Aerodynamic Effects of Vortex Suppressors,
TECHNION - ISRAEL INST OF TECH HAIFA DEPT OF AERONAUTICAL ENGINEERING
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The effectiveness of various devices in accelerating the dissipation of wing-tip vortices has received considerable attention recently. These devices include jets blown into or near the vortex core, both in the upstream and downstream direction, small cruciform wings, both fixed and rotating, mounted close behind the wing near tip and angled fences or vortex generators mounted on the wing upper and lower surfaces so as to produce swirl opposite to that of the tip vortex. In this report are proposed mathematical models for representing some of these devices in order to calculate their effects on the wing aerodynamic properties. These models are incorporated into a lifting-line theory and examples are calculated for high-aspect-ratio, unswept, untwisted wings of the elliptic planform. In order to obtain results of a more useful kind, it is suggested that these models be used with a lifting-surface theory of the vortex-lattice type.