Automatic Circular Take-Off and Landing for Tethered Aircraft
摘要
This article addresses the circular take-off and landing (CTOL) strategies for fixed-wing tethered aircraft, particularly for Airborne Wind Energy Systems (AWES). This work introduces a novel bridle actuator to control the aircraft’s roll angle and presents a dynamic model integrated into a hierarchical control architecture. Simulations demonstrate the viability of this approach, exploring loiter phases with varying roll angles, including coordinated turns. The study highlights the advantage of single-tether systems over multi-tether configurations for improved power efficiency in AWES. It identifies operational regions suitable for tethered flight or a coordinated turn based on tether length and height. The findings suggest that CTOL with a single tether is a viable solution for AWES automation.