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http://dx.doi.org/10.5139/JKSAS.2003.31.6.079

Application of Combustion Stabilization Devices to Liquid Rocket Engine  

Sohn, Chae-Hoon (조선대학교 항공우주공학과)
Seol, Woo-Seok (한국항공우주연구원)
Lee, Soo-Yong (한국항공우주연구원)
Kim, Young-Mog (한국항공우주연구원)
Lee, Dae-Sung (한국항공우주연구원)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.31, no.6, 2003 , pp. 79-87 More about this Journal
Abstract
Application of combustion stabilization devices such as baffle and acoustic cavity to liquid propellant rocket engine is investigated to suppress high-frequency combustion instability, i.e., acoustic instability. First, these damping devices are designed based on linear damping theory. As a principal design parameter， damping factor is considered and calculated numerically in the chambers with/without these devices. Next, the unbaffled chambers with/without acoustic cavities are tested experimentally for several operating conditions. The unbaffled chamber shows the peculiar stability characteristics depending on the operating condition and it is found to have small dynamic stability margin. As a result, the acoustic cavity with the present design has little stabilization effect in this specific chamber. Finally， stability rating tests are conducted with the baffled chamber, where evident combustion stabilization is observed, which indicates sufficient damping effect.
Keywords
Combustion Stabilization Devices; Baffle; Acoustic Cavity; Stability Rating Test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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