Investigation of the Flame-Acoustic Wave Interaction during Axial Solid Rocket Instabilities

reportActive / Technical Report | Accession Number: ADA207929 | Open PDF

Abstract:

The major objectives of the program were i to determine the characteristics of solid propellant gas phase flames in rocket motors experiencing axial instabilities and ii to determine the validity of state of the art solid propellant response models. The program was divided into two tasks in order to achieve these objectives. In Task I, the response of sidewall stabilized premixed flames to longitudinal, standing acoustic waves which simulate the oscillations encountered in unstable rocket motors was studied. A premixed flame was chosen for this first phase as it eliminated the need to deal with difficulties arising from the presence of diffusion processes in the flame these were studied in Task II of the program while providing a flame possessing many important features of actual solid propellant flames. A theoretical model of the unsteady behavior of such flames, based upon actual solid propellant response modes, was developed. Solid propellant rocket engines, Combustion instability, Premixed flames, Diffusion flames, Acoustic driving, Damping.

Author(s):
Zinn, B. T. ; Hegde, U. G. ; Jagoda, J. I. ; Daniel, B. R.
Author Organization(s):
GEORGIA INST OF TECH ATLANTA SCHOOL OF AEROSPACE ENGINEERING
Descriptive Note:
Final rept. 1 Feb 1986-31 Jan 1989
Pagination:
0056

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFOSR-TR-89-0599
Contract/Grant Number(s):
AFOSR-84-0082
Task Number(s):
A1
Project Number(s):
2308
Monitor Series:
TR-89-0599, AFOSR
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5_Command and Control; JCA_5.5.2_Task; JCA_5.5_Direct; JCA_1.2.7_Experimentation; JCA_1.2.5_Lessons Learned; JCA_4.5.4_Requirements Definition; JCA_4.5_Operational Contract Support; JCA_5.3_Planning
Modernization Areas:
Fully Networked C3; Microelectronics
Communities of Interest:
Weapons Technologies
Descriptor(s):
*SOLID PROPELLANTS, *SOLID PROPELLANT ROCKET ENGINES, *FLAMES, *ACOUSTIC WAVES, *COMBUSTION STABILITY, RESPONSE, ACOUSTICS, MIXING, DIFFUSION, OSCILLATION, ROCKET ENGINES, DAMPING, THEORY, MODELS, STANDING WAVES, STABILIZATION, VALIDATION
Field(s)/Group(s):
Combustion and Ignition, Solid Propellant Rocket Engines
Keyword(s):
PE61102F, WUAFOSR2308A1
Report Date:
1989 Mar 31