PROPULSION ASSEMBLY
    3.
    发明公开
    PROPULSION ASSEMBLY 审中-公开

    公开(公告)号:US20240336366A1

    公开(公告)日:2024-10-10

    申请号:US18749764

    申请日:2024-06-21

    Abstract: A system can include a flight controller for an aircraft that includes an electric motor that drives blades with a variable pitch, where the flight controller receives a command to change a flight characteristic of the aircraft and creates a torque command and a revolutions per minute (RPM) command. The system can also include a propulsion assembly, where the propulsion assembly creates a current command based at least in part on the torque command and the RPM command, creates a blade pitch command based at least in part on the torque command and the RPM command, communicates the current command to the electric motor to change a mechanical output of the electric motor, and communicates the blade pitch command to blade actuators to control the pitch of the blades. The current command and the blade pitch command cause the blades of the aircraft to rotate at a predetermined RPM.

    Object detection using propeller noise

    公开(公告)号:US11858625B1

    公开(公告)日:2024-01-02

    申请号:US16448311

    申请日:2019-06-21

    CPC classification number: B64C39/024 B64C19/02 B64C27/46 G01S15/93 B64U2201/00

    Abstract: Disclosed are systems and methods to detect objects within an environment by an aerial vehicle. An aerial vehicle may detect objects within an environment based on propeller noises emitted by the aerial vehicle that are reflected back to the aerial vehicle by objects in the environment. The propeller noise may be noise that is generated during normal operation of one or more propellers. The propeller noise emitted by the propellers of the aerial vehicle propagates into the environment around the aerial vehicle and reflects off any objects within the environment. Because the noise generated by each propeller is distinguishable, sets of solutions (distance and all directions) may be computed for each propeller. The intersections of those sets of solutions is representative of the actual distance and direction of the object with respect to the aerial vehicle.

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