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Wing-tip vanes as vortex attenuation and induced drag reduction devices (1975)

Nagati, M. G. ; Wentz, W. H., Jr.

In: CASI

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Publication Date: 2016-06-07

Description: Analytical studies have been conducted to examine the feasibility of utilizing wing tip turbines to remove swirl from the wing trailing vortex, and hence reduce the potential for upset of following aircraft. Energy recovery from the turbines is also analyzed. A computer routine has been developed to permit rapid parametric studies of various tip turbine designs. It is shown that the optimum turbine is a non-rotating set of vanes which reduce swirl and recover energy in the form of reduced overall configuration induced drag. A specific case study indicates a 23% reduction in induced drag for a rectangular wing of aspect ratio 5.33, operated at a lift coefficient at 1.0.

Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE

Type: Kansas Univ. Proc. of the NASA, Ind., Univ., Gen. Aviation Drag Reduction Workshop; p 203-214

Format: application/pdf

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