군용항공기 탑재 소프트웨어의 안전필수기능경로분석(SCFTA)모델 개발

고기성¹ ; 고진환²^{, *}

1해군 전력분석시험평가단 감항인증실 전문군무경력관
2경상국립대학교 공과대학 전자공학과 교수

Development of Safety Critical Function Thread Analysis(SCFTA) Model for Military Aircraft Software

Gisung Ko¹ ; Jinhwan Koh²^{, *}

1Senior manager, Office of Airworthiness, Force Analysis Test & Evaluation Group, ROK Navy
2Professor, Dept. of Electronic Engineering, Gyeongsang National University

Correspondence to: ^*Jinhwan Koh Dept. of Electronic Engineering, Gyeongsang National University Jinjudae-ro 501, Jinju-si, Gyeongsangnam-do, 52828, Republic of Korea Tel: +82-55-772-1726 E-mail: jikoh@gnu.ac.kr

초록

군용항공기에 탑재되는 안전필수기능(SCF)에 연관되는 소프트웨어는 안전지원요소(SSE)로 지정되어 보다 엄격한 개발 프로세스를 적용해야 한다. 따라서, 항공기 개발 초기 단계에서 소프트웨어 안전지원요소를 명확히 식별하는 것이 매우 중요하다. 하지만, 구체적인 식별 기준이 분명하지 않고 참고할 만한 과거 사례가 부족하여 개발 현장에서 자주 논란의 대상이 되고 있다. 본 논문에서는 美 공군 감항성 회람 (AC-17-01)의 분석을 통해 군용 항공기 탑재 소프트웨어의 안전필수기능의 경로 분석 모델을 연구하였다. 또한, 관련 연구를 바탕으로 실제 군용항공기 체계개발사업에 적용해 봄으로써 방법의 적합성을 검증하였으며, 군용항공기 탑재 소프트웨어의 안전성과 신뢰성을 확보할 수 있는 경로 분석 모델을 제시하였다.

Abstract

Software related to the safety critical function (SCF) used in military aircraft is designated as a safety support element (SSE), stricter development process should be applied. Therefore, it is very important to clearly identify software safety support elements in the early stages of aircraft development. However, the specific identification criteria are not clear and there are insufficient past cases to refer to, which are frequently subject to controversy at the development site. In this paper, the thread analysis model of the safety critical function of military aircraft software was studied through the analysis of the U.S. Air Force's Airworthiness Circular(AC-17-01). In addition, based on related research, the suitability of the method was verified by applying it to the actual military aircraft system development project, and a route analysis model was presented to ensure the stability and reliability of military aircraft software.

Keywords:

Military Aircraft, Safety Critical Function, MIL-HDBK-516C, Safety Supporting Element, AC-17-01

키워드:

군용항공기, 안전필수기능, 안전지원요소, 미 공군 감항성 회람

References

DAPA, "Military Aircraft Flight Safety Certification Regulation", DAPA Instruction, Number 561, Nov. 2019.
DOD, "MIL-HDBK-516C, Military Airworthiness Certification Criteria," 2003.
US Department of Defense, "AIRWORTHINESS CERTIFICATION CRITERIA", MIL-HDBK-516C, Dec. 2014.
Jin-Gu Heo, Yong-Ho Moon, “Software Development Process of Military Aircraft based on MIL-HDBK-516C”, Journal of Aerospace System Engineering, Vol. 15, No. 3, pp. 71-78, 2021.
MIL-STD-882E System Safety, 2000
US AirForce, "AIRWORTHINESS CIRCULAR Verification Expectation of Section 15 Criteria", AC-17-01, Mar. 2017.