This paper presents the computational aerodynamics analysis of a complete EAV(Electric Aerial Vehicle) configuration propeller rotating effect is applied. EAV-2H, being developed by KARI(Korea Aerospace Research Institute) is a technology demonstrator for HALE(High Altitude Long Endurance), solar energy and secondary battery is used to power this aircraft. Also it has been applied for long-endurance, high aspect ratio, low Reynolds airfoil. Computational analysis predicts the performance of the propeller and cruise power and it was verified by wind tunnel and flight tests.