항공우주시스템공학회지 (Journal of Aerospace System Engineering)

  • 제17권1호
  • /
  • Pages.68-78
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  • 2023
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  • 1976-6300(pISSN)
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  • 2508-7150(eISSN)
항공우주시스템공학회 (The Society for Aerospace System Engineering)
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RF 방사 신호 차폐를 통한 비상 유압경고등의 비정상 점등 현상의 원인분석 및 개선

Analysis and Improvement of False Alarm Phenomenon of Emergency Hydraulic Warning Light by Shielded RF Radiation Signal

  • 투고 : 2021.08.06
  • 심사 : 2021.09.24
  • 발행 : 2023.02.28
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초록

본 논문에서는 항공기 내의 RF 방사 신호로 인하여 비상 유압 경고등이 비정상으로 점등되는 현상에 대한 개선 방안을 연구하였다. RF 방사 신호의 전자파 간섭으로 비행 중에 비상 유압 시스템의 경고등이 점등되면, 비행 임무 및 안전에 영향을 주어 비행 임무의 효율 저해 및 정비 소요가 발생한다. 따라서, 비상 유압 경고등의 비정상 점등에 대해서 원인 분석 및 고장탐구를 수행하였다. RF 방사 신호의 경로에 있는 항공기의 동체 하부 복합체 스트립을 차폐하여 비상유입지시계로 유입되는 RF 방사 신호를 차단하도록 개선하였다. 또한, 지상과 비행 모니터링을 통해 개선 방안을 적용한 결과도 함께 기술하였다.

In this paper, improvement measures were studied for false alarm (abnormal lighting) of emergency hydraulic warning light due to RF radiation signals in aircraft. When the warning lamp of the emergency hydraulic system is lit during flight due to electromagnetic interference caused by RF radiation signals, it affects flight mission and safety which can result in efficiency degradation and maintenance of flight mission. For false alarm of emergency hydraulic warning light, root cause analysis and troubleshooting were carried out. By shielding a composite strip under fuselage of the aircraft located in the path of the RF radiation signal, the RF radiation signal flowing into the emergency hydraulic indicator was blocked. Results of applying the improvement method through ground and flight monitoring were also described.

키워드

참고문헌

  1. AS5440, "Hydraulic systems, Aircraft, Design and Installation Requirement," April 1998.
  2. MIL-P-19692, "Pumps, Hydraulic, Variable Flow General Specification," Department of Defense, September 1994.
  3. Park, J. J, Beak, S. J and Kim, Y. H, "A Study on Dynamic Characteristics for System Selector Valve in Power Package of KT-1 Hydraulic System using AMESim," The Korean Society for Aeronautical & Space Sciences, November 2011, 992-996.
  4. Tedrick, R. N and Hixson, R. B, "Aircraft Noise and the Airport Community," Federal Aviation Administration, Washington, DC, JAIAA-83-1580, June 1983,
  5. Paul, A. Shahady, "Military Aircraft Noise," Air Force Aero Propulsion Laboratory, Wright-Patterson Air Force Base, Ohio, VOL. 12, NO. 8, August 1975.
  6. Andre, P. G and Wyatt, K, "EMI Trouble shooting Cookbook for Product Designers," The Institution of Engneering and Technology, 2014
  7. MIL-STD-461D, "Requirements for the Control of Electromagnetic Interference Emissions and Susceptibility," Department of Defense, January 1993
  8. Kweon, O. S, Jung, J. C and You, H, "Conductive Plastics for EMI Shielding," Polymer, Vol. 7, No. 6, 1983.
  9. Han, G. Y, Song, D. H, Bae, J. S, and Ahn, D. G, "A Study on Electromagnetic Interference Shielding Effectiveness of the Aluminum film, Conductive Fabric and Nano Carbon black/Carbon Fiber Reinforced Composites," Journal of the Korean Society of Manufacturing Process Engineers 7(4), 10-16, December 2008.
  10. MIL-T-23397B, "Tapes, pressure sensitive adhesive, for masking during paint stripping operations," Department of Defense, September 1998.
  11. SAE-AMS-T-23397, "Tapes, pressure sensitive adhesive, for masking during paint stripping operations," Department of Defense, September 1998.