Journal of Korean Society of Industrial and Systems Engineering (산업경영시스템학회지)

Society of Korea Industrial and System Engineering (한국산업경영시스템학회)
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A Study on Reliability Growth through Failure Analysis by Operational Data of Avionic Equipments

항공전자장비의 운용자료 분석을 통한 신뢰성 성장 연구

  • Jo, In-Tak (Korea Aerospace Industries, LTD.) ;
  • Lee, Sang-Cheon (Division of Industrial Systems Engineering, ERI, Gyeongsang National University) ;
  • Park, Jong Hun (Department of Business Administration, Catholic University of Daegu)
  • 조인탁 (한국항공우주산업) ;
  • 이상천 (경상대학교 산업시스템공학부) ;
  • 박종훈 (대구가톨릭대학교 경영학과)
  • Received : 2013.11.14
  • Accepted : 2013.12.04
  • Published : 2013.12.31
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Abstract

In aerospace industry, MTBF (Mean Time Between Failure) and MFTBF (Mean Flight Time Between Failure) are generally used for reliability analysis. So far, especially to Korean military aircraft, MFTBF of avionic equipments is predicted by MIL-HDBK-217 and MIL-HDBK-338, however, the predicted MFTBF by military standard has a wide discrepancy to that of real-world operation, which leads to overstock and increase operation cost. This study analyzes operational data of avionic equipments. Operational MFTBF, which is calculated from operational data, is compared with predicted MFTBF calculated conventionally by military standard. In addition, failure rate trend is investigated to verify reliability growth in operational data, the investigation shows that failure rate curve from operational data has somewhat pattern with decreased failure rate and constant failure rate.

Keywords

References

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