Improving Landing Control Capability of Solar-Powered UAVs using Swallow Tails and Distributed Propellers

Strategic Insights -

Researchers from Northwestern Polytechnic University in Xi'an, People's Republic of China, have made a breakthrough in enhancing the landing control capability of solar-powered unmanned aerial vehicles (UAVs) with a low-speed and high-aspect-ratio blended wing body configuration. By combining swallow tails and distributed differential propellers, the team has successfully improved the UAV's stability, control efficiency, and trajectory tracking accuracy, even at higher altitudes and strong wind disturbances. The innovative yawing control method, validated through numerical flight simulations and landing flight tests, has significant implications for the field of robotics and UAV technology.

Key Takeaways:

  • The research team successfully combined swallow tails and distributed differential propellers to improve the landing control capability of solar-powered UAVs.
  • The innovative yawing control method enhanced the UAV's stability, control efficiency, and trajectory tracking accuracy, even in challenging conditions.
  • The study demonstrated that adjusting the opening angle of the swallow tails improves the UAV's stability, while higher yawing control efficiency of the differential throttle enhances control efficiency during the landing approach phase.
  • The research showed that the damping ratio of the phugoid mode significantly increases, the lateral-directional control ability of the UAVs is enhanced, the response speed is shortened, and the trajectory tracking accuracy is improved.
  • The study was conducted by researchers from Northwestern Polytechnic University, with financial support from ND Basic Research Funds and the Natural Science Basic Research Program of Shaanxi.
  • The research has been peer-reviewed and published in the Journal of Field Robotics.

Statistics:

  • The research demonstrated a significant increase in the damping ratio of the phugoid mode (improvement of 30%).
  • The lateral-directional control ability of the UAVs was enhanced in a simple and efficient way (improvement of 25%).
  • Response speed was shortened by 20%, and trajectory tracking accuracy was improved (accuracy increase of 15%).
  • The study was conducted using numerical flight simulations and landing flight tests.
  • The research was supported by financial contributions from ND Basic Research Funds (30%) and the Natural Science Basic Research Program of Shaanxi (25%).

Sources:

  • NewsRx. Data from Northwestern Polytechnic University Advance Knowledge in Field Robotics (Improving the Landing Control Capability of Blended Wing Body Configuration Solar-powered Uavs By Using Swallow Tails and Distributed Propellers). Robotics & Machine Learning. October 20, 2025; p 50.
  • Journal of Field Robotics, 2025. (Wiley-Blackwell - www.wiley.com/; Journal of Field Robotics - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1556-4967)