摘要：AbstractBenefiting from stable autorotation, the capacity of autonomous unpowered landing brings a gyroplane its feasibility of Short or Vertical Landing with high payload fraction, which furthermore extends its application prospects. Aiming to this mission, a guidance system architecture is proposed to provide a systematic solution in this specific flight phase, comprising Energy Management, Trajectory Generation as well as Guidance Command Calculation. Thus, the guidance for an unpowered landing mission can be realized through the management of its related energy to a designated touchdown point. By an onboard trajectory generation based on optimal lift-to-drag ratio target, the energy status is dynamically obtained and transferred as an evidence for mission-level decision. Utilizing the generated trajectory profiles, real-time guidance command is calculated for providing the control expectations respectively in height, velocity and lateral control channels. Through this approach, a gyroplane can consume its energy appropriately by multi-circle-spiral-descending near its landing site and eventually land at its touchdown point with expected status. Simulations under different scenarios show the effectiveness and adaptability of the approach.
