Computational Technology Resources - CCC

G.H. Kim, "Design of a ducted propeller system for a tail-sitter type vertical take-off and landing vehicle using computational fluid dynamics ", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Eleventh International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 2, Paper 2.4, 2022, doi:10.4203/ccc.2.2.4

Keywords: tail-sitter, ducted propeller, vtol, uav, Openfoam.

Abstract

The tail-sitter type unmanned aerial vehicle (UAV) is attracting a lot of attention because it has a simple structure and can fly vertically and horizontally. However, even in horizontal flight, the same low pitch propeller for vertical flight is used, which has the disadvantage of not securing sufficient thrust during forward flight. Ducted propellers have the effect of improving thrust by 30-50% compared to open propellers at static or low speed, but in forward flight mode, they act like drag bodies, so an optimal aerodynamic design is essential. In this study, simplified computational numerical simulations were applied to parameterized ducts and the effect of duct shape on the performance of the propulsion system was evaluated. After analyzing about 2,000 cases, it was found that ducts with shorter lengths in the wake region and converging or straight ducts showed relatively higher efficiency. And the results were compared by varying the pitch and chord length distributions. Increment in both pitch and chord length produced more thrust, but the chord length resulted in better efficiency in terms of specific thrust.

download the full-text of this paper (PDF, 5 pages, 449 Kb)

go to the previous paper
go to the next paper
return to the table of contents
return to the volume description

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 2 PROCEEDINGS OF THE ELEVENTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: B.H.V. Topping and P. Iványi Paper 2.4 Design of a ducted propeller system for a tail-sitter type vertical take-off and landing vehicle using computational fluid dynamics G.H. Kim Ninano Company Inc., Gimcheon-si, Republic of Korea doi:10.4203/ccc.2.2.4 Full Bibliographic Reference for this paper G.H. Kim, "Design of a ducted propeller system for a tail-sitter type vertical take-off and landing vehicle using computational fluid dynamics ", in B.H.V. Topping, P. Iványi, (Editors), "Proceedings of the Eleventh International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 2, Paper 2.4, 2022, doi:10.4203/ccc.2.2.4 Keywords: tail-sitter, ducted propeller, vtol, uav, Openfoam. Abstract The tail-sitter type unmanned aerial vehicle (UAV) is attracting a lot of attention because it has a simple structure and can fly vertically and horizontally. However, even in horizontal flight, the same low pitch propeller for vertical flight is used, which has the disadvantage of not securing sufficient thrust during forward flight. Ducted propellers have the effect of improving thrust by 30-50% compared to open propellers at static or low speed, but in forward flight mode, they act like drag bodies, so an optimal aerodynamic design is essential. In this study, simplified computational numerical simulations were applied to parameterized ducts and the effect of duct shape on the performance of the propulsion system was evaluated. After analyzing about 2,000 cases, it was found that ducts with shorter lengths in the wake region and converging or straight ducts showed relatively higher efficiency. And the results were compared by varying the pitch and chord length distributions. Increment in both pitch and chord length produced more thrust, but the chord length resulted in better efficiency in terms of specific thrust. download the full-text of this paper (PDF, 5 pages, 449 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
Back to top	©Civil-Comp Limited 2023 - terms & conditions