Accession Number:

ADA329657

Title:

Fundamental of Acoustic Instabilities in Liquid-Propellant Rockets

Descriptive Note:

Final rept.

Corporate Author:

CALIFORNIA UNIV SAN DIEGO LA JOLLA

Personal Author(s):

Report Date:

1997-04-14

Pagination or Media Count:

7.0

Abstract:

The objective of this research was to improve understanding of the mechanisms by which flow, mixing and combustion processes are coupled to acoustic fields in liquid propellant rocket motors. Particular attention was focused on analyses of amplification mechanisms coupled with finite rate chemical reactions by use of numerical and analytical methods. A theoretical explanation of empirical correlation of instability boundaries for engine test results for LOXRP-1 rockets was developed on the basis of amplification by finite rate chemical reactions in strained mixing layers. In addition, a new numerical computation of nonlinear amplification mechanisms in LOXGH2 combustion suggested a possible explanation of threshold phenomena found in liquid propellant rockets.

Subject Categories:

  • Liquid Propellant Rocket Engines
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE