DRAG DUE TO LIFT: Concepts for Prediction and Reduction

▪ Abstract This article describes some of the fundamental ideas underlying methods for induced-drag prediction and reduction. A review of current analysis and design methods, including their development and common approximations, is followed by a survey of several approaches to lift-dependent drag reduction. Recent concepts for wing planform optimization, highly nonplanar surfaces, and various tip devices may lead to incremental but important gains in aircraft performance. 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.

[1]  Harry H. Heyson,et al.  Theoretical parametric study of the relative advantages of winglets and wing-tip extensions , 1977 .

[2]  W. Durand,et al.  Airfoils and Airfoil Systems of Finite Span , 1935 .

[3]  Stephen C. Smith.  A Computational and Experimental Study of Nonlinear Aspects of Induced Drag , 1996 .

[4]  William Blake,et al.  Design, performance and modeling considerations for close formation flight , 1998 .

[5]  R. T. Jones,et al.  Effect of Winglets on the Induced Drag of Ideal Wing Shapes , .

[6]  J. Weissinger,et al.  The Lift Distribution of Swept-Back Wings , 1947 .

[7]  Philippe R. Spalart,et al.  AIRPLANE TRAILING VORTICES , 1998 .

[8]  Robert Thomas Jones,et al.  The Spanwise Distribution of Lift for Minimum Induced Drag of Wings Having a Given Lift and a Given Bending Moment , 1950 .

[9]  Stephen C. Smith,et al.  Trefftz-Plane Drag Minimization at Transonic Speeds , 1997 .

[10]  E. C. Maskell,et al.  Progress towards a method for the measurement of the components of the drag of a wing of finite span , 1972 .

[11]  J. Wolkovitch.  The joined wing - An overview. [aircraft tandem wings in diamond configurations] , 1985 .

[12]  Ilan Kroo,et al.  Computation of induced drag for elliptical and crescent-shaped wings , 1993 .

[13]  Max M Munk,et al.  The Minimum Induced Drag of Aerofoils , 1979 .

[14]  Mark Dehaan.  Induced drag of wings with highly swept and tapered wing tips , 1990 .

[15]  Kenneth C. Hall,et al.  Minimum induced power requirements for flapping flight , 1996, Journal of Fluid Mechanics.

[16]  Kamran Rokhsaz.  Effect of viscous drag on optimum spanwise lift distribution , 1992 .

[17]  R. H. Lange,et al.  Feasibility study of the transonic biplane concept for transport aircraft application , 1974 .

[18]  R. T. Jones,et al.  Improving the efficiency of smaller transport aircraft , 1984 .

[19]  P. J. Gage,et al.  New approaches to optimization in aerospace conceptual design , 1995 .

[20]  Martin V. Lowson,et al.  Minimum Induced Drag for Wings with Spanwise Camber , 1990 .

[21]  Ilan Kroo,et al.  Advanced configurations for very large transport airplanes , 1998 .

[22]  D. M. Bushnell,et al.  An overview of concepts for aircraft drag reductions , 1977 .

[23]  G. F. Butler,et al.  Effect of Downwash on the Induced Drag of Canard-Wing Combinations , 1982 .

[24]  J. E. Allen,et al.  The use of wing tip sails to reduce vortex drag , 1977, The Aeronautical Journal (1968).

[25]  L Prandtl,et al.  Theory of lifting surfaces , 1920 .

[26]  W Mangler.  The lift distribution of wings with end plates , 1938 .

[27]  Mark Page,et al.  Multidisciplinary optimization on an advanced composite wing , 1996 .

[28]  D. M. Bushnell,et al.  DRAG REDUCTION IN NATURE , 1991 .

[29]  Dennis M. Bushnell.  Far term visions: The frontiers of the responsibly imaginable , 1996 .

[30]  James Chen-yuan Wu,et al.  A generalized wake-integral approach for drag determination in three-dimensional flows , 1979 .

[31]  Elliott G Reid.  The Effects of Shielding the Tips of Airfoils , 1925 .

[32]  F. Hainsworth.  INDUCED DRAG SAVINGS FROM GROUND EFFECT AND FORMATION FLIGHT IN BROWN PELICANS , 1988 .

[33]  William Mutterperl,et al.  The End-Plate Effect of a Horizontal-Tail Surface on Vertical Tail Surface , 1941 .

[34]  Sean Wakayama,et al.  Lifting surface design using multidisciplinary optimization , 1995 .

[35]  Dezso Gyorgyfalvy,et al.  PERFORMANCE ANALYSIS OF THE HORTEN IV FLYING WING , 1960 .

[36]  G. Brune,et al.  Quantitative low-speed wake surveys , 1994 .

[37]  I. Kroo,et al.  The Computation of Induced Drag with Nonplanar and Deformed Wakes , 1990 .

[38]  Peter N. Joubert,et al.  The development of the winged keel for twelve-metre yachts , 1986, Journal of Fluid Mechanics.

[39]  John David Anderson,et al.  A history of aerodynamics and its impact on flying machines , 1997 .

[40]  C. P. van Dam,et al.  Recent experience with different methods of drag prediction , 1999 .

[41]  P. Lissaman,et al.  Formation Flight of Birds , 1970, Science.

[42]  B. Holmes,et al.  Induced drag - Historical perspective , 1989 .

[43]  Dennis M. Bushnell.  Aircraft Drag Reduction , 1992 .

[44]  R. T. Jones,et al.  Wing flapping with minimum energy , 1980, The Aeronautical Journal (1968).

[45]  Richard T. Whitcomb,et al.  A design approach and selected wind tunnel results at high subsonic speeds for wing-tip mounted winglets , 1976 .

[46]  C. W. Burkett.  Reductions in induced drag by the use of aft swept wing tips , 1989, The Aeronautical Journal (1968).

[47]  C. P. van Dam.  Swept wing-tip shapes for low-speed airplanes , 1985 .

[48]  J. E. Yates,et al.  A fundamental study of drag and an assessment of conventional drag-due-to-lift reduction devices , 1986 .

[49]  Ilan Kroo,et al.  A General Approach to Multiple Lifting Surface Design and Analysis , 1984 .

[50]  C. P. van Dam,et al.  Sheared Wing-Tip Aerodynamics: Wind-Tunnel and Computational Investigation , 1989 .

[51]  Ilan Kroo,et al.  A Fundamental Comparison of Canard and Conventional Configurations , 1983 .

[52]  Max M. Munk.  My Early Aerodynamic Research Thoughts and Memories , 1981 .

[53]  Russell M. Cummings,et al.  Analysis of the Elements of Drag in Three-Dimensional Viscous and Inviscid Flows , 1996 .

[54]  J. W. Moore,et al.  Large wing-in-ground effect transport aircraft , 1979 .

[55]  John E. Terry.  AERODYNAMIC CHARACTERISTICS OF RING WINGS, A BIBLIOGRAPHY , 1964 .

[56]  Kamran Rokhsaz.  A Brief Survey of Wing Tip Devices for Drag Reduction , 1993 .