This paper is about improvements to prevent the crack on welding parts of bleed air duct and vent tube in Advanced Trainer ECS owing to vibration. The configurations and the path of vent tube should be changed to prevent the crack. To assure the result of improvements, measured the status of each pressure condition attaching pressure censers on duct and vent tube. The result of life analysis shows that a crack does not happen on improved configuration while a crack initiates after 19th flight and thru cracking could happen after the 30th flight on previous configuration.
목차
Abstract 1. 서론 2. 본론 2.1 결함위치 및 형상 2.2 원인분석 2.3 개선방안 검토 2.4 채택 개선안 3. 검증 및 분석 3.1 개선형상 응력측정 3.2 개선안에 대한 ECS 성능 검증 3.3 개선안 신뢰성 검토 4. 결론 References
키워드
Advanced Trainer(고등훈련기)ECS(Environmental Control System 환경제어계통)Air Duct(공기배관)Vent Tube(벤트 튜브)Bleed Air(고온압축공기)
저자
조연식 [ Yeon-Sik Cho | Member, Defense Agency for Technology and Quality ]
Corresponding Author
유영수 [ Young-Soo Yu | Defense Agency for Technology and Quality ]
김명호 [ Myoung-Ho Kim | KAI(Korea Aerospace Industries) ]