FLIGHT DYNAMIC RESPONSE ANALYSIS OF THE FLEXIBLE AIRCRAFT FLYING THROUGH THE WIND FIELD OVER COMPLEX TERRAINS

摘要

A numerical simulation method for the flightdynamic response of the elastic aircraft flyingthrough the wind field over complex terrain isdeveloped in this paper. The complex terrainmodel is established by the spline method basedon the contour line of the map. The wind field isthen simulated by the vortex lattice method inpotential flow theory. Furthermore, the effectson the aerodynamic characteristics of theaircraft that induced by the structural flexibilityand the wind velocity gradients are alsoconsidered. A numerical example is studied, andthe result indicates that the structural flexibilitywould have a great influence on the dynamicresponse, when the aircraft flying through acomplex wind field.