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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Society of Propulsion Engineers
Journal Basic Information
Journal DOI :
The Korean Society of Propulsion Engineers
Editor in Chief :
Volume & Issues
Volume 13, Issue 6 - Dec 2009
Volume 13, Issue 5 - Oct 2009
Volume 13, Issue 4 - Aug 2009
Volume 13, Issue 3 - Jun 2009
Volume 13, Issue 2 - Apr 2009
Volume 13, Issue 1 - Feb 2009
Selecting the target year
Prediction for Slag Mass Accumulation in the Kick Motor
Jang, Je-Sun ; Kim, Byung-Hun ; Cho, In-Hyun ;
Journal of the Korean Society of Propulsion Engineers, volume 13, issue 4, 2009, Pages 1~8
Accumulated slag mass was predicted to estimate accurate performance of kick motor (KM) system. The validation of numerical analysis was performed with mass flow rate measured at the 4th ground test of the KM. The study described here includes the internal flow field of KM at various time steps during burning. Slag mass accumulation was analyzed through the aluminum oxide particle paths to predict slag mass deposition. Numerical analysis to solve both flow field and droplet accumulation was performed with Fluent 6.3 program. Analysing the effects of the acceleration, starting position and diameters of the aluminum oxide particles, total slag mass accumulation was obtained.
Experimental Study on Fuel/Air Mixing using Inclined Injection in Supersonic Flow
Lee, Dong-Ju ; Jeong, Eun-Ju ; Kim, Chae-Hyoung ; Jeung, In-Seuck ;
Journal of the Korean Society of Propulsion Engineers, volume 13, issue 4, 2009, Pages 9~15
The flow of combustor in scramjet engine has supersonic speed so that the residence time and mixing ratio are very important factors for the efficient combustion. This study used open cavity(L/D=4.8) as a fuel/air mixing model. Laser schlieren visualization and pressure measurement were carried out to observe the flow characteristics around a jet orifice and a cavity at the time of fuel injection. As a result of 10ns laser schlieren, unsteady flow which was around the cavity could be observed effectively. Pressure was measured that momentum flux ratio(J) was changed. And the change of critical ignition point could be observed by the momentum flux ratio changed.
Self-Decomposition Characteristic of Concentrated Hydrogen Peroxide with Temperature and Stabilizer
Chung, Seung-Mi ; An, Sung-Yong ; Kwon, Se-Jin ;
Journal of the Korean Society of Propulsion Engineers, volume 13, issue 4, 2009, Pages 16~21
This paper introduces the methods of hydrogen peroxide storage test and storability of concentrated hydrogen peroxide is estimated. Using the method of simple concentration measuring, storability was evaluated. Experiment variables were the amount of stabilizer in hydrogen peroxide, storage temperature, and caps of vessels. The experiments were performed during 8 months to 24 months. High purity hydrogen peroxide had much better storability than hydrogen peroxide with much stabilizer. In addition, the case using paraffin film which did not react with hydrogen peroxide for covering showed better storability. The temperature is very important variable in hydrogen peroxide storage. So, when hydrogen peroxide was under
storability of hydrogen peroxide is much improved.
Feasibility Study of Chemical Propulsion System for Moon Explorer
Han, Cho-Young ; Kim, Bang-Yeop ;
Journal of the Korean Society of Propulsion Engineers, volume 13, issue 4, 2009, Pages 22~29
Development of Moon Explorer-1 (orbiter) is supposed to be commenced in 2017 and launched in 2020. In case of Moon Explorer-2 (lander), it would be slated to start in 2021 and launch in 2025. In this paper conceptual feasibility studies are conducted for the propulsion system applicable to a Moon Explorer. In the first place the availability of monopropellant/bipropellant/electric propulsion system is examined with domestic as well as overseas precedents. Secondly
is estimated by the mission analysis and the propellant budget is calculated accordingly. Subsequently feasibility of a chemical propulsion system for a Moon Explorer is evaluated.
Movable Nozzle Performance Analysis by Using ADAMS
Kim, Joung-Keun ; Jang, Hong-Been ;
Journal of the Korean Society of Propulsion Engineers, volume 13, issue 4, 2009, Pages 30~35
Effective-pivot effects on the thrust vector control performance of the flexible seal nozzle to be used to control the flight direction of missile were investigated by computer simulation.
-Design of experiment technique was applied and ADMAS was used for the surrogate technique. As a result, radial pivot position had more influence upon the nozzle actuating performance than axial pivot position. Connecting method of actuator was also important factor in determining effective-pivot effects on the thrust vector control performance of the flexible seal nozzle.
Study of Optical Tomography for Measurement of Spray Characteristics at High Ambient Pressure
Cho, Seong-Ho ; Im, Ji-Hyuk ; Choi, Ho-Yeon ; Yoon, Young-Bin ;
Journal of the Korean Society of Propulsion Engineers, volume 13, issue 4, 2009, Pages 36~44
Spray cross-section was measured by the Optical Line Patternator (OLP) and Optical Tomography at high ambient pressure. The laser line beam passed through the spray region, then Mie scattered signal and transmitted light were captured. The measured signal was processed to obtain a distribution of attenuation coefficient in spray cross-section. Beer-Lambert's law and mathematical reconstruction methods were used to reconstruct the distribution of attenuation coefficient. Spray became dense at high pressure and attenuation of scattered signal occurred seriously. OLP method, which uses Mie scattered signal, showed limit in compensating attenuation problem in dense spray region. Optical tomography reconstructed spray cross-section well, from transmission rate of light penetrating spray region.
Exergy Analysis of Regenerative Steam-Injection Gas Turbine Systems
Kim, Kyoung-Hoon ; Jung, Young-Guan ; Han, Chul-Ho ;
Journal of the Korean Society of Propulsion Engineers, volume 13, issue 4, 2009, Pages 45~54
An exergy analysis is carried out for the regenerative steam-injection gas turbine systems which has a potential of enhanced thermal efficiency and specific power. Using the analysis model in the view of the second law of thermodynamics, the effects of pressure ratio, steam injection ratio, ambient temperature and turbine inlet temperature are investigated on the performance of the system such as exergetic efficiency, heat recovery ratio of heat exchangers, exergy destruction, loss ratios, and on the optimal conditions for maximum exergy efficiency. The results of computation show that the regenerative steam-injection gas turbine system can make a notable enhancement of exergy efficiency and reduce irreversibilities of the system.
A Study on Fracture Behavior of Scaled Model for Ceramic Dome Port Cover
Hwang, Kwon-Tae ; Kim, Jae-Hoon ; Lee, Young-Shin ; Park, Jong-Ho ; Song, Kee-Hyuck ; Yoon, Soo-Jin ;
Journal of the Korean Society of Propulsion Engineers, volume 13, issue 4, 2009, Pages 55~62
Fracture behavior of ceramic dome port cover on air breathing engine using liquid and solid fuel propulsion system was carried out in this study. Fracture characteristics was tested and estimated using scaled model of ceramic dome port cover by Shock tube. Fracture behavior was obtained by the fracture pressure from pressure sensor and observed the scattering phenomena of fracture specimen using high speed camera. Results obtained from this study can be used in the base data of dome port cover design for an air breathing engine.