RESEARCH ON CHARACTERISTICS OF TURBO JET ENGINE COMBUSTION CHAMBER

Andrius Dubovas,Domantas Bručas

doi:10.3846/aviation.2021.14398

Abstract

The characteristics of the combustion chamber of turbo jet engine with various parameters are examined in this article. The scientific works of other authors analyzing operating parameters of the jet engines were reviewed. Their recommendations were considered. Computer simulations of the combustion chamber were performed using different combustion reactions. The exhaust gas temperature and its dependence on the combustion mixture were determined. A practical study was also carried out, during which the experimental exhaust gas temperature was measured, and the trends of temperature change were determined. After analyzing both theoretical and practical results, the conclusions are presented.

Highlights

The prevalence of jet engines in the 21st century is still growing
The second reason – battery capacity for electric motors is currently too low for long enough flight time. In aviation, such power plants are widespread and widely studied, but there is a lack of information on low-thrust jet engines
As this study aims to determine only the exhaust gas temperature, the Eddy dissipation model (EDM) combustion model is used

Summary

Introduction

While it is common to see these types of engines being used in aviation, there is a new tendency to use them in other areas. The second reason – battery capacity for electric motors is currently too low for long enough flight time. In aviation, such power plants are widespread and widely studied, but there is a lack of information on low-thrust jet engines. This work aims to perform computer simulations and practical tests with a small volume combustion chamber and compare theoretical and practically measured exhaust gas temperatures. The following steps had to be done: perform modeling of the combustion process and a practical test of the combustion chamber to determine the exhaust gas temperature, and compare theoretical and practical results in different operating modes.

Objectives

Methods

Findings

Conclusion