Accession Number:

AD0626739

Title:

THE INFLUENCE OF EROSIVE BURNING ON ACOUSTIC INSTABILITY IN SOLID PROPELLANT ROCKET MOTORS,

Descriptive Note:

Corporate Author:

JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Personal Author(s):

Report Date:

1960-04-01

Pagination or Media Count:

39.0

Abstract:

The influence of erosivity on the acoustic stability of solid fuel rockets is examined. Allowance is made for a frequency-dependent erosion constant. The theory verifies the stabilizing influence of the steady flow erosivity for propellants having positive erosion constants, with the contrary prediction for those having negative erosion constants. The influence of acoustic erosion is examined and the order in which it contributes is shown to depend on the symmetry of the flow field in the rocket, being quite different for rockets with nozzles at the end as compared to rockets with nozzles in the center. Degenerate and quasi-degenerate cases where erosivity might become a predominant effect are discussed.

Subject Categories:

  • Acoustics
  • Combustion and Ignition
  • Solid Propellant Rocket Engines
  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE