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

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