A high current and RPM-capable slip ring assembly for use in a selected application for transferring electricity between an exterior environment and an interior environment that includes multiple electrical conduction assemblies with each having a fixed exterior electrical connection disk and rotating interior electrical connection disk mounted around a non-electrically conducting spindle that has a central aperture and a central axle running through the center of the spindle with one end of the central axle connected to the selected application and the other end of the central axle connect to a supporting structure mount and an oiled porous/sintered disk sandwiched around the spindle between the interior and exterior electrical connection disks of each conduction assembly to allow easy rotation between each exterior electrical connection disk and each rotating interior electrical connection disk.

A propeller assembly includes a first and a second propellers. The first propeller includes a first propeller blade including a first propeller root, a first propeller tip opposite to the first propeller root, a first propeller pressure surface, and a first propeller suction surface opposite to the first propeller pressure surface. The second propeller includes a second propeller blade including a second propeller root, a second propeller tip opposite to the second propeller root, a second propeller pressure surface, and a second propeller suction surface opposite to the second propeller pressure surface. The first propeller tip is configured to extend obliquely along a span direction of the first propeller blade toward a side where the first propeller suction surface is located. The second propeller tip is configured to extend obliquely along a span direction of the second propeller blade toward a side where the second propeller pressure surface is located.

Unmanned aerial vehicles and frames thereof are disclosed. The unmanned aerial vehicle includes a frame and a control module. The frame includes a central frame, a first arm set, and a second arm set. Each of the first arm set and the second arm set includes a second arm assembly, a third arm assembly, and a first arm assembly. The first arm assembly is located between the second arm assembly and the third arm assembly. The first arm assembly includes a first rotor assembly. The second arm assembly includes a second rotor assembly. The third arm assembly includes a third rotor assembly. In an output direction of downward-propelling wind fields, one of a rotation plane of the first rotor assembly, a rotation plane of the second rotor assembly, and a rotation plane of the third rotor assembly is located at a different position from the other two.

Sounds are generated by an aerial vehicle during operation. For example, the motors and propellers of an aerial vehicle generate sounds during operation. Disclosed are systems, methods, and apparatus for actively adjusting the position of one or more propeller blade treatments of a propeller blade of an aerial vehicle during operation of the aerial vehicle. For example, the propeller blade may have one or more propeller blade treatments that may be adjusted between two or more positions. Based on the position of the propeller blade treatments, the airflow over the propeller is altered, thereby altering the sound generated by the propeller when rotating. By altering the propeller blade treatments on multiple propeller blades of the aerial vehicle, the different sounds generated by the different propeller blades may effectively cancel, reduce, and/or otherwise alter the total sound generated by the aerial vehicle.

A power system includes a speed reducer, and a first turboshaft engine and a second turboshaft engine configured to drive the speed reducer. The speed reducer includes an output shaft. The first turboshaft engine is mounted on a first side of the speed reducer, the second turboshaft engine is mounted on a second side of the speed reducer, and the first turboshaft engine and the second turboshaft engine are arranged symmetrically about the output shaft.

The present invention discloses an autonomous aerial vehicle system to provide a plurality of autonomous delivery vehicle, such as drone with a weight carrying capacity. The components of drone are disposed in the frisbee like shell which facilitates to take flight in the same manner and capacity as of a frisbee. The drone provides 360-degree rotation and the pioneering velocity driven movement capabilities. The system further comprises a management server in communication with the plurality of autonomous aerial vehicle via a wireless network to schedule a flight plan for the plurality of autonomous aerial vehicle. Each autonomous aerial vehicle comprises a control module in communication with the management server is configured to operates the autonomous aerial vehicle according to the flight plan data. The control module receives data comprising position data, battery status data, location data of the aerial vehicle to aid the autonomous vehicle to execute the flight plan.

An aerial vehicle is provided including rotor units connected to the aerial vehicle, and a control system configured to operate at least one of the rotor units. The rotor unit includes rotor blades, wherein each rotor blade includes a surface area, and wherein an asymmetric parameter is defined, at least in part, by the relationship between the surface areas of the rotor blades. The value of the asymmetric parameter is selected such that the operation of the rotor unit: (i) moves the rotor blades such that each rotor blade produces a respective vortex and (ii) the respective vortices cause the rotor unit to produce a sound output having an energy distribution defined, at least in part, by a set of frequencies, wherein the set of frequencies includes a fundamental frequency, one or more harmonic frequencies, and one or more non-harmonic frequencies having a respective strength greater than a threshold strength.

An unmanned aerial vehicle is described herein. The unmanned aerial vehicle includes a fuselage body, a lift mechanism coupled to the fuselage body, and a depth sensing and obstacle avoidance system coupled to the fuselage body. The depth sensing and obstacle avoidance system includes a platform assembly, a pair of stereovision cameras coupled to a platform assembly, and a motor assembly coupled to the fuselage body and to the platform assembly. The platform assembly includes a support member extending between a first end and an opposite second end along a longitudinal axis. The pair of stereovision cameras includes each stereovision camera positioned at an opposite end of the support member. The motor assembly is configured to rotate the platform assembly with respect to the fuselage body about a rotational axis perpendicular to the longitudinal axis of the platform assembly.

A mobile robot and drone device configured to dynamically allocate one or more task objectives and handling objectives, the mobile robot and drone device systematically couples to one another creating a hybrid robot-drone. The robot and drone array are utilized to work and obtain target objects in an environment, wherein the mobile robot and drone device comprise robotic arms and legs comprising propulsion drive wheels managed accordingly by AI system components including; an adaptive robot control system, an autonomous coupling system and an autonomous charging system configured with processors, and subsystems including; user interface, Cloud-Based Analysis and Data Usage Network, a sensor I/O devices including; LIDAR, RADAR, an altitude gyroscope sensors and cameras for scanning surrounding objects in an environment, and an identifier scanning system configured for identifying users, mobile robots, drone devices and target objects in a work environment and in a game environment. The work environment can include a consigned robot and drone array to work inside a cargo vehicle to gather cargo boxes and packages for delivery, and the array of working mobile robot and subsequently the drone device transports the boxes and packages by a flight plan and by a land-based drone device drive mode in flight restricted zones, and the game environment includes real-time gameplay, virtual reality and augmented E Sports game platforms.

To provide an unmanned aerial vehicle that eliminates or minimizes the laboriousness involved in optimal pitch adjustment of propellers while eliminating or minimizing complexity and instability in airframe structure and/or flight programs. This object is solved by an unmanned aerial vehicle that is provided with a plurality of rotors and that includes: a center frame that is a central portion of an airframe of the unmanned aerial vehicle; and a plurality of arms extending radially from the center frame in plan view. A plurality of motors that are driving sources of the respective rotors are provided in the center frame. The plurality of rotors are supported by the respective arms. Each arm of the arms has a hollow cylindrical structure. A motive power transmission member configured to transmit a driving force of each motor of the motors to the each rotor is provided in the each arm.