Accession Number : AD0626736

Title :   ON ACOUSTIC RESONANCE IN SOLID PROPELLANT ROCKETS,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : MCClure,F. T. ; Hart,R. W. ; Bird,J. F.

Report Date : 19 SEP 1959

Pagination or Media Count : 68

Abstract : Attention is drawn to the fact that the solid propellant must, in general, be considered as one of the acoustic media in a rocket motor. The viscoelastic properties of the solid along with those of the burned gases determine the characteristic modes of the system corresponding to the particular boundary conditions imposed on these media by the metal components. In addition these properties of the media contribute strongly to the selection of the regions of stability and instability of the system and therefore to the intermittent and sporadic nature characteristic of resonant burning in solid propellant motors. Calculations are carried out to illustrate the general nature of the phenomenon, and the relationship of these studies to a variety of experimental observations is discussed. (Author)

Descriptors :   (*SOLID PROPELLANT ROCKET ENGINES, ACOUSTICS), (*SOLID PROPELLANTS, ACOUSTICS), RESONANCE, COMBUSTION CHAMBER GASES, BOUNDARY LAYER, STABILITY, VISCOELASTICITY, PYROLYSIS

Subject Categories : Acoustics
      Combustion and Ignition
      Solid Propellant Rocket Engines
      Solid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE