Giuseppe Russo is a recently retired Aerospace Engineer. Since 1984 he has been Associate Professor of Experimental Aerodynamics at the Università degli Studi di Napoli “Federico II”, Dipartimento di Ingegneria Aerospaziale (DIAS). Prior to that, the author was Assistant Professor of Gas dynamics from 1967 to 1983 at the same university. Russo has been the author of more than 60 scientific articles, a consultant of Centro Italiano di Ricerca Aerospaziale (CIRA) and of Agenzia Spaziale Italiana (ASI). He was Member of the Fluid Dynamic Panel of AGARD/NATO from 1992 to 1997.