| Summary: | For the low-wing configuration aircraft, server flow interference exist at the wing-body junction, the boundary layer stack at the junction is the main reason for flow separation, the flow separation results in drag addition. This paper focus on fairing and drag reduction. The fairings decrease the boundary layer thickness to the purpose of drag reduction by blowing away the boundary layer at the wing-body junction. The characteristics of three different fairings are analyzed comparatively. The numerical study and analyses indicate that the three different fairings can achieve drag reduction, improve the aerodynamic performance. It can be a reference for the design of fairing and drag reduction on the low-wing layout aircraft.
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