Accession Number : AD0754434

Title :   Direct Mixing and Combustion Measurements in Ducted, Particle-Laden Jets.

Descriptive Note : Technical rept.,

Corporate Author : BRIGHAM YOUNG UNIV PROVO UTAH DEPT OF CHEMICAL ENGINEERING

Personal Author(s) : Abbott,Steven W. ; Smoot,L. Douglas

Report Date : 01 DEC 1972

Pagination or Media Count : 13

Abstract : Using water-cooled probes and hot-gas valves, gas-particle samples were withdrawn from the secondary duct of an air-augmented laboratory burner. Using a boron-loaded propellant, air/fuel ratio and secondary duct pressure were varied from 12/1 to 32/1 and from 82 to 127 psia respectively. From sample analysis of chlorine, argon (air tracer), boron, and boron oxide, radial and axial profiles of air, gaseous fuel, particulate fuel and percent of boron combustion were determined. Particles and gases mixed at significantly different rates. Measured gas-phase mixing rates were more rapid than model predictions, which assumed particles to be in equilibrium with gases. Boron combustion efficiency varied markedly with duct position, air/fuel ratio and secondary chamber pressure. (Author)

Descriptors :   (*SOLID ROCKET PROPELLANTS, *COMBUSTION), BORON, JET MIXING FLOW, EXHAUST GASES, SAMPLING, CHROMATOGRAPHIC ANALYSIS

Subject Categories : Combustion and Ignition
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE