Accession Number : AD0467691

Title :   HYPERSONIC STUDIES OF WAKES BEHIND CYLINDERS. PART I: PITOT PRESSURE MEASUREMENTS AT M = 16 IN HELIUM,

Corporate Author : PRINCETON UNIV NJ GAS DYNAMICS LAB

Personal Author(s) : Ledger, J. D. ; Vas, I. E. ; Bogdonoff, S. M.

Report Date : JUN 1965

Pagination or Media Count : 1

Abstract : The pitot pressure was measured in the wake of two-dimensional circular cylinders at a Mach number of 16 in helium. The diameters of the cylinders used were 1/8 inch and 3/16 inch giving a Reynolds number variation of 10,500 to 25,300 based on free stream conditions. Surveys were performed as far back as 80 body diameters. Profiles in the far wake at the same x/D were similar, independent of body Reynolds number. The wake growth was found to vary as the 0.6 power. Body Reynolds number had no effect on the rate of growth over the range studied. It was not possible to deduce transition from the pitot pressure measurement alone. (Author)

Descriptors :   (*WAKE, HYPERSONIC FLOW), (*HYPERSONIC FLOW, WAKE), PITOT TUBES, CYLINDRICAL BODIES, PRESSURE, HELIUM, REYNOLDS NUMBER, STAGNATION POINT.

Distribution Statement : APPROVED FOR PUBLIC RELEASE