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人體相應構造에 依한 健康管理 Ⅲ : Foot Reflexology에 關하여
朴亨夏,池三業,吳成基 釜山水産大學校 1992 論文集 Vol.47 No.-
The result of comparative group strudies on the nature and characteristics of Foot Reflexology using acupuncture as a health treatment to cure the diseases and aches in our body by stimulating a specific part or point of the body are as follows: 1) We can keep in good health by stimulating a specific part of our body. 2) Many neverous systems are concentrated in the foot more sensitive than the hand and it is possible to cure illness using them. 3) We can guess our state of Health from the state of development, and the structure, of our feet. 4) Park Jae-woo's foot theory forms a similar contracted corresponding system of body but in which the tip jount of the toe corresponds to our head. 5) Park's refexology claims that there exists a passage of energy blood which are linked to the blood vessels of body in a direct relationship to the contracted corresponding system enbodied in the feet. 6) Mildred Carter's approach is the structure of the contracted bowels of the body into the feet along with the right center line of the body, placing the right bowels into the right foot and vice versa. 7) Mildred Carter claims that the inside of the feet reflects the corresponding the backbone of the body. 8) Anna kaye's approach shows that two kinds of zones of the body, vertical and horizontal, correspond to these of the feet. 9) Takenouchi theory is a zone therapy which considers important the marginal scope of nerves transmitting in human body. 10) Bowling pin's reflexology is another interpretation of the contracted corresponding system of the foot laying stress on the torso.
Determination of Cyclogram for Liquid-Propellant Rocket Engine
Ha, Seong-Up,Kwon, Oh-Sung,Lee, Jung-Ho,Kim, Byoung-Hun,Kang, Sun-Il,Han, Sang-Yeop,Cho, In-Hyun,Lee, Dae-Sung The Korean Society for Aeronautical and Space Scie 2002 International Journal of Aeronautical and Space Sc Vol.3 No.2
A vertical test stand based on launcher propulsion system was constructed and several tests for the determination of cyclogram were carried out. To make an accurate estimation, static and dynamic pressures were measured and analyzed. Especially, static pressure measurements using fast response sensors without extension tubes were used to determine operation sequence more evidently. The standard operation times of final valves were determined in cold flow tests with an engine head, and fire formation time in combustion chamber was checked in an ignition test with an ignitor only. On the basis of these tests, ignition sequence was established and combustion test cyclogram was finally determined. According to combustion test, test results were well matched with the determined cyclogram within 0.05 sec.
하성업(Seong-up Ha),문일윤(Il-yoon Moon),문인상(Insang Moon),조원국(Won-Kook Cho),이수용(Soo-yong Lee) 한국추진공학회 2014 한국추진공학회 학술대회논문집 Vol.2014 No.12
액체추진제 로켓엔진의 추진성능은 비추력으로 대표되며, 비추력은 추력, 온도, 압력, 추진제 부피유량 등 다양한 계측량으로부터 계산되고, 이 물리량들이 가지는 오차 또한 함께 반영된다. 현재 연소시험장에서 일반적으로 구축된 수준으로는 1초 내의 정확한 비추력 값을 계측할 수 있다고 말할 수 없다. 본 논문에서는 비추력 환산을 위한 계측요소와 그 오차를 살펴보고 비추력 절대값의 한계를 파악하여 보고자 한다. The propulsion performance of liquid propellant rocket engine can be expressed as specific impulse, calculated from measured values such as thrust, temperature, pressure, propellant volume flow, etc, and specific impulse also includes the errors of such values. It is hard to say that accurate specific impulse can be measured within 1 sec. in combustion test stand with conventional measurement system. In this paper measurement values and their errors are reviewed and the limitation of specific impulse evaluation is examined.
하성업(Seong-up Ha),문일윤(Il-Yoon Moon),강상훈(Sang-Hun Kang),문인상(Insang Moon),이수용(Soo-Yong Lee) 한국추진공학회 2012 한국추진공학회 학술대회논문집 Vol.2012 No.5
산화제 과잉 삼중분사기에 대한 설계와 제작이 이루어졌으며, 이를 사용한 단일분사기 예연소기가 제작되어 연소시험을 수행하였다. 1100㎐의 1L 모드 고주파 불안정과 100 ㎐ 저주파 불안정이 관찰되었으며, 연소실 직경 수정과 터뷸런트 링 적용에 의해 고주파 불안정은 억제되었다. 현재는 저주파 압력섭동 억제에 주안을 두고 연구가 진행중에 있다. Uni-element preburners using a oxidizer-rich triplex injector have been designed and tested. During combustion tests 1L mode high-frequency instability of 1100 ㎐ and low-frequency instability of 100 ㎐ were observed. High-frequency instability has been suppressed by reducing chamber diameter and applying turbulent rings in combustion chamber. Recently, research to reduce low-frequency instability is in progress.