한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제18권4호
  • /
  • Pages.343-349
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  • 2015
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  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
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판스프링방식 착륙장치의 러그파손 개선 연구

A Study of the Lug Fracture Improvement for Composite Leaf Spring Landing Gear

  • 심대성 (국방기술품질원 사천센터) ;
  • 장덕현 (한국항공우주산업(주) UAV팀) ;
  • 박차환 (국방기술품질원 정책기획실) ;
  • 김정훈 (국방기술품질원 사천센터)
  • Shim, Daisung (Sacheon Center, Defense Agency for Technology and Quality) ;
  • Jang, Deakhyeon (UAV Team, Korea Aerospace Industries, Ltd.) ;
  • Park, Chahwan (Policy Planning Department, Defense Agency for Technology and Quality) ;
  • Kim, Jounghun (Sacheon Center, Defense Agency for Technology and Quality)
  • 투고 : 2015.03.13
  • 심사 : 2015.07.24
  • 발행 : 2015.08.05
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초록

This is a study for the improvement of the fractured lug structure that connects the landing gear to the fuselage of the aircraft using the composite leaf spring landing gear. The lug surface was analyzed to find out the cause of fracture. The lug was destroyed by the crack initiation and propagation under the repeated stresses. The frictional wears of the lug structure were proceeded and that affected adversely to the crack. Also, the square protrusion of the lug has a weak shape to bring about stress concentration. The design changes were conducted and the test was performed to verify changed design results.

키워드

참고문헌

  1. Michael C.Y.NIU, "Airframe Structure Design," Lockheed Aeronautical Systems Company, pp. 464-460, 1988.
  2. Norman S. Currey, "Aircraft Landing Gear Design: Principles and Practices," Lockheed Aeronautical Systems Company, pp. 85-88, 1988.
  3. Isaac M. Daniel and Ori Ishai, "Engineering Mechanics of Composite Materials," Oxford University Press, pp. 4-6, 1994.
  4. Mel M. Schwartz, "Composite Materials Handbook," MeGraw-Hill, pp. 7.54-7.60, 1992.
  5. D. M. Kim, M. K. Hur and Kee-Bhum Lee, "A Study on th Shock Absorbing for Composite Leaf Spring Landing Gear," The Korean Society for Aeronautical & Space Sciences, Vol. 24, No. 2, pp. 85-94, 1996.
  6. S. W. Choi, S. M. An, "Dynamic Characteristics Analysis for Composite Landing Gear Strut," The Korean Society for Aeronautical & Space Sciences, The Autumm Symposium, pp. 429-432, 2003.
  7. AMS 5629, "Steel, Corrosion-Resistant, Bars, Wire, Forgings, and Extrusions 13Cr-8.0Ni-2.2Mo-1.1Al".

피인용 문헌

  1. Manipulation of impact feedbacks by using Novel mechanical-adaptor mechanism for UAV undercarriage applications vol.70, 2017, https://doi.org/10.1016/j.ast.2017.07.021