한국항공우주학회지 (Journal of the Korean Society for Aeronautical & Space Sciences)

  • 제45권11호
  • /
  • Pages.951-966
  • /
  • 2017
  • /
  • 1225-1348(pISSN)
  • /
  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
권호 표지
DOI QR코드

DOI QR Code

항공기 올레오식 2중 완충기 종류에 따른 특성 비교 연구 Part II. 수치해석 및 비교

Comparative Study on the Several Types of Double-Acting Oleo-Pneumatic Shock Absorbers of Aircraft Part II. Numerical Analysis and Comparison

  • Jeong, Seon Ho (Department of Aerospace Engineering, Inha University) ;
  • Lee, Cheol Soon (Department of Aerospace Engineering, Inha University) ;
  • Kim, Jeong Ho (Department of Aerospace Engineering, Inha University) ;
  • Cho, Jin Yeon (Department of Aerospace Engineering, Inha University)
  • 투고 : 2017.08.03
  • 심사 : 2017.09.26
  • 발행 : 2017.11.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 세 가지 종류의 올레오식 2중 완충기 특성 비교를 위해 첫 단계 연구에서 제안한 수학적 모델을 이용하여 수치해석을 수행하고 완충 특성을 비교하였다. 각 올레오식 2중 완충기 모델에 대해 수치해석 알고리듬을 제시하였으며, 이를 MSC/ADAMS 상용 다물체 동역학 해석 소프트웨어의 사용자 서브루틴으로 구현하였다. 구현된 사용자 서브루틴을 활용하여 압축/신장시험 및 낙하시험에 대한 각종 수치해석을 수행하였으며, 해석 결과의 비교 분석을 통해 올레오식 2중 완충기 유형에 따른 완충거동 특성을 고찰하였다. 또한 결과로부터 항공기 착륙 요구조건에 맞추어 적절한 내부형상 변경 및 완충기 종류 선정을 통해 올레오식 완충기의 충격흡수 성능을 높일 수 있음을 확인하였다.

In this work, numerical analyses are carried out and the behaviors are investigated for three types of double-acting oleo-pneumatic shock absorbers along with the mathematical models proposed in the part I of this work. After presenting each numerical algorithm corresponding to each model, the numerical algorithms are implemented as user-subroutines in MSC/ADAMS commercial multi-body dynamic software. By using the developed user-subroutines, numerical studies are carried out for compression/stretch test as well as drop test. From the comparative studies, we investigated the salient feature of each double-acting oleo-pneumatic shock absorber. Results identifies that it is possible to increase the absorbing efficiency in accordance with the requirements for aircraft landing conditions.

키워드

참고문헌

  1. Currey, N. S., Aircraft Landing Gear Design: Principles and Practices, AIAA Education Series, American Institute of Aeronautics and Astronautics, Inc., Washington, D. C., 1988.
  2. Milwitzky, B., and Cook, F. E., Analysis of Landing Gear Behavior, National Advisory Committee for Aeronautics Technical Report 1154, January 1953.
  3. Kim, D. H., Lim, K. H., Hwang, J. H., Jeon, J. C., Ko, H. Y., and Lee, H. K., "Dynamic Characteristics and Optimal Design of an Aircraft Landing Gear,"Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 21, No. 4, 1993, pp. 37-48.
  4. Daniels, J. N., A Method for Landing Gear Modeling and Simulation with Experimental Validation, National Aeronautics and Space Administration Contractor Report 201601, June 1996.
  5. Lim, J. S., Kim, Y. Y., Kim, S. H., Kim, Y. I., and Lee, G. Y., "Modeling and Validation for Load Analysis of T-50 Aircraft Nose Landing Gear," Proceeding of The Korean Society for Aeronautical and Space Sciences Fall Conference, November 2003, pp. 866-869.
  6. Park, I. K., Choi, S. W., and Jang, J. W., "Impact Analysis of Oleo-pneumatic Nose Strut for Light Aircraft," Aerospace Engineering and Technology, Vol. 6, No. 1, July 2007, pp. 19-28.
  7. Kim, S. G., Kim, C., and Kim, M., "Dynamic Behaviors and Optimal Design of an Aircraft Nose Landing Gear using ADAMS," Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 35, No. 7, January 2007, pp. 612-618. https://doi.org/10.5139/JKSAS.2007.35.7.612
  8. Shin, J. W., Kim, T. U., and Hwang, I. H., "Dynamic Load Analysis of Aircraft Landing Gear," Journal of The Korean Society for Aviation and Aeronautics, Vol. 16, No. 1, January 2008, pp. 1-6.
  9. Jeong, S. H., Cho, J. Y., Kim, J. H., Byun, K. H., and Lee, S. G., "Landing Simulation of Aircraft using RecurDyn," Proceeding of The Korean Society for Aeronautical and Space Sciences Fall Conference, November 2013, pp. 1167-1171.
  10. Lee, K. B., Jeong, S. H., Cho, J. Y., Kim, J. H., and Park, C. Y., "Hard-Landing Simulation by a Hierarchical Aircraft Landing Model and an Extended Inertial Relief Technique," International Journal of Aeronautical and Space Sciences, Vol. 16, No. 3, September 2015, pp. 394-406. https://doi.org/10.5139/IJASS.2015.16.3.394
  11. Lee, C. S., Jeong, S. H., Kim, K. J., Kim, J. H., and Cho, J. Y., "Comparative Study on the Several Types of Double-Acting Oleo-Pneumatic Shock Absorbers of Aircraft: Part I. Mathematical Modeling," Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 45, No. 11, 2017, pp. 939-950. https://doi.org/10.5139/JKSAS.2017.45.11.939
  12. Melik-Zade, N. A., "The Operation of a Two-Chamber Pneudraulic Shock Absorber," FTD-MT-24-964-72, Foreign Technology Division, Wright-Patterson Air Force Base, Ohio, January 1973. (Translated from Russian, Mashinovedeniye, No. 2, 1971, pp. 44-50.)
  13. Nie, H., Qiao, X., Gao, Z., and Zhou, L., "Dynamic Behavior Analysis for Landing Gear with Different Types of Dual-Chamber Shock-Struts," Chinese Journal of Aeronautics, Vol. 4, No. 2, 1991, pp. 235-244.
  14. Nie, H., Lim, K. H., Hwang, J. H., and Kim, D. M., "Dynamic Behavior of Aircraft Landing Gear with Typical Dual-Chamber Shock-Absorbers", Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 25, No. 4, August 1997, pp. 142-152.
  15. Terze, Z., Vrdoljak, M., and Wolf, H., "Numerical Simulation of Landing Aircraft Dynamics," Strojarstvo, Vol. 51, No. 6, 2009, pp. 657-665.
  16. Lee, Y. K., and Kim, K. J., "Ground Resonance Analysis for an Eight-Degrees-of-Freedom Rotorcraft with Double-Stage Oleo-Pneumatic Shock Absorbers," Journal of Aircraft, Vol. 47, No. 5, September 2010, pp. 1647-1655. https://doi.org/10.2514/1.C000226
  17. Jeong, S. H., Cho, J. Y., Kim, J. H., and Park, C. Y., "Calculation of Internal Force and Analysis of a Double-Acting Shock Absorber," Proceeding of The Korean Society for Aeronautical and Space Sciences Spring Conference, April 2015, pp. 284-288.
  18. Cho, J. Y., and Kim, S. J., "Discontinuous Time-Integration Method for Dynamic Contact/Impact Problems," AIAA Journal, Vol. 37, No. 7, July 1999, pp. 874-880. https://doi.org/10.2514/2.7536
  19. Bazaraa, M. S., Sherali, H. D., and Shetty, C. M., Nonlinear Programming - Theory and Algorithms, 2nd Ed., John Wiley & Sons, Inc., New York, 1993.