A small unmanned aircraft is disclosed. By delicate design and limitation of the specification, the small unmanned aircraft is enabled to fly by solar energy produced from a solar cell module. Preferably the small unmanned aircraft has a dimension less than 60 cm60 cm.

The present disclosure relates to the manufacture of battery packs/assemblies and more specifically, the manufacture of battery packs/assemblies for use in aircraft. A lightweight battery assembly with cell compression and/or pressure management system is disclosed herein. The battery assembly can employ a composite battery enclosure impregnated with a plurality of primary fibers that define a direction of the composite battery enclosure's tensile strength. A cell-stack can be positioned in the composite battery enclosure such that the composite battery enclosure applies a predetermined pressure upon the cell-stack to compress the cell-stack in the direction of the composite battery enclosure's tensile strength.

Provided is a system comprising: a management unit that manages a plurality of battery packs, which are connected in parallel to a bus to which a power generation unit and a load are connected, to have the plurality of battery packs being alternately discharged so that a voltage difference between a battery pack with a highest voltage and a battery pack with a lowest voltage among the plurality of battery packs is not greater than a voltage threshold.

Provided is a system comprising: a management unit that manages a plurality of battery packs, which are connected in parallel to a bus to which a power generation unit and a load are connected, to have the plurality of battery packs being alternately discharged so that a voltage difference between a battery pack with a highest voltage and a battery pack with a lowest voltage among the plurality of battery packs is not greater than a voltage threshold.

A stratospheric airship includes a nonrigid balloon equipped with a solar generator arranged on the upper part of the nonrigid balloon intended to be illuminated in flight by the sun, the airship comprising: at least one device for managing the position of the centre of gravity of the airship; at least one device for stabilizing the attitude of the airship; and a module for the coupled control of the devices, configured to control the airship, when the speed of travel of the airship with respect to the surrounding air is below a first threshold (S1) and/or the temperature of the solar generator is above a second threshold (S2), in such a way that it rotates by substantially half a turn about its longitudinal axis (AL), so as to protect the solar generator from illumination by the sun.

The present invention relates to a mobile communication terminal having an unmanned air vehicle, the mobile communication terminal being smart-phones, tablet-phones, or tablet-PCs which are carried by users and used for mobile communication, and the unmanned air vehicle being kept in the mobile communication terminal or in various mobile communication terminals that may be developed in the future, and being capable of navigating and performing various operations according to a control using the mobile communication terminal. The present invention provides a mobile communication terminal having an unmanned air vehicle, which includes: an unmanned air vehicle including a flying means, a wireless communication means and an image capturing means; and a mobile communication terminal part including: a hangar part in which the unmanned air vehicle is kept; an unmanned air vehicle control means controlling the unmanned air vehicle to navigate and capture images through wireless communication with the unmanned air vehicle; and a manipulation part through which a control command of a user is input to the unmanned air vehicle control means.

Unmanned vehicles can be terrestrial, aerial, nautical, or multi-mode. Unmanned vehicles may efficiently accomplish tasks by autonomously charging or replacing its power source.

A system is presented. The system comprises sunlight sensors and GPS receivers in a region, an aerial vehicle, a solar panel, and a flight plan generator. The aerial vehicle is within the region. The aerial vehicle has a rechargeable battery. The solar panel is physically connected to the aerial vehicle and operably connected to the rechargeable battery. The flight plan generator is configured to create a flight plan within the region for the aerial vehicle based on measurements from the sunlight sensors within the region.

The present invention is a variable geometry aircraft that is capable of morphing its shape from a symmetric cross-section buoyant craft to an asymmetric lifting body and even to a symmetric zero lift configuration. The aircraft may include variable span, length, and camber. The variability of the structure and the flexible envelope allows the aircraft to adjust its aspect ratio along with the camber of the upper and/or lower surfaces to achieve varying shapes. This transformation changes both the lift and drag characteristics of the craft and may be accomplished while the craft is airborne.

A solar power system comprising a solar panel, a load, and a battery pack group. The load comprising an electric motor operatively coupled with a propeller. The battery pack group comprises one or more voltage controllable battery packs, each of said one or more voltage controllable battery packs comprising a plurality of battery cells. The voltage controllable battery packs having a rigid printed circuit board electrically coupled with the plurality of battery cells, the rigid printed circuit board including an interconnect connector to electrically couple with a corresponding interconnect connector of a second voltage controllable battery pack.