Earticle

초록

영어

In order to increase thrust of the space launch vehicle, liquid oxygen as an oxidizer and kerosene or liquid hydrogen as a fuel are generally used. The oxidizer tank and fuel tanks are manufactured by composite materials such as CFRP (Carbon Fiber Reinforced Plastic) to increase pay load. The thermal stress of the cryogenic propellant tank should be considered because it has large temperature gradient. In this study, to confirm the design integrity of the oxidizer tank of liquid oxygen, a numerical analysis was conducted on the thermal stress and temperature distribution of the tank for various charging speed of the cryogenic fluid from 100 ~ 900 LPM taking into account the evaporation rate of the liquid nitrogen by convective heat transfer outside the tank and boiling heat transfer inside the tank. The thermal stress was also calculated coupled with the temperature distribution of the CFRP tank. Based on the analysis results, the charging speed of the LN2 can majorly affects the charging time and the resultant thermal stress.

목차

Abstract
1. 서론
2. CFRP 극저온 열전도도 측정
2.1. CFRP 시편
2.2. 열전도도 특성평가장치 구성
2.3. 열전도도 측정 방법
2.4. CFRP 열전도도 측정 결과
3. 열전달 및 열응력 해석 모델
3.1. 충전 유량에 따른 산화제 탱크 내 열전달 특성
3.2. 액체 수위변화
3.3. 열전달 및 열응력 해석 모델
4. 해석 결과
4.1. 유체 충전 속도에 따른 최대 열응력 비교
4.2. 탱크 내부 상/하단부 열응력
4.3. 유체 충전 속도에 따른 충전 시간 및 필요 액체질소량
5. 결론
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• Seungmin Jeon [ Changwon National University, Changwon, Korea ]
• Dongmin Kim [ Changwon National University, Changwon, Korea ]
• Jungmyung Kim [ Changwon National University, Changwon, Korea ]
• Sooyoung Choi [ ANH Structure, Jinju, Korea ]
• Seokho Kim [ Changwon National University, Changwon, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537