Proceedings ArticleDOI
Induced drag of wings with highly swept and tapered wing tips
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The article was published on 1990-09-17. It has received 17 citations till now. The article focuses on the topics: Lift-induced drag & Washout (aeronautics).read more
Citations
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Journal ArticleDOI
DRAG DUE TO LIFT: Concepts for Prediction and Reduction
TL;DR: Focusing on relatively high-aspect-ratio subsonic wings, the review suggests that opportunities for new concepts remain, but the greatest challenge lies in their integration with other aspects of the system.
Journal ArticleDOI
Aircraft Drag Reduction-A Review
TL;DR: In this article, the state of the art in aeronautical drag reduction across the speed range for the conventional drag components of viscous drag, drag due to lift and wave drag, was summarized.
Journal ArticleDOI
Relaxed-Wake Vortex-Lattice Method Using Distributed Vorticity Elements
Götz Bramesfeld,Mark D. Maughmer +1 more
TL;DR: In this article, a lifting surface method is presented that uses elements having distributed vorticity to model lifting surfaces and their shed wakes, allowing the representation of a force-free continuous wake-vortex sheet that is free of numerical singularities and is thus robust in its numerical rollup behavior.
A Computational and Experimental Study of Nonlinear Aspects of Induced Drag
TL;DR: In this article, a hybrid wake-relaxation scheme couples the well-behaved nature of the discrete vortex wake with viscous-core modeling and the high-accuracy velocity prediction of the high order panel method.
Journal ArticleDOI
Computation of induced drag for elliptical and crescent-shaped wings
Stephen C. Smith,Ilan Kroo +1 more
TL;DR: In this article, a high-order panel method was used to study the induced drag of elliptical and crescent-shaped wings using both techniques, and the effect of correctly modeling the force-free, rolled-up wake geometry on the predicted span efficiency was demonstrated for both wing planforms.
References
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Journal ArticleDOI
Prediction of Subsonic Aerodynamic Characteristics: A Case for Low-Order Panel Methods
TL;DR: In this paper, a low-order panel method is presented for the calculation of subsonic aerodynamic characteristics of general configurations, based on piecewise constant doublet and source singularities.
Journal ArticleDOI
Efficiency characteristics of crescent-shaped wings and caudal fins
TL;DR: Analysis of crescent-shaped fins of fish and aquatic mammals and wings of certain birds shows that backward curvature of a wing improves induced efficiency to a value greater than that of the flat untw wing of elliptical shape considered optimal in classical wing theory.