Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지
DOI QR코드

DOI QR Code

The Effect of the Bolted Joint Stiffness on the Thrust Measurement Stand

볼트의 체결 강성이 추력 시험대에 미치는 영향

  • Received : 2015.12.06
  • Accepted : 2016.06.28
  • Published : 2016.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper is studied on the effect of the bolt joint stiffness on the Thrust Measurement Stand(TMS). TMS is a test stand for thrust performance of the propulsion system, which depends on two factors: The $1^{st}$ is the parallel degree between directions of the thrust vector and action lines of the corresponding measuring load cells for the vector, and the $2^{nd}$ is the orthogonality between action lines of the measuring load cells. Therefore, it is essential to maintain the original shape of the TMS under operating conditions. In this paper, it is examined how the geometric tolerance of the bolt joints and threads of the load cell trains affect the performance of the TMS. Also, some techniques to overcome related problems are proposed.

본 논문은 볼트 체결 강성이 추력 시험대에 미치는 영향을 연구한 것이다. 추력 시험대는 추진기관의 추력 성능을 평가하는 장비로 추력, 피치력, 요력(3 분력) 작용선에 대응하는 3 분력 계측선간의 평행도와 3 분력 계측선의 상호 직각도가 다분력 추력시험대의 성능을 좌우한다. 따라서 시험대의 초기 형상을 작동 상태에서 유지시키는 것이 추력 시험대의 핵심 기능이다. 본 논문에서는 추력 시험대의 볼트 체결과 로드셀 트레인의 나사 체결의 공차 정확도가 추력 시험대에 미치는 현상을 규명하고 이를 극복하는 방안을 제시하였다.

Keywords

References

  1. Block, H.B., Bryant, L., Dicus, J.H., Moore, A.S., Burns, M.E., Solomon, R.F. and Sheer, I., "Techniques Utilized in the Simulated Altitude Testing of a 2D-CD Vectoring and Reversing Nozzle," NASA TM 100872, NASA, Lewis Research Center, 1988.
  2. Lee, K.J., Park, I.S. and Choi, Y.K, "Design Method of the High Accuracy Thrust Stand," Journal of the Korean Society of Propulsion Engineers, Vol. 10, No. 1, pp. 9-17, 2006.
  3. Park, I.S., Lee, K.J., Yoon, I.S. and Kim, J.K., "Modelling Scheme for the Six Components Force Measurements of Solid-propellant Rocket Motors," Journal of the Korean Society of Propulsion Engineers, Vol. 5, No. 3, pp. 79-86, 2001.
  4. Davis, R.L. and Domal, A.F., "Techniques for Successful 6-components Force Measurements of the Solid propellant Rocket Motor," AD 463226, ARO, Inc.
  5. Runyan, R.B., Rynd, J.P., and Seely, J.F., "Thrust Stand Design Principles," 17th Aerospace Ground Test Conference, Nashville, T.N., U.S.A., AIAA-92-3976, July 1992.
  6. Bickford, J.H., Introduction to the Design and Behavior of Bolted Joints, 4th edition, CRC Press, 2008.
  7. Roy, R.K., Design and Behavior of the Bolted Joints, Nutek, Inc., Version 0602, pp. 35
  8. KSA, Limits of Sizes and Tolerances for Metric Coarse Screw Threads, KS B 0211, 1987.
  9. Bray, A. etc, Theory and Practice of Force Measurement, Academic Press, 1990.
  10. Ormond, N.A. "Universal Flexure Joint," US Patent 2966049, 1959.
  11. NASA, "Criteria for Preloaded Bolts," NSTS 08307, Rev. A, NASA, 1998.

Cited by

  1. The Gross Thrust Estimation Technique of Air-Breathing Engine vol.22, pp.3, 2018, https://doi.org/10.6108/KSPE.2018.22.3.097