Accession Number : AD0476809


Title :   RESEARCH IN TURBULENT WAKES


Descriptive Note : Semiannual technical summary rept. 1 Jul-31 Dec 1965


Corporate Author : BENDIX CORP ANN ARBOR MI BENDIX SYSTEMS DIV


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/476809.pdf


Report Date : 31 Dec 1965


Pagination or Media Count : 51


Abstract : Data on jet turbulence are being obtained steadily with the photospecto-correlator and the bistatic microwave probe. The two most interesting results have been the discovery of the null in the microwave signal scattered through 90 deg from an overdense plasma and the discovery that grid insertion demodulates the jet turbulence in a selective manner. The possibility of demodulating an RV'S oscillation superimposed on its wake is an interesting prospect. The laser source for the shadowgraph system is expected in-house in January 1966. Its field of view (8 in.) should be ideal in view of the photometric finding that the integral scale of the jet is of the order of 4 inches. Gun development has progressed to the point where data rounds may soon be obtained using the instruments developed at CARDE. The necessity of enhancing the wake ionization to provide sufficient signal amplitude for some of the instruments is becoming apparent.


Descriptors :   *HYPERVELOCITY GUNS , *TURBULENCE , *WAKE , ANEMOMETERS , BALLISTICS , DOPPLER EFFECT , ELECTRON BEAMS , ELECTRON DENSITY , HYPERVELOCITY PROJECTILES , LASERS , MEASUREMENT , MICROWAVES , PHOTOGRAPHY , PLASMAS(PHYSICS) , RUBY , SCATTERING , SPARKS , VELOCITY


Subject Categories : Test Facilities, Equipment and Methods
      Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE