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This innovative kite system is called the WindiWing, and utilizes aerodynamic forces and moments to control its configuration for both ascent and descent, eliminating the need for an external power source or human intervention. By harnessing wind power, the system autonomously climbs and descends along a pilot kite line, provided sufficient wind conditions exist. Windiwing includes a set of stops at predetermined upper and lower bounds of the kite line, which define the highest and lowest points the WindiWing can travel. When a stop is hit, the WindiWing changes direction. Therefore, it can sustain extended flight times at different altitudes. Unlike prior solutions, WindiWing is a passive line-climber operating entirely through aero-mechanical principles and does not require electrical power or active control systems for changes in lift. Instead, WindiWing continuously moves between the designated stops along the kite tether, maintaining stable and predictable movement without the need for remote operation or onboard power. WindiWing is designed with flexibility in mind, offering the ability to carry a range of instrumentation, making it suitable for integration with kite-based systems, tethered balloons, or uncrewed aircraft platforms. The absence of electrical components reduces complexity, enhances reliability, and allows for extended atmospheric data collection with minimal oversight. By offering a scalable, cost-effective, and power-independent solution, this technology enables long-duration atmospheric profiling at various altitudes, making it an ideal tool for researchers in the fields of atmospheric research, environmental research, and education.