순간 해석 기법을 이용한 PVT 잔량 측정법의 극저온 균일 온도 조건에서의 실험적 연구
Experimental research of Pressure-Volume-Temperature mass gauging method using instantaneous analysis under cryogenic homogeneous condition
서만수(KAIST); 정상권(한국과학기술원); 정영석(한국항공우주연구원); 구동훈(KAIST); 지동진(한국과학기술원 부속 한국과학영재고등학교)
14권 1호, 38~43쪽
초록
In the extreme conditions of launch vehicle in a space, such as cryogenic temperature and low-gravity environment, the mass gauging of remaining propellants becomes a difficult problem. Pressure–volume -temperature (PVT) method is one of the attractive mass gauging methods under low-gravity due to its simplicity and reliability. PVT gauging experiment with various mass flow rates of helium injection is carried out with the experimental apparatus creating cryogenic homogeneous condition as the condition of low-gravity. Experimental results are analyzed by a novel PVT gauging analysis method which considers all instantaneous changes of pressure and temperature in the ullage volume with small time intervals. It is observed that the gauging error from the novel PVT gauging analysis is –0.11% with 2 slpm mass flow rate of helium injection.
Abstract
In the extreme conditions of launch vehicle in a space, such as cryogenic temperature and low-gravity environment, the mass gauging of remaining propellants becomes a difficult problem. Pressure–volume -temperature (PVT) method is one of the attractive mass gauging methods under low-gravity due to its simplicity and reliability. PVT gauging experiment with various mass flow rates of helium injection is carried out with the experimental apparatus creating cryogenic homogeneous condition as the condition of low-gravity. Experimental results are analyzed by a novel PVT gauging analysis method which considers all instantaneous changes of pressure and temperature in the ullage volume with small time intervals. It is observed that the gauging error from the novel PVT gauging analysis is –0.11% with 2 slpm mass flow rate of helium injection.
- 발행기관:
- 한국초전도저온학회
- 분류:
- 전기공학