System and method for orbital collision screening

    公开(公告)号:US12085642B2

    公开(公告)日:2024-09-10

    申请号:US17357161

    申请日:2021-06-24

    Applicant: LeoLabs, Inc.

    CPC classification number: G01S13/933 B64G1/242 B64G1/52 B64G1/66

    Abstract: A method for orbital collision screening comprising, obtaining trajectory information of a plurality of objects moving on predictable paths. For each one of the plurality of objects, based upon respective trajectory information of the one of the plurality of objects, computing, a respective spatial descriptor of the path of the one of the plurality of objects, and storing the respective spatial descriptors of each of the plurality of objects in a data structure. Subsequently obtaining trajectory information of a further object, and based upon the trajectory information of the further object, computing a spatial descriptor of the path of the further object. Making first comparisons of the spatial descriptor of the further object against the respective spatial descriptors of each of the plurality of objects stored in the data structure to determine whether each of these first comparisons indicates a possible collision risk. Based upon each of the first comparisons, if the first comparison indicates a possible collision risk, determining a result of a close approach determination between the respective trajectory information of the respective one of the plurality of objects and the trajectory information of the further object, and taking an action based on result of the close approach determination satisfying a predetermined threshold.

    Systems and methods for satellite constellation launch using air-launched vehicles

    公开(公告)号:US12024313B1

    公开(公告)日:2024-07-02

    申请号:US16998516

    申请日:2020-08-20

    Abstract: Systems and methods for calculating launch sites for a satellite constellation are provided. A carrier aircraft may be configured to launch a first satellite into the first orbit and a second satellite into the second orbit. In some embodiments, information about an accessible range of the aircraft may be received. Based on the received information, a geographical area that the aircraft can access without landing may be calculated. Using received information and the orbit parameters of the first orbit and the second orbit, a first launch site for launching the first satellite and a second launch site for launching the second satellite may be calculated. The first launch site may comprise a first geographical position and a first launch time, and the second launch site may comprise a second geographical position and a second launch time. Both launch sites may be within the calculated geographical area.

    Fail-safe vehicle rendezvous in case of total control failure

    公开(公告)号:US11987396B2

    公开(公告)日:2024-05-21

    申请号:US16914383

    申请日:2020-06-28

    CPC classification number: B64G1/646 B64G1/242

    Abstract: A system for controlling an operation of a vehicle to rendezvous with a target over a finite time horizon, wherein the vehicle and the target form a multi-object celestial system. A processor to formulate passive unsafe regions as passive safety constraints. The passive unsafe regions represents regions of space around the target guaranteeing collision trajectories with the target, in an event of total thruster failure. Update a controller having a model of dynamics of the vehicle with received data, and subject the updated controller to the passive safety constraints to generate control commands that produce a collision free rendezvous trajectory which avoids unsafe regions for the specified time period, guaranteeing a collision free trajectory with respect to the target in the event of the total vehicle thruster failure, so the vehicle does not collide with the target. Output the control commands to activate or not activate thrusters of the vehicle.

    REACTIONLESS STEERABLE PROPULSION VEHICLE - MESH DRIVE

    公开(公告)号:US20240116656A1

    公开(公告)日:2024-04-11

    申请号:US17958353

    申请日:2022-10-01

    CPC classification number: B64G1/409 B64G1/242 B64G1/28 F03G3/097

    Abstract: A drive is provided that comprises at least one pair of coaxial linear guides configured to counterrotate about a rotational axis and a pair of eccentric masses arranged and constrained for reciprocating movement along the coaxial linear guides. Each eccentric mass reciprocates from a first end to a second end and back again to the first end of its corresponding linear guide in a first period of time that is equal to a second period of time required for the corresponding linear guide to complete a full rotation. This results in a phenomenon by which the eccentric masses are constrained to one hemisphere of the circular sweep of the linear guides, producing an internally derived directional thrust. To steer the drive, one of several different mechanisms are used to differentiate the phases, angular momentums, and or displacement between the linear guides of the linear guide-and-piston subsystems.

    ATTACHMENT SYSTEMS FOR AUGMENTING SATELLITES
    10.
    发明公开

    公开(公告)号:US20240059430A1

    公开(公告)日:2024-02-22

    申请号:US18035570

    申请日:2021-11-05

    CPC classification number: B64G1/223 B64G1/242 B64G1/1007

    Abstract: Retrofittable satellite systems for an in-orbit host satellite comprising an enhancement module for adding a capability to the in-orbit host satellite, modifying the function of the in-orbit host satellite, and/or extending the function of the in-orbit host satellite. The in-orbit, retrofittable satellite system comprises a transfer vehicle for transferring the enhancement module from a first to a second location and a service vehicle for receiving the enhancement module from the transfer vehicle and installing the enhancement module on the in-orbit host satellite. In-orbit space situational awareness systems, comprising one or more in-orbit host satellites having one or more enhancement modules attached thereto, the enhancement modules comprising sensors such as satellite spatial location/position sensors, range sensors, navigation sensors, and/or proximity sensors for detecting other objects in-orbit, their location, speed, acceleration, orbital trajectory or the like, wherein the enhancement modules communicate to create a mesh network between the satellites.

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