http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 주제어 : Mast Cover (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
진철규 한국산업융합학회 2023 한국산업융합학회 논문집 Vol.26 No.5
In this study, the sand casting process was applied to design the gating system and perform casting simulation in order to domestically produce the submarine mast cover. Based on simulation results, casting experiments were conducted to produce a soundness prototype. The design concept of the mast cover's gating system was based on the design of bell casting. By arranging eight tower-type gates in a circle at 45° intervals, the flow of melt flowing into each gate was uniform and did not mix with each other, and the velocity of melt was also uniform. The mast cover made of Ni-Al-Bronze alloy has no unfilled parts. However, small porosities and flow marks occurred on the surface in several places. Yield strength and ultimate tensile strength are 279.3 MPa and 675.7 MPa, respectively, and elongation is 21.2%.
-
CMDS 이물 방지를 위한 Mast Cover 추가에 관한 연구
이동기,박상훈 국방기술품질원 2022 국방품질연구논집 Vol.4 No.1
초음속 항공기 시스템에 탑재된 CMDS는 외부 RF와 IR 위협이 발생했을 때 플레어와 채프를 통해 적의 위협에 대응하는 역할을 수행한다. 이와같이 항공기 생존에 필수적인 CMDS 내부에 유류 유입 문제가 발생하였으며, 화약으로 발사되는 채프와 플레어의 특성상 폭발 위험을 방지하기 위한 개선이 필요했다. 이를 개선하기 위해 원인분석 및 개선계획 도출을 수행하였으며, APU Drain Cover, CMDS 앞 구조물 설치, APU Drain Mast 위치 변경 등의 개선안을 도출하였다. 개선된 도출안의 장단점 분석을 통해 APU Drain Cover 개선안을 선정하였으며, 비행시험 및 응력 분석을 통해 개선방안의 타당성과 안전성을 검토하였다.
-
우재혁,차병준,진철규 한국산업융합학회 2023 한국산업융합학회 논문집 Vol.26 No.5
In this study, the mast cover of submarine was reverse engineered and structural analysis was performed. In order to print with the 3D printer, the modeling was reduced to 1/5 size by applying geometric similarity. From the structural analysis results, it was found that the maximum value of equivalent stress generated in the mast cover was 180.9 MPa. This stress value occurs on the inner surface in the major axis. As a result of applying the load condition at a diving depth of 600 m, the mast cover is in a completely elastic state. The 1/5 size model printed on FDM 3D printer with PLA filament was the same as the reverse engineered modeling and it was printed in a perfect shape with no apparent defects. The 1/5 size model printed on PBF 3D printer with SUS316L powder was perfectly manufactured with no apparent defects.
ScienceON
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
