S8  Engenharia Aeroespacial
 
 Title:
DYNAMIC MODELING AND STABILITY ANALYSIS OF A LIQUID ROCKET ENGINE
 
Summary :
ABSTRACT. THE STABILITY OF A LIQUID ROCKET ENGINE (LRE) HAS BEEN EXTENSIVELY STUDIED IN FOREIGN SPACE PROGRAMS, MAINLY BECAUSE THE COMBUSTION CHAMBER, BY ITSELF, IS A SOURCE OF UNSTABLE PROCESSES. THE NEXT PHASE OF THE BRAZILIAN SPACE PROGRAM REQUIRES A RELIABLE ENGINE TO FULFILL THE MISSION GOALS. THUS, UNDERSTANDING AND PREDICTING THE INFLUENCE OF SELF-OSCILLATING PROCESS IS A NECESSITY. IN THE PRESENT WORK, IT IS MODELED SEVERAL COMPONENTS OF A LRE, WHICH IS ABLE TO BE PART OF THE UPPER STAGE OF THE BRAZILIAN VLS-2 ROCKET. THE COMBUSTION CHAMBER, THE IN-JECTOR HEAD, THE COOLING JACKET AND THE PIPELINES CONSTITUTE A SYSTEM THAT IS SIMULATED BY MEANS OF THE MATLAB/SIMULINK. AFTERWARDS, THE STABILITY OF THE SYSTEM IS ANALYZED FOR THREE PARAMETERS OF GREAT IMPORTANCE FOR SUCH ANALYSIS. THE STATED PROBLEM IS SOLVED BY THE CONSTRUCTION OF A REGION OF STABILITY, USING TWO CRITERIA, MIKHAILOV AND HERMITE-BIEHLER, TO FIND OUT THE STABILITY LIMITS. KEYWORDS: LIQUID ROCKET ENGINE, LIQUID PROPULSION, ROCKET ENGINE, DYNAMIC MODELING, STABILITY ANALYSIS.  
 
Author :
Ges, Luis Carlos Sandoval
Santana Jr., Avandelino 0
 
 
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