INVESTIGATION ON FLOW SEPARATION EFFECTS ON AIRCRAFT LONGITUDINAL MOMENT CHARACTERISTIC FOR FUSELAGE-MOUNTEDAIRCRAFT

摘要

The paper used the high lift configuration of the modern civil fuselage-mounted aircraft as its research object, and researched the effects of flow separation on the wing on aircraft longitudinal moment. The numerical simulation was chose for study. Based on three-dimensional time-dependent compressible Reynolds-averaged Navier-Stokes equations, the elects of the two kinds of flow separation on the wing: the inboard separation and the outboard separation were simulated, and their effects to longitudinal moment as well as flow analysis were given. The paper also analyzed the reason why the longitudinal moment characteristic changes when separation start from the different area of the wing.