A vehicle includes a first rotor system having a rotor blade having an axis of rotation, a rotatable inboard drive component, and a rotatable outboard drive component. The first rotor system further includes a flexible closed loop component associated with each of the inboard drive component and the outboard drive component. Movement of the closed loop component can selectively cause at least one of rotation of the rotor blade about the axis of rotation and movement of the axis of rotation.

A propeller for an aircraft includes at least two blades, arranged about a central hub, which is coupled to at least one motor, driven by a power source. At least one blade is attached to at least one sleeve member, configured for being in an outer sliding connection to a first cylindrical element of the hub. An inner surface of each of the at least one sleeve member includes at least one projecting element, configured to be in a sliding connection with a corresponding at least one first recessed guide path, arranged in an outer surface of the first cylindrical element. Each of the at least one first recessed guide path circles at least partly around the first cylindrical element from a first position to a second position. Each of the at least one sleeve member positions its blade in an operational position when its, at least one, projecting element is positioned in its corresponding first position in its designated first recessed guide path of the first cylindrical element. Each of the at least one sleeve member positions its blade in a storage position when its, at least one, projecting element is positioned in its corresponding second position in its designated first recessed guide path of the first cylindrical element. A rotation of the first cylindrical element moves each of the at least one sleeve member thereabout along their first recessed guide path. An arrangement includes the propeller and a compartment configured to accommodate the propeller. An aircraft includes at least one wing and at least one propeller.

A propeller for an aircraft includes at least two blades, arranged about a central hub, which is coupled to at least one motor, driven by a power source. At least one blade is attached to at least one sleeve member, configured for being in an outer sliding connection to a first cylindrical element of the hub. An inner surface of each of the at least one sleeve member includes at least one projecting element, configured to be in a sliding connection with a corresponding at least one first recessed guide path, arranged in an outer surface of the first cylindrical element. Each of the at least one first recessed guide path circles at least partly around the first cylindrical element from a first position to a second position. Each of the at least one sleeve member positions its blade in an operational position when its, at least one, projecting element is positioned in its corresponding first position in its designated first recessed guide path of the first cylindrical element. Each of the at least one sleeve member positions its blade in a storage position when its, at least one, projecting element is positioned in its corresponding second position in its designated first recessed guide path of the first cylindrical element. A rotation of the first cylindrical element moves each of the at least one sleeve member thereabout along their first recessed guide path. An arrangement includes the propeller and a compartment configured to accommodate the propeller. An aircraft includes at least one wing and at least one propeller.

An air transport vehicle that capitalizes on the strengths and complexities of a fixed and rotary winged aircraft. The air transport vehicle comprises a body aerodynamically designed to avoid substantial drag. The vehicle has a plurality of rotors configured to generate vertical thrust with a rear rotor configured to generate forward thrust. Additionally, each of the rotors are connected to the fixed wing elements and the fixed wing is positioned about the center of mass of the fuselage. Furthermore, each of the rotors are positioned at a fixed tilt angle such that the stability of the vehicle is maintained in a number of different flight configurations.

According to one embodiment, a power transmission device including a housing for landing a vehicle, and a ferromagnetic material and a power transmission coil. An outer shape of a cross-section of the housing becomes larger from a top of the housing toward a bottom of the housing, the outer shape is a non-true circle, and the outer shape is similar to an inner shape of a frame provided in the vehicle. The ferromagnetic material is within the housing, the ferromagnetic material being continuous in an up-and-down direction of the housing. The power transmission coil is within the housing, the power transmission coil being configured to surround the ferromagnetic material.

A water level measurement system including: a water level gauge including a scale part which is installed to extend upward at a predetermined angle of inclination from a water surface; and an unmanned aerial vehicle including image capturing means for capturing the scale part from above and a plurality of rotary wings, and is also solved by a water level control system including the water level measurement system and water level adjustment equipment capable of adjusting an amount of water in a water area in which the water level gauge is installed, wherein the unmanned aerial vehicle includes the water level determining unit and water level control means for remotely operating the water level adjustment equipment through wireless communication, as well as a water level measurement method and a water level control method using the above systems.

Embodiments of unmanned, rotary wing drones are described herein that include an insect trap for luring and capturing mosquitoes or other insects. The drone can include a set of propulsion units, each having a motor and propeller, and that collectively provide sufficient lift when operating to allow the drone to fly. A flight controller can be used to send and receive information and control a flight of the drone according to a flight plan stored on the drone. The insect trap includes a funnel or other mechanism to allow only for one-way movement of an insect into a container. To lure the insect into the trap, ultraviolet light can be shone on high-surface titanium dioxide powder that is stored within a mesh bag. A battery or other power source can be used to power the various components, and solar panels can be used to charge the battery when the drone has landed.

A solar cell module for an unmanned aerial vehicle is disclosed. The solar cell module includes a carrier base and a solar cell unit. The carrier base is disposed on the unmanned aerial vehicle. The solar cell unit has a plurality of solar cells attached to the carrier body. A ratio of the power provided by the solar cell unit to the weight of the solar cell module is equal to or greater than 0.1 (W/g).

An assembly comprising a drone (1) and at least one releasable load (37) mounted on the drone, the drone comprising an on-board data processing system, the releasable load (37) comprising at least one sensor delivering a piece of information that can be used to ascertain the path of same and actuators for controlling flight control surfaces allowing it to be oriented as it falls, being linked to the drone (1) by an optical fibre (70), the load and the drone being arranged to exchange information via the optical fibre while the load is falling, the load transmitting data originating from said at least one sensor and the drone transmitting data for controlling the actuators, established taking into account that received from the load, in order to guide the load towards a predefined target.

A flight path generation method includes determining a plurality of photographing positions for a flight vehicle to photograph a subject based on a flight range of the flight vehicle and photographing position intervals, and generating a flight path of the flight vehicle that passes through the photographing positions.