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http://dx.doi.org/10.5139/JKSAS.2005.33.1.069

Stability Rating Tests for Optimization of Axial Baffle Length  

Kim, Hong-Jip (한국항공우주연구원 엔진그룹)
Lee, Kwang-Jin (한국항공우주연구원 엔진그룹)
Seo, Seong-Hyeon (한국항공우주연구원 엔진그룹)
Kim, Seung-Han (한국항공우주연구원 엔진그룹)
Han, Yeoung-Min (한국항공우주연구원 엔진그룹)
Seol, Woo-Seok (한국항공우주연구원 엔진그룹)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.1, 2005 , pp. 69-77 More about this Journal
Abstract
To optimize and limit the axial length of the baffle of the KSR-III engine, stability rating tests using pulse gun as one of artificial disturbance devices have been done. Generally a rocket engine can be considered to be dynamically stable if a certain imposed external perturbation or pressure oscillation in rocket combustion chamber could be suppressed within a short time period. Decay time and other parameters for the evaluation of stabilization ability of an engine to external perturbation have been analyzed to quantify stabilization capacity of engine, in other words, dynamic stability margin. Baffle not covering flame zone enough which can be considered as collision region of injector wasn't be able to suppress external perturbation sufficiently. The limit of combustion stability margin of engine is assumed to be 50 mm length baffle of the KSR-III engine.
Keywords
Stability Rating Tests; Combustion Instability; Axial Length of Baffle; External Perturbation; Pulse Gun; Decay Time;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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