Abstract: A system for selecting an unmanned aerial vehicle for executing a certain mission from a plurality of unmanned aerial vehicles that are available to perform the mission and for charging the battery of the selected vehicle with a specific abnormal charging profile, that includes a landing platform, an electric charger, a database stored on a memory means that includes information regarding past charges including past abnormal charges of the vehicles, a computer processing controller for controlling the charger and for determining the specific abnormal charging profile to charge the selected vehicle. The computer processing controller selects the selected vehicle from the plurality of vehicles that are available to perform the mission according to the information of past charges including past abnormal charges of the vehicles.

Abstract: A landing system for an unmanned aerial vehicle that includes a flat platform having a central hole that serves as a landing board, a lifting board on which a package can be placed that is positioned horizontally in the central hole, a lifting mechanism for lifting up and lower down the lifting board, a rotatable ring that surrounds the enteral hole and embedded in the flat platform in such a way that it can be leveled with the flat platform, and a motor for rotating the rotatable ring. The unmanned aerial vehicle can be positioned on the rotatable ring in such a way that the it can be horizontally rotated by the rotatable ring.

Abstract: A system for receiving a package from an unmanned aerial vehicle that includes a landing pad comprises a flat platform with a central hole, an elevating subsystem comprises a lifting board and a lifting mechanism, and a compartments subsystem comprises plurality of compartments, one above the other, each of which has a pushing rod with an actuator. The flat platform is suitable for the aerial vehicle to land on it. The lifting board is positioned in the central hole in such a way that the lifting board can be leveled with the flat platform when the aerial vehicle is landing, and the lifting board is suitable to the aerial vehicle to place the package on it. The lifting mechanism can lift up and lower down the lifting board that can stop in front of each compartment and the pushing rod can push the package to the compartment.

Abstract: A system for receiving a package from an unmanned aerial vehicle that includes a landing pad comprises a flat platform with a central hole, an elevating subsystem comprises a lifting board and a lifting mechanism, and a compartments subsystem comprises plurality of compartments, one above the other, each of which has a pushing rod with an actuator. The flat platform is suitable for the aerial vehicle to land on it. The lifting board is positioned in the central hole in such a way that the lifting board can be leveled with the flat platform when the aerial vehicle is landing, and the lifting board is suitable to the aerial vehicle to place the package on it. The lifting mechanism can lift up and lower down the lifting board that can stop in front of each compartment and the pushing rod can push the package to the compartment.

Abstract: An electrical communication system for unmanned aerial vehicle that includes conductive contact surfaces with magnets that are attached to a landing platform, and conductive pin systems that are attached to the vehicle. Each conductive pin system includes a conductive pin that its lower end is made of a magnetizing material, and its upper end is connected to the controller and the battery of the vehicle. The conductive pin systems includes a main body, that is attached to the vehicle, with a hole inside which the conductive pin is penetrated, a nut assembled on the upper end of the pin, a spring that is wounded on the pin between the nut and the main body so that the spring pushes upwards the pin, and a cable connector that is connected to the upper end of the pin to enable electrical connection with the controller and the battery.