Earticle

초록

영어

For a long-term space mission, filling process of cryogenic liquid propellant is operated on a space vehicle in space. A vent process during transfer and filling of cryogenic propellant is needed to maintain the fuel tank pressure at a safe level due to its volatile characteristic. It is possible that both liquid and vapor phases of the cryogenic propellant are released simultaneously to outer space when the vent process occurs under low gravity environment. As a result, the existing filling process with venting not only accompanies wasting liquid propellant, but also consumes extra fuel to compensate for the unexpected momentum originated from the vent process. No-Vent Fill (NVF) method, a filling procedure without a venting process of cryogenic liquid propellant, is an attractive technology to perform a long-term space mission. In this paper, the preliminary experimental results of the NVF process are described. The experimental set-up consists of a 9-liter cryogenic liquid receiver tank and a supply tank. Liquid nitrogen (LN2) is used to simulate the behavior of cryogenic propellant. The whole situation in the receiver tank during NVF is monitored. The major experimental parameter in the experiment is the mass flow rate of the liquid nitrogen. The experimental results demonstrate that as the mass flow rate is increased, NVF process is conducted successfully. The quality and the inlet temperature of the injected LN2 are affected by the mass flow rate. These parameters determine success of NVF.

목차

Abstract
 1. INTRODUCTION
 2. EXPERIMENT
  2.1. Configuration of a NVF experiment apparatus
  2.2. NVF experiment process and the conditions
  2.3. Confirmation experiment for the inlet condition
 3. RESULTS
  3.1. NVF experiment results
  3.2. Results of the confirmation experiment
 4. CONCLUSIONS
 ACKNOWLEDGMENT
 REFERENCES

키워드

저자

• Youngcheol Kim [ Korea Advanced Institute of Science and Technology, Daejeon, Korea ] Corresponding author
• Mansu Seo [ Korea Advanced Institute of Science and Technology, Daejeon, Korea ]
• Donggyu Yoo [ Korea Advanced Institute of Science and Technology, Daejeon, Korea ]
• Sangkwon Jeong [ Korea Advanced Institute of Science and Technology, Daejeon, Korea ]

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