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In an ejector pulse jet engine in order to improve its specific performance
https://doi.org/10.15518/isjaee.2024.08.059-073
Abstract
The problem of studying the operating cycle of a pulse jet engine is important in the context of the occurrence of vibration combustion, as well as the transition of combustion to detonation. The characteristics of a detonation-combustion pulse jet engine should be significantly higher than the characteristics of air-breathing jet engines. The article presents the results of a search for ways to increase the specific performance of a valveless ejector pulse jet engine. The results of fire tests of engines with partial conversion of the original fuel and generation during the operating cycle of peroxides and active centers obtained during cold-flame reactions are presented. As a result of the experiments, a displacement of the combustion zones in the engine downstream into the region of the recirculation zone was obtained. The numerical modeling performed showed agreement with experiment acceptable for engineering calculations. An increase in engine jet thrust was obtained due to partial fuel conversion and a shift in the ignition zone. The transition of combustion to detonation leads to a significant reduction in engine life. The results obtained and a new method of influencing the work process based on a shift in the combustion zone are discussed. It is shown that an increase in the combustion rate of the air-fuel mixture leads to a change in the acoustic feedback mechanism.
About the Authors
K. V. Migalin
Research and production company «ROTOR»
Russian Federation
Russian Federation
Konstantin V. Migalin - Ph. D. of Engineering Sciences, General Manager SPC «Rotor».
445143, Samara region, Tolyatti, Stavropol microdistrict, village Podstepki, Rodiny str., 32
I. P. Boychuk
Limited Liability Company «Sigmatek»
Russian Federation
Russian Federation
Igor P. Boychuk - Ph. D. of Engineering Sciences, Associate Professor, General Manager LLC «Sigmatek».
191119, St. Petersburg, Dnepropetrovskaya str., building 33 A
A. V. Grinek
Limited Liability Company «Sigmatek»
Russian Federation
Russian Federation
Anna V. Grinek - Ph. D. of Engineering Sciences, Associate Professor, Design Engineer LLC «Sigmatek».
191119, St. Petersburg, Dnepropetrovskaya str., building 33 A
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Review
For citations:
Migalin K.V., Boychuk I.P., Grinek A.V. In an ejector pulse jet engine in order to improve its specific performance. Alternative Energy and Ecology (ISJAEE). 2024;(8):59-73. (In Russ.) https://doi.org/10.15518/isjaee.2024.08.059-073
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