Self-contained mobile solar-powered escalator systems for aircraft entry comprising a security canopy and safety walls for protection, an electric cargo vehicle, an escalator, a lift system, exiting platform, leveler/stabilizers, heavy duty front and rear suspension, formal arriving platform, handrails, repair compartments, expandable waterproof and bulletproof canopy, distance light indicator, inflatable rubber bumper, and emergency brakes.

Systems and methods for providing access for workers to cell towers are disclosed. The system is useful on stealth cellular towers that do not have external ladders or climbing pegs for aesthetic reasons. The system may include a channel (e.g., a track) that may be permanently mounted to the cell tower and extends from a bottom of the cell tower to a top of the cell tower as well as a track-line (e.g., a chain, a belt, etc.) located within the channel such that the track-line acts as a loop running from the bottom of the cell tower to the top of the cell tower, and vice versa. A modular ladder with climbing pegs may be attached to the track-line and inserted into the channel such that the modular ladder may be pulled up the channel to the top of the cell tower by the track-line and then secured.

Systems and methods for providing access for workers to cell towers are disclosed. The system is useful on stealth cellular towers that do not have external ladders or climbing pegs for aesthetic reasons. The system may include a channel (e.g., a track) that may be permanently mounted to the cell tower and extends from a bottom of the cell tower to a top of the cell tower as well as a track-line (e.g., a chain, a belt, etc.) located within the channel such that the track-line acts as a loop running from the bottom of the cell tower to the top of the cell tower, and vice versa. A modular ladder with climbing pegs may be attached to the track-line and inserted into the channel such that the modular ladder may be pulled up the channel to the top of the cell tower by the track-line and then secured.

The present invention relates to an effective gravity control device which is installed to have a falling space to be a vertical space in a building, and which implements a zero gravity, microgravity, low gravity, or pseudogravity state of an internal module mounted in a moving external module. An example effective gravity control device includes: a dual module including an external module and an internal module; an actuator installed at the upper side of a falling space in a space for controlling and monitoring a change in gravity applied to the dual module, and which moves the external module so that, according to a control signal, the external module has at least one physical quantity; and a sliding frame which is installed in a space at the lower side of the falling space and provides a path for taking the dual module into/out from the falling space.

The present invention relates to an effective gravity control device which is installed to have a falling space to be a vertical space in a building, and which implements a zero gravity, microgravity, low gravity, or pseudogravity state of an internal module mounted in a moving external module. An example effective gravity control device includes: a dual module including an external module and an internal module; an actuator installed at the upper side of a falling space in a space for controlling and monitoring a change in gravity applied to the dual module, and which moves the external module so that, according to a control signal, the external module has at least one physical quantity; and a sliding frame which is installed in a space at the lower side of the falling space and provides a path for taking the dual module into/out from the falling space.