Measurements in the Near-Wake of a Transport Model, to Determine the Lift, Drag and Drag Components Using Maskell's Analysis

摘要

Extensive measurements have been made on a plane normal to the wake of a swept-wing/fuselage model of airbus type, at C sub L = 0.49 in incompressible flow, using a computer-controlled wake-traverse system incorporating a null-reading five-hole yawmeter probe. The results define the detailed distributions of total pressure defect, flow velocity, flow angles and streamwise vorticity in the viscous wake at that plane. The results have been analyzed within the basic theoretical framework set out by Maskell (1973), allowing the calculation of lift and drag from traverse data, and the resolution of the drag into provisionally-defined components C sub D sub I and C sub D sub II, respectively relating to the profile drag and vortex drag. (Author)