Use of Wave Energy by Energy Kite and Floating Platform
    7.
    发明申请
    Use of Wave Energy by Energy Kite and Floating Platform 审中-公开

    公开(公告)号：US20200208607A1

    公开(公告)日：2020-07-02

    申请号：US16233763

    申请日：2018-12-27

    Applicant: X Development LLC

    Inventor： Fort Felker ,  Charles Joseph Nordstrom ,  Joel Fraser Atwater

    IPC: F03D5/00 ,  B63B35/44 ,  F03D13/25

    Abstract: An example method includes: determining wave data corresponding to a floating ground station of an airborne wind turbine, wherein an aerial vehicle is coupled to the floating ground station via a tether; determining, based on the wave data, an oscillation profile of the floating ground station; and operating the aerial vehicle to fly in a closed path with: (a) a looping period that matches the period of wave-influenced oscillation of the floating ground station, and (b) a looping phase that aligns with the oscillation phase of the floating ground station such that movement of the aerial vehicle on a downstroke portion of the closed path corresponds to forward displacement of the floating ground station, and movement of the aerial vehicle on an upstroke portion the closed path corresponds to reverse displacement of the floating ground station.

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