Accession Number : AD0256183

Title :   SUPERSONIC FLOW ABOUT TWO-DIMENSIONAL ASYMMETRIC BLUNT BODIES

Descriptive Note : Technical rept.,

Corporate Author : GENERAL APPLIED SCIENCE LABS INC HEMPSTEAD N Y

Personal Author(s) : VAGLIO-LAURIN,ROBERTO

Report Date : JUL 1960

Pagination or Media Count : 1

Abstract : IN Part I, it is shown that application of the Dorodnitsyn-Belotserkovskii (DB) method can be greatly expedited and simplified by introducing a linearization process and a simultaneous stretching of coordinates in the spirit of the PoincareLighthill-Kuo method. The approach eliminates cumbersome iteration previously required by the DB method and standardizes the determination of: (a) successive approximations, and (b) effects of changes in free stream Mach number and body profile for a given approximation. Details of analysis and procedure are presented in connection with the first approximation of the DB method; the extension to subsequent approximations and to axisymmetric problems is outlined. In Part II, a comparison between theory and experiment is instituted for a two-dimensional asymmetric configuration tested in air (gamma equals 1.4) at Mach 8; predicted pressure distributions and shock shapes are in good agreement with measurements. (Author)

Descriptors :   *BLUNT BODIES, *PERTURBATION THEORY, *SUPERSONIC AIRFOILS, *SUPERSONIC FLOW, AERODYNAMIC CHARACTERISTICS, AERODYNAMIC CONFIGURATIONS, AIRFOILS, HYPERSONIC CHARACTERISTICS, MATHEMATICAL ANALYSIS, PRESSURE, SHOCK WAVES

Distribution Statement : APPROVED FOR PUBLIC RELEASE