Accession Number : AD0711420

Title :   ANALYTICAL AND EXPERIMENTAL INVESTIGATIONS OF OSCILLATIONS IN ROCKET MOTOR BAFFLE CAVITIES.

Descriptive Note : Final scientific rept.,

Corporate Author : ILLINOIS INST OF TECH CHICAGO

Personal Author(s) : Torda,T. Paul

Report Date : JUN 1970

Pagination or Media Count : 71

Abstract : Secondary flows induced in cavities with triangular cross-sections, due to an airflow over the mouth of the cavities, were investigated. Two cavities, having apex angles of 30 degrees and 60 degrees, were considered. Flow patterns were obtained for various depths of these cavities. Periodic oscillations were found to exist in the shear layer at the mouth of the cavity. An empirical correlation was obtained between the frequencies of these oscillations and the physical dimensions of the cavity. Additional experiments were carried out for shock excitations of variable depth cavities using a 21 ft. shock tube of rectangular cross-section. (Author)

Descriptors :   (*BAFFLES, FLOW VISUALIZATION), (*LIQUID PROPELLANT ROCKET ENGINES, INJECTORS), TEST METHODS, INTERIOR BALLISTICS, VORTICES, FLOW FIELDS, OSCILLATION, PARTICLES, COMBUSTION, STABILITY

Subject Categories : Combustion and Ignition
      Liquid Propellant Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE