Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAV
Complex aerodynamic characteristics and optimal control during the attitude transition of tilt-powered coaxial twin-rotor unmanned aerial vehicles (UAVs) represent key challenges in flight control design. This study investigates aerodynamic mechanisms and control parameter optimization during the tr...
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MDPI AG
2024-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/22/7115 |
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| author | Wei Wu Xinyu Tan Xing Liu Angang Luo Lanjie Niu |
| author_facet | Wei Wu Xinyu Tan Xing Liu Angang Luo Lanjie Niu |
| author_sort | Wei Wu |
| collection | DOAJ |
| description | Complex aerodynamic characteristics and optimal control during the attitude transition of tilt-powered coaxial twin-rotor unmanned aerial vehicles (UAVs) represent key challenges in flight control design. This study investigates aerodynamic mechanisms and control parameter optimization during the transition of UAVs from vertical to forward flight. By establishing a dynamic model and combining theoretical and numerical analyses, the optimal rotor spacing is determined to be h = 0.5 R. The load distribution and aerodynamic characteristics of the aircraft are analyzed at different initial tilt angles during attitude transitions. At an initial tilt angle of δ = 9°, the thrust force increases by 439% compared with that at δ = 3°, and the tip speed increases by 15% and 35% compared with that at δ = 3° and δ = 13°, respectively. The results indicate that a tilt angle of δ = 9° results in a higher turbulent dissipation rate and rotor layout efficiency, with a smoother vortex flow and more orderly distribution. The interference between the twin-rotor tip vortices is relatively weak, resulting in excellent symmetry and aerodynamic stability. Through the improvement of the theoretical model and parameter optimization of a novel tilt-powered coaxial twin-rotor UAV, this study enhances UAV flight stability and provides valuable insights and validation for the further development of UAV technology. |
| format | Article |
| id | doaj-art-2e6ea12484064a07b055b3243609c916 |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj-art-2e6ea12484064a07b055b3243609c9162025-08-20T02:27:39ZengMDPI AGSensors1424-82202024-11-012422711510.3390/s24227115Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAVWei Wu0Xinyu Tan1Xing Liu2Angang Luo3Lanjie Niu4School of Electronic Information Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Electronic Information Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Electronic Information Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Mechatronic Engineering, Xi’an Technological University, Xi’an 710021, ChinaScience and Technology on Electromechanical Dynamic Control Laboratory, Xi’an 710065, ChinaComplex aerodynamic characteristics and optimal control during the attitude transition of tilt-powered coaxial twin-rotor unmanned aerial vehicles (UAVs) represent key challenges in flight control design. This study investigates aerodynamic mechanisms and control parameter optimization during the transition of UAVs from vertical to forward flight. By establishing a dynamic model and combining theoretical and numerical analyses, the optimal rotor spacing is determined to be h = 0.5 R. The load distribution and aerodynamic characteristics of the aircraft are analyzed at different initial tilt angles during attitude transitions. At an initial tilt angle of δ = 9°, the thrust force increases by 439% compared with that at δ = 3°, and the tip speed increases by 15% and 35% compared with that at δ = 3° and δ = 13°, respectively. The results indicate that a tilt angle of δ = 9° results in a higher turbulent dissipation rate and rotor layout efficiency, with a smoother vortex flow and more orderly distribution. The interference between the twin-rotor tip vortices is relatively weak, resulting in excellent symmetry and aerodynamic stability. Through the improvement of the theoretical model and parameter optimization of a novel tilt-powered coaxial twin-rotor UAV, this study enhances UAV flight stability and provides valuable insights and validation for the further development of UAV technology.https://www.mdpi.com/1424-8220/24/22/7115coaxial rotorrotor layoutnumerical analysisparameter optimizationCFD |
| spellingShingle | Wei Wu Xinyu Tan Xing Liu Angang Luo Lanjie Niu Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAV Sensors coaxial rotor rotor layout numerical analysis parameter optimization CFD |
| title | Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAV |
| title_full | Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAV |
| title_fullStr | Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAV |
| title_full_unstemmed | Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAV |
| title_short | Aerodynamic Analysis of Rotor Spacing and Attitude Transition in Tilt-Powered Coaxial Rotor UAV |
| title_sort | aerodynamic analysis of rotor spacing and attitude transition in tilt powered coaxial rotor uav |
| topic | coaxial rotor rotor layout numerical analysis parameter optimization CFD |
| url | https://www.mdpi.com/1424-8220/24/22/7115 |
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