Using linear programming allows one to impose requisite smoothness and other, overall constraints on the fitted curves and surfaces. Our analysis was a complex study of two flexible, thin lifting surfaces, assumed to be two-dimensional, leading to coupled linear integral equations. The solution of these equations is exceedingly complex. The resulting solution shows that both of these mechanisms can occur, depending on the separation distance and the angle between the jib and the mainsail. This was a critical treatise covering work on incompressible and compressible, subsonic and supersonic wakes.
Wakes flow are a classical topic in fluid dynamics.
In the fifties and sixties, because of military considerations, there was an enormous effort in investigating complex wake flows behind slender and bluff bodies, compressible in general and particularly high-speed flows. This book was the first and most comprehensive treatise covering the classical work and the modern investigations. Unlike other multi-authored books, preparing this book was far different than putting together a set of chapters. It required a great deal of oversight and involvement of the editors.