Accession Number:

AD0618460

Title:

MEASURED TRANSITION FROM LAMINAR TO TURBULENT FLOW AND SUBSEQUENT GROWTH OF TURBULENT WAKES,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

Report Date:

1964-09-08

Pagination or Media Count:

5.0

Abstract:

Turbulent transition distances and growth of turbulent wakes behind 316-in. copper-clad aluminum spheres traveling through rarefied air at 18,000 to 20,000 fps are presented. The data are taken by two independent methods twin schlieren systems optical and a UHF microwave cavity electronic. The turbulent transition distances are measured to several thousands of sphere diameters at the lower pressures by both methods. Turbulent wake widths are also determined by both techniques and the 13 power growth rate is confirmed for these velocities. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE