The present invention relates to an unmanned helicopter. The unmanned helicopter comprises a fuselage. Two arms are respectively disposed on each of two sides of the fuselage. One end of each arm is connected to the fuselage, and the other end of each arm is provided with a rotor having a motor. The unmanned helicopter is characterized in that: the four arms are grouped into a front group and a rear group, two arms in each group are disposed symmetrically along the axis of the fuselage, the fuselage is movably connected to each arm, an angle between a length direction of any one of the two arms in each group and a corresponding rotation axis is an angle r, an angle between the rotation axis and a horizontal surface of the fuselage is an angle a, and an angle between a projection line of the rotation axis on the horizontal surface of the fuselage and the axis direction that extends outward the fuselage is an angle b. By ingeniously selecting values of the angle a, the angle r and the angle b, the structure of the unmanned helicopter in a folded state is very compact, thereby effectively saving space.

An unmanned aerial vehicle (UAV) includes a central body, a plurality of arms extending out from the central body, and a plurality of propulsion units. Each arm of the plurality of arms includes a stem portion including a stem interior space, one or more branch portions each including a branch interior space, and a joint connecting the stem portion and the one or more branch portions. The joint includes a joint interior space and is configured to move the one or more branch portions relative to the stem portion. Each propulsion unit is attached to a corresponding arm of the plurality of arms. The stem interior space, the branch interior space, and the joint interior space are configured to provide an internal passageway to permit electrical routing between the central body and the plurality of propulsion units.

An unmanned aerial vehicle (UAV) includes a central body, a plurality of arms extending out from the central body, and a plurality of propulsion units. Each arm of the plurality of arms includes a stem portion including a stem interior space, one or more branch portions each including a branch interior space, and a joint connecting the stem portion and the one or more branch portions. The joint includes a joint interior space and is configured to move the one or more branch portions relative to the stem portion. Each propulsion unit is attached to a corresponding arm of the plurality of arms. The stem interior space, the branch interior space, and the joint interior space are configured to provide an internal passageway to permit electrical routing between the central body and the plurality of propulsion units.

An unmanned aerial vehicle according to certain embodiments generally includes a chassis, a power supply mounted to the chassis, a control system operable to receive power from the power supply, at least one rotor operable to generate lift under control of the control system, a line having one end coupled to the chassis and an opposite free end, wherein the free end is positioned below the chassis, and a severing mechanism operable to sever the line under control of the control system.

A collapsible flying device is provided having a housing including first and second housing sections forming an enclosure, and a motorized assembly that includes a drive motor and a drive shaft driven by the drive motor. The drive shaft matingly receives the first housing section and is coupled to the second housing section, wherein operation of the drive motor drives the drive shaft to move the first housing section from a closed position adjacent the second housing section to an open position spaced from the second housing section. A rotor hub is rotatingly driven by the drive motor. At least two rotor blades are coupled thereto and positioned within the enclosure in a collapsed position when the first housing section is in the closed position, and extend beyond the enclosure in an expanded position when the first housing section is in the open position.

A collapsible flying device is provided having a housing including first and second housing sections forming an enclosure, and a motorized assembly that includes a drive motor and a drive shaft driven by the drive motor. The drive shaft matingly receives the first housing section and is coupled to the second housing section, wherein operation of the drive motor drives the drive shaft to move the first housing section from a closed position adjacent the second housing section to an open position spaced from the second housing section. A rotor hub is rotatingly driven by the drive motor. At least two rotor blades are coupled thereto and positioned within the enclosure in a collapsed position when the first housing section is in the closed position, and extend beyond the enclosure in an expanded position when the first housing section is in the open position.

An unmanned aerial vehicle (UAV) 1 of the vertical take-off and landing (VTOL)-type that can be launched from a launcher tube 2 is provided. A launcher 2 for launching the UAV 1 is also provided. The UAV 1 comprises a housing 10 and a transition mechanism 100 for transitioning the UAV 1 between a collapsed configuration for stowing the UAV 1 in a launcher tube 21 and a flight configuration. The housing 10 and the transition mechanism 100 are configured so that one or more rotors 12a-d that, in use, are connected to the transition mechanism 100 are located substantially within the housing 10 in the collapsed configuration and outside the housing 10 in the flight configuration. The launcher 2 comprises a hollow tube 21 for receiving a UAV 1 in a collapsed configuration and a trigger mechanism 26 for triggering a propulsion mechanism for propelling the UAV 1 out of an end of the hollow tube 21. A system comprising both the UAV 1 and the launcher 2, and a kit of part which, when assembled, provide the UAV 1 are also provided.

An unmanned aerial vehicle (UAV) 1 of the vertical take-off and landing (VTOL)-type that can be launched from a launcher tube 2 is provided. A launcher 2 for launching the UAV 1 is also provided. The UAV 1 comprises a housing 10 and a transition mechanism 100 for transitioning the UAV 1 between a collapsed configuration for stowing the UAV 1 in a launcher tube 21 and a flight configuration. The housing 10 and the transition mechanism 100 are configured so that one or more rotors 12a-d that, in use, are connected to the transition mechanism 100 are located substantially within the housing 10 in the collapsed configuration and outside the housing 10 in the flight configuration. The launcher 2 comprises a hollow tube 21 for receiving a UAV 1 in a collapsed configuration and a trigger mechanism 26 for triggering a propulsion mechanism for propelling the UAV 1 out of an end of the hollow tube 21. A system comprising both the UAV 1 and the launcher 2, and a kit of part which, when assembled, provide the UAV 1 are also provided.

An unmanned aerial vehicle (UAV) adapted for transit in and deployment from a projectile casing is provided. The UAV includes a wing assembly coupled to the projectile casing and the wing assembly moveable between a closed position and a deployed position. The UAV further includes a propulsion system including at least one rotor disposed on the wing assembly to generate lift, wherein in the closed position, the wing assembly is substantially integral with the projectile casing and in the deployed position, the wing assembly is extended outwards from the projectile casing.

A multi-rotor unmanned aerial vehicle (UAV) includes a central body, a plurality of branch members connected to the central body, each branch member configured to support a corresponding actuator assembly, a communication module disposed within the central body and configured to establish a communication channel between the UAV and a remote device, and an indicator light disposed on one of the plurality of branch members. The indicator light is configured to indicate whether the communication channel is established.