Accession Number : AD0444088


Title :   FURTHER EXPERIMENTAL AND THEORETICAL STUDIES OF UNDEREXPANDED JETS NEAR THE MACH DISC


Corporate Author : GENERAL DYNAMICS/ASTRONAUTICS SAN DIEGO CA


Personal Author(s) : D'Attorre, L ; Harshbarger, F


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/444088.pdf


Report Date : Jul 1964


Pagination or Media Count : 48


Abstract : Results of experimental flow visualization studies in the neighborhood of the Mach disc in under expanded, inviscid jets are presented. The cases include sonic orifices, conical nozzles, Foelsch coordinate nozzles, and some full scale, in flight missile data. The exit to ambient static pressure ratios go up to 300 and the ambient Mach numbers go up to 4.3. In each case studied the method of Bowyer, D'Attorre, and Yoshihara appears to provide a reasonable technique for predicting the size and axial position of the Mach disc. In addition it is shown that the curvature in the Mach disc must be considered if a consistent triple point calculation is to be made.


Descriptors :   *FLUID FLOW , FLOW VISUALIZATION , SUBSONIC FLOW , SUPERSONIC FLOW , SCIENTIFIC RESEARCH , HYPOBARIC CONDITIONS , CONICAL NOZZLES , PHOTOGRAPHIC RECORDING MEDIA , EXPERIMENTAL DATA , WIND TUNNELS


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE