A quick release propeller for model airplanes is disclosed including two or more blades mounted to a hub. For each blade, the hub includes a slot and a shoulder. Each blade includes a base portion having pins which slide into the slot in the hub. The slots are curved which prevents the blades from being removed unless they are rotated at predefined threshold angle with respect to the hub.

A system and method of conducting a drone race or game in a contained area is disclosed herein. The system may also include cameras attached to the drones and the video feed from the camera is transmitted to a computing device used to control the drone and to display the video feed. The system may also use computing devices and monitors to display the video feeds from the cameras attached to the drones. The system may also be configured as a game with information points.

A dual-mode vehicle, wheels for the vehicle, and a method of transitioning the vehicle from a land mode to a flight mode. In the land mode, the method includes rotating a pair of spaced wheel arms about a central pivot to lower a body of the dual-mode vehicle to a ground surface. Each wheel arm extends from the central pivot to a wheel. The method also includes rotating the central pivot about a longitudinal vehicle axis to raise the wheel arms and the wheels above the ground surface. After raising the wheel arms and wheels above the ground surface, the method includes rotating the wheel arms about the central pivot to position the wheels for use as rotors in the flight mode. In the flight mode, the method includes rotating the wheels in order to extract rotor blades positioned within the wheels to extend beyond the wheels.

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.

A motorized device capable of moving in a fluid and including one or more locomotor systems, each having at least one drive assembly linked to at least one locomotion member and a motor controlled by a voltage. The frequency of a reciprocating motion of the drive assembly matches the resonant frequency of the locomotion member linked to a non-movable portion by at least one prestrained elastic member. The instantaneous amplitude of the reciprocating motion of the drive assembly is adjusted to control the average position and the maximum amplitude of the reciprocating motion of the locomotion member. The drive assembly includes at least one speed reducer for reducing the speed of rotation of the motor. When the motor is operating at its maximum mechanical power, the speed of rotation transmitted to the at least one locomotion member is reduced to match the resonance frequency.

Rotor flight vehicle includes a first rotor, a power unit, a transmission from the power unit to the first rotor, wherein said transmission comprises at least one belt, a group of rotational axes, at least one power output axle connected to the power unit and at least one rotor axle connected to said first rotor, the belt is applied to the power output axle, the power output axle is concentric with a rotational axis, the belt transmits power to the rotor axle, the rotor axle is concentric with a rotational axis, wherein consecutive rotational axes of the group of rotational axes extend in a relation to each other such that the angle between them is in the range of 80-100 degrees, wherein the belt has a maximal torsion of 80-100 degrees, in the belt's transition between two respective consecutive rotational axes of the group of rotational axes.

The obstacle detection assembly is provided for a rotary wing drone, and comprises an obstacle detection device having a motorized detection rotating support configured to be fastened on the drone, and an obstacle detection unit carried by the detection rotating support, the obstacle detection unit bearing at least one obstacle detection sensor and having a line of sight, and an orientation module configured to command the detection rotating support so as to orient the line of sight of the obstacle detection unit as a function of the movement direction of the drone bearing the detection rotating support.

A remote controller includes a remote controller body including a control device configured to receive a remote-control command, a holding mechanism configured to hold a mobile terminal, and a connecting mechanism connected between the remote controller body and the holding mechanism. The holding mechanism is movably connected to the remote controller body via the connecting mechanism and is configured to move relative to the remote controller body to be in an extended state or in a contracted state.

There is provided a control device including an image display unit configured to acquire, from a flying body, an image captured by an imaging device provided in the flying body and to display the image, and a flight instruction generation unit configured to generate a flight instruction for the flying body based on content of an operation performed with respect to the image captured by the imaging device and displayed by the image display unit.

The present invention relates to a device for supplying electrical power to a wired system for a drone (1). The device according to the invention includes at least one power converter (4) on the ground and one power converter (2) at the level of the drone (1), regulation at the level of the converter on the ground ensures that the output voltage of the power converter (4) on the ground increases when the output current of the power converter (4) on the ground increases. The method according to the invention is intended for all wired drones, the wire (3) of which is used to supply electrical power to the drone (1).