Coupling Effects on Distributed Multi-Propeller Channel Wing at Low Speed Condition

Junmin Zhao, Zhongyun Fan, Min Chang and Gang Wang
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Junmin Zhao: Xi’an Modern Control Technology Research Institute, Xi’an 710065, China
Zhongyun Fan: Xi’an Modern Control Technology Research Institute, Xi’an 710065, China
Min Chang: Unmanned System Research Institute, Northwestern Polytechnical University, Xi’an 710072, China
Gang Wang: Xi’an Modern Control Technology Research Institute, Xi’an 710065, China

Energies, 2022, vol. 15, issue 15, 1-20

Abstract: Channel wing is a propeller-coupling layout that has good low-speed performance and S/VTOL potential. Focused on the application of this layout at the S/VTOL stage, this paper attempts to find the interaction mechanism for the distributed propeller channel wing. Firstly, the computation method based on RANS equations for propeller–wing integration was established with Momentum Source Method, which was compared with the unsteady Sliding Mesh method and validated by a ducted propeller. Secondly, the performances and aerodynamic characteristics of the single-propeller channel wings with two different airfoils were analyzed, and a ground test for the scaled model was conducted. Finally, a four-propeller channel wing was analyzed and compared with single-propeller channel wing, then the flow field characteristics were discussed in depth. The study shows that the airfoil shape will strongly affect the lift of channel wing at S/VTOL stage. Multi-propeller channel wing analysis indicates that rotational direction plays an important role in outside propeller interaction, where outboard-up rotation increases outside channel lift. In addition, the propeller wake also shows special distortion and dissipation behaviors, which are strongly affected by adjacent propellers.

Keywords: channel wing; over-the-wing propeller; aerodynamics; coupling effect (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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