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, and a winch mounted to the chassis. The winch includes a reel and a motor. The reel has a line wound thereon, the line having a free end. The reel includes a circumferential channel in which a wound portion of the line is wound onto the reel. The circumferential channel includes an inner portion, an outer portion, and a passage connecting the inner portion and the outer portion. The motor is operable to rotate the reel under control of the control system to thereby cause the line to wind onto and off of the reel, thereby causing the free end of the line to raise and lower.

Disclosed herein is a drone docking station for deposit of items/goods delivered by a drone to a secured receptacle. Items can be delivered to a receptacle at a curb, mailbox, post, porch, mobile units, and window for a multi-parcel receptacle with a set of drawers with hot and cold sections in the station that has a specific residential/commercial address with various optional features. Features include communication systems between the station and drone; security; hot and cold temperature control and preservation of the goods before and after delivery; battery charging and exchange station; a collector to identify explosive materials, anthrax, etc.; ultraviolet system to eradicate disease, virus and harmful materials; an ozone applicator to eradicate disease, virus and harmful materials; weather monitoring; tag and track of vehicles and packages; facial recognition camera and software for pets and humans; and local two-way speakers; LED lights that strobe flash, and a flood light.

A mobile ground power unit includes a housing in which an engine and an electric generator are disposed. The housing features a canopy having an outer wall facing outside. The outer wall has a single piece covering an upper side of the engine and extending downwards along at least two different vertical sides of the ground power unit. The canopy has an inner wall facing inside. The inner wall features a horizontal area covering the upper side of the engine and is extending from the horizontal area downwards along the at least two different vertical sides. The inner wall and the outer wall define a hollow space between each other. The canopy has an integrated ducting system with an inlet opening within the outer wall of the canopy, whereby the hollow space constitutes an air channel for exchanging fluid between the inside and the outside of the housing.

A mobile ground power unit has a housing in which an engine and an electric generator are disposed. The housing features at least one rotor molded or rotor cast component the housing features at least one rotor molded or rotor cast component that serves as an outer shell or part of the outer shell of the housing, whereby the housing features as the at least one rotor molded or rotor cast component one of a canopy covering at least the upper side of the engine and/or the generator a cable tray arranged sideways in relation to the engine and/or the electric generator.

An aircraft ground support equipment, GSE, unit for externally accessing video data from an aircraft video surveillance system, AVSS. The GSE unit constitutes a back-up AC power supply for the aircraft's AVSS and comprises a power output connector for connecting a power cable to a ground connection panel on the outside of the aircraft. AC power is supplied either by a rechargeable battery through a converter, or by mains power plugged into the GSE unit. A power source selection switch is switched to route either battery power or external power to the aircraft dependent on factors including battery status, presence of power at the external power connector and presence of power in the aircraft. Video data from the AVSS can thus be streamed out, even in the absence of aircraft power, for example to a portable personal computer.

An aircraft ground support equipment, GSE, unit for externally accessing video data from an aircraft video surveillance system, AVSS. The GSE unit constitutes a back-up AC power supply for the aircraft's AVSS and comprises a power output connector for connecting a power cable to a ground connection panel on the outside of the aircraft. AC power is supplied either by a rechargeable battery through a converter, or by mains power plugged into the GSE unit. A power source selection switch is switched to route either battery power or external power to the aircraft dependent on factors including battery status, presence of power at the external power connector and presence of power in the aircraft. Video data from the AVSS can thus be streamed out, even in the absence of aircraft power, for example to a portable personal computer.

A modular roadway structure that includes a body portion including a bottom surface and a top surface. The bottom surface is configured to be positioned on a surface, and the top surface is formed with a predetermined textured pattern for defining a predetermined coefficient of friction across the top surface.

A modular roadway structure that includes a body portion including a bottom surface and a top surface. The bottom surface is configured to be positioned on a surface, and the top surface is formed with a predetermined textured pattern for defining a predetermined coefficient of friction across the top surface.

A cone shaped docking and releasing mechanism provides rigid connection between a parent UAV and a sub UAV to form a spliced double unmanned aerial vehicle system with improved cruising duration ability by providing sub UAV battery with charging function. It comprises a parent UAV, a sub UAV and a docking mechanism with charging ports. The parent UAV and the sub UAV are connected with each other through the docking mechanism to form a double UAV system, the docking mechanism is a cone structure and comprises a charging output component connected with the parent UAV internal control system, a charging circuit connected with a sub UAV control system and a charging input component connected with the charging circuit.

A security kiosk which allows travelers to process themselves through a security checkpoint. An example security kiosk includes an identification device, communications circuitry, a security scanner for examining a traveler and items accompanying the traveler, and a processor for obtaining identification information from the traveler using the identification device, for connecting to a host computer system using the communications circuitry, for determining whether the traveler has previously checked in from the host computer system, for checking in the traveler when the traveler has not previously checked in, for reading a check-in document when the traveler has previously checked in, and for operating the security scanner.