Accession Number : ADP007954

Title :   Design Techniques for Dual Mode Ram Scramjet Combustors,

Corporate Author : JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Personal Author(s) : Billig, F. S. ; Corda, S. ; Pandolfini, P. P.

Report Date : DEC 1990

Pagination or Media Count : 20

Abstract : This paper will present a disciplined analytical method that describes the different engine operating modes and internal flow structures in dual mode ram-scramjet combustors. Solutions for physical systems are dependent on empirical data bases from unit process experiments which include shock trains, jet penetration and mixing. A synopsis of an experimental data base will be presented and the method by which it is embodied in the analytical models will be discussed. The models will then be applied to develop design procedures for combustor-inlet isolators, discrete hole injectors, controlled shear layer mixing and will establish the efficacy of sudden expansion steps for anchoring shock trains.

Descriptors :   *COMBUSTORS, *RAMJET ENGINES, DATA BASES, DUAL MODE, ENGINES, EXPANSION, EXPERIMENTAL DATA, FLOW, INJECTORS, INLETS, INTERNAL, LAYERS, MIXING, MODELS, PAPER, PENETRATION, SHOCK, STRUCTURES.

Subject Categories : Combustion and Ignition
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE