Accession Number:

AD0769031

Title:

Structure of Turbulent Wakes of Hypersonic Spheres as Inferred with Ion Probes,

Descriptive Note:

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s):

• Heckman,D.
• Sevigny,L.

Report Date:

1972-04-28

Pagination or Media Count:

17.0

Abstract:

Survey arrays of ion probes were used to study the structure of the ionized turbulent wakes of 2.7 in. diameter spheres flown at 14500 fts in atmospheres of nitrogen at pressures of 7.6 and 20 Torr. For various radial distances measured from the wake axis, matrices of data points were obtained giving random values of the axial distance behind the projectile at which ionization begins, the first ionized eddy occurs, and continuous turbulence begins.

Descriptors:

• (*HYPERSONIC FLOW
• *GAS IONIZATION)
• (*WAKE
• SPHERES)
• HYPERVELOCITY PROJECTILES
• TURBULENCE
• IONS
• PROBES
• CANADA

Subject Categories:

• Fluid Mechanics
• Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE