Accession Number:

AD0621345

Title:

MICROWAVE MEASUREMENTS ON SHOCK WAVES IN AIR.

Descriptive Note:

Reprint,

Corporate Author:

HEBREW UNIV JERUSALEM (ISRAEL) DEPT OF PHYSICS

Personal Author(s):

Report Date:

1963-01-01

Pagination or Media Count:

5.0

Abstract:

The microwave attenuation by shock waves in air was investigated in the Mach No. range of 8 - 12 and at pressures 1-5 mm Hg. It is shown that an analysis of the time dependence of the attenuation yields important information regarding a the maximum electron-density b the build-up of the electron density and the beginning of the shock, c the electron density near the contact surface, and d the length of the heated slug section. An investigation was made of the effect of transitions from a larger diameter shock tube to a smaller tube on the maximum microwave attention, on its time dependence, and on the Mach No. In particular, a study was made of the effect of shorter and larger taper sections as well as abrupt transitions for various Mach Numbers and initial pressures. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE