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Performance Evaluation of Inertial Balance for Measuring Mass in Microgravity

마이크로중력환경에서 사용 가능한 관성저울의 성능평가

  • Jang, Hyun-Jin (Space Science Research Team, Korea Aerospace Research Institute (KARI)) ;
  • Lee, Joo-Hee (Space Science Research Team, Korea Aerospace Research Institute (KARI)) ;
  • Choi, Jae-Hyuk (School of Marine System Engineering, Korea Marine and Ocean Univ.) ;
  • Park, Seul-Hyun (Dept. of Mechanical Systems Engineering, Chosun Univ.)
  • 장현진 (한국항공우주연구원 우주과학연구팀) ;
  • 이주희 (한국항공우주연구원 우주과학연구팀) ;
  • 최재혁 (한국해양대학교 기관시스템공학부) ;
  • 박설현 (조선대학교 기계시스템공학과)
  • Received : 2014.07.03
  • Accepted : 2014.09.22
  • Published : 2014.12.01

Abstract

In an effort to develop and implement an inertial balance with high performance, the response characteristics of a load cell, which are some of the critical parameters for optimal system design, were evaluated using a sample object of approximately 100 g under microgravity conditions. To this end, a 15-m drop-tower was used to produce microgravity conditions, and the response characteristics of the load cell were investigated in terms of the variations in the magnitude of the deceleration of the sample object, noting that the mass of a living animal should be determined in microgravity. An analysis of the ratio of the inertial forces clearly demonstrated that the average velocity of a load cell plate should be higher than 0.5 m/s to meet the design requirements.

Keywords

Microgravity;Inertial Balance;International Space Station;Mass Measurement;Drop-Tower;Load Cell

Acknowledgement

Supported by : 한국연구재단

References

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