Reduction of base drag

Abstract The present paper gives a review of various existing methods for reducing base drag of two-dimensional and axisymmetric bodies having a blunt base. These methods include splitter plates, both thin and thick, splitter wedges, base bleed. boat-tailing and various types of serrated trailing edges. The effectiveness of the various devices in reducing base drag is shown and compared. In some cases their influence on the lift of an airfoil is also indicated.

[1]  C. Hayes,et al.  Jet effects at supersonic speeds on base and afterbody pressures of a missile model having single and multiple jets , 1963 .

[2]  J. E. Bowman,et al.  Cylindrical afterbodies in supersonic flow with gas ejection. , 1967 .

[3]  J. E. Bowman,et al.  Cylindrical afterbodies at M sub infinity equals 2 with hot gas ejection. , 1968 .

[4]  J. E. Lewis,et al.  Mean properties of the turbulent near wake of a slender body with and without base injection. , 1969 .

[5]  H. H. Pearcey,et al.  THE AERODYNAMIC DESIGN OF SECTION SHAPES FOR SWEPT WINGS , 1962 .

[6]  M Tanner,et al.  A Method for Reducing the Base Drag of Wings with Blunt Trailing Edge , 1972 .

[7]  W. A. Mair.  Reduction of Base Drag by Boat-Tailed Afterbodies in Low-Speed Flow , 1969 .

[8]  Dean R Chapman.  Airfoil profiles for minimum pressure drag at supersonic velocities -- general analysis with application to linearized supersonic flow , 1952 .

[9]  J. E. Bowman,et al.  Boat-tailed afterbodies at M infinity equals 2 with gas ejection. , 1968 .

[10]  A. Roshko.  On the Wake and Drag of Bluff Bodies , 1955 .

[11]  P. W. Bearman,et al.  The Effect of Base Bleed on the Flow behind a Two-Dimensional Model with a Blunt Trailing Edge , 1967 .

[12]  D. M. Sykes.  Pressures on boat-tailed afterbodies in transonic flow with a low-thrust jet , 1971 .

[13]  August F Bromm,et al.  Investigation at Supersonic Speeds of the Variation with Reynolds Number and Mach Number of the Total, Base, and Skin-friction Drag of Seven Boattail Bodies of Revolution Designed for Minimum Wave Drag , 1956 .

[14]  A. L. Addy,et al.  Thrust-minus-drag optimization by base bleed and/or boattailing , 1970 .

[15]  Lester Lees,et al.  Near wake of a hypersonic blunt body with mass addition , 1970 .

[16]  Frank M. Hamaker,et al.  An experimental investigation of the base pressure characteristics of nonlifting bodies of revolution at Mach numbers from 2.73 to 4.98 , 1952 .

[17]  D. M. Sykes.  Cylindrical and boat-tailed afterbodies in transonic flow with gas ejection , 1970 .

[18]  Raymond Sedney.  REVIEW OF BASE DRAG , 1966 .

[19]  C. Wood,et al.  The Effect of Base Bleed on a Periodic Wake , 1964, Journal of the Royal Aeronautical Society.

[20]  Peter W. Bearman,et al.  Investigation of the flow behind a two-dimensional model with a blunt trailing edge and fitted with splitter plates , 1965, Journal of Fluid Mechanics.

[21]  A. Roshko.  On the drag and shedding frequency of two-dimensional bluff bodies , 1954 .

[22]  D. W. Holder.  The Transonic Flow Past Two-Dimensional Aerofoils , 1964, The Journal of the Royal Aeronautical Society.

[23]  J. J. Ginoux.  Effect of gas injection in separated supersonic flows , 1962 .

[24]  Itiro Tani,et al.  Experimental investigation of flow separation over a step , 1958 .

[25]  Robert T. Herzog.  Nitrogen injection into the base region of a hypersonic wake , 1964 .

[26]  H. Mcdonald,et al.  A correlation of high subsonic afterbody drag in the presence of a propulsive jet or support sting , 1965 .

[27]  H. H. Kurzweg,et al.  Interrelationship Between Boundary Layer and Base Pressure , 1951 .