A Study on the Necessity of Fixed Manufacturing Processes to Ensure Airworthiness of Aircraft Engines

Hyukjoon Kwon; Jiyoon Kim; Insu Son

doi:10.6108/KSPE.2025.29.6.075

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2025 Vol.29, Issue 6 Preview Page

TECHNICAL PAPERS

A Study on the Necessity of Fixed Manufacturing Processes to Ensure Airworthiness of Aircraft Engines 항공엔진 감항성 확보를 위한 제조공정 확정 및 관리 필요성에 대한 고찰

31 December 2025. pp. 75-82

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Abstract

Aircraft engines operate under extreme conditions of high temperature, high pressure, and high rotational speed, and therefore, the failure of Life-Limited Parts can lead to catastrophic accidents. In this paper, failure cases of Life-Limited Parts caused by material defects and anomalies in manufacturing processes are analyzed, and the key elements of fixed process control required by civil and military airworthiness standards are identified. The necessity of establishing and maintaining fixed manufacturing processes to ensure conformity with design intent is demonstrated from both technical and regulatory perspectives. Furthermore, strategies for effectively implementing fixed process control are proposed, including the management and standardization of key process parameters, design intent substantiation based on fixed processes, and supply chain management through engineering approval systems.

Keywords

Airworthiness Standards

Fixed Processes

Life-Limited Parts

Change Control

Key Process Parameters

항공엔진은 고온, 고압, 고속 회전이라는 극한 운용조건에서 작동하며, 이에 따라 수명제한부품의 파손은 치명적인 사고로 이어질 수 있다. 본 논문에서는 재료 결함 및 제조공정 상의 이상으로 인한 수명제한부품의 파손 사고 사례를 분석하여, 민간 및 군용 감항기준에서 요구하는 제조공정 확정 관리의 핵심 요소들을 도출하였으며, 설계 의도 충족을 위한 제조공정 확정과 그 유지관리 필요성을 기술적, 제도적으로 논증하였다. 또한, 제조공정 확정 관리를 효과적으로 수행하기 위한 방안으로 핵심 공정변수 관리 및 표준화, 확정 공정 기반의 설계 의도 입증, 엔지니어링 승인 시스템 기반의 공급망 관리 전략을 제언하였다.

키워드

감항기준

확정 제조공정

수명제한부품

변경 관리

핵심 공정변수

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Information

Publisher :The Korean Society of Propulsion Engineers
Publisher(Ko) :한국추진공학회
Journal Title :Journal of the Korean Society of Propulsion Engineers
Journal Title(Ko) :한국추진공학회지
Volume : 29
No :6
Pages :75-82
Received Date : 2025-07-07
Revised Date : 2025-09-12
Accepted Date : 2025-10-01
DOI :https://doi.org/10.6108/KSPE.2025.29.6.075

Journal of the Korean Society of Propulsion Engineers ISSN:1226-6027(Print) 2288-4548(Online) 한국추진공학회지

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