Multi-rotor　Unmanned　Aerial　Vehicles　(UAVs)　often　experience　horizontal　incoming　flow　disturbances　during　hovering,　which　can　compromise　both　mission　accuracy　and　stability.　This　study　investigates　the　aerodynamic　performance　of　a　hexacopter　with　dihedral　angle　configurations,　which　is　capable　of　resisting　interference　from　horizontal　flows,　unlike　planar　hexacopters.　The　effects　of　four　yaw　angles　and　three　rotor　dihedral　angles　were　systematically　examined　using　both　test　bench　experiments　and　computational　fluid　dynamics　simulations　under　varied　operating　conditions.　The　aerodynamic　performance　of　the　propellers　was　analyzed　in　terms　of　upwash,　downwash　flow,　and　rotor　angle　of　attack.　Results　demonstrate　that　the　direction　of　rotation　of　the　front　rotor　significantly　influences　the　thrust　distribution　of　adjacent　rotors　in　the　presence　of　incoming　flow.　Among　the　yaw　angles　studied,　a　yaw　angle　of　60°　generated　higher　lift　and　pitching　moments　compared　to　a　yaw　angle　of　0°,　while　yaw　angles　of　30°　and　90°　induced　additional　rolling　moments.　The　study　also　reveals　that　differences　in　the　rotor　dihedral　angle　significantly　affect　the　pitching　moment　and　positional　drift　of　the　hexacopter,　respectively.　These　findings　provide　insights　into　optimizing　the　performance　of　multi-rotor　UAVs　under　wind　disturbances.　©　2025　Author(s).