한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제27권6호
  • /
  • Pages.714-721
  • /
  • 2024
  • /
  • 1598-9127(pISSN)
  • /
  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
권호 표지
DOI QR코드

DOI QR Code

항공용 전자광학/적외선 센서의 급속 냉각을 위한 경량 Ti-6Al-4V 고압가스용기에 대한 연구

A Study on Lightweight Ti-6Al-4V High-Pressure Gas Cylinder for Rapid Cooling of Airborne Electro-Optical/Infrared Sensor

  • 배지훈 (국방과학연구소 미사일연구원) ;
  • 김남환 (국방과학연구소 미사일연구원)
  • Jihun Bae (Missile Research Institute, Agency for Defense Development) ;
  • Namhwan Kim (Missile Research Institute, Agency for Defense Development)
  • 투고 : 2024.07.29
  • 심사 : 2024.09.23
  • 발행 : 2024.12.05
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

For weight reduction we have applied Ti-6Al-4V, a lightweight and high-strength material, to a high-pressure gas cylinder for rapid cooling airborne electro-optical/infrared sensors. We have designed, manufactured using electron beam welding, and evaluated various performance(e.g., proof pressure tests, cooling tests). As results, a weight reduction of approximately 29 % was achieved compared to the previous gas cylinder made of STS630. Additionally, representative micro-structures that improve mechanical properties, such as acicular α' phase Martensite and Widmanstatten structure, were observed in the fusion zone. Furthermore, the cooling performance was successfully met under even high-temperature conditions.

키워드

과제정보

이 논문은 2024년 정부의 재원으로 수행된 연구 결과임(924012318).

참고문헌

  1. W. Stecz and K. Gromada, "Determining UAV flight trajectory for target recognition using EO/IR and SAR," Sensors, Vol. 20, 2020.
  2. B. Kim, M. Kim, and Y. Chae, "Background registration-based adaptive noise filtering of LWIR/MWIR imaging sensors for UAV applications," Sensors, Vol. 18, 2018.
  3. M. Stamate, C. Pupaza, F. Nicolescu, and C. Moldoveanu, "Improvement of hexacopter UAVs attitude parameters employing control and decision support systems," Sensors, Vol. 23, 2023.
  4. Z. Chang, X. Cui, H. She, and H. Geng, "Study on two microchannel coolers with different coupling mechanisms of distributed J-T effect and heat transfer," International Journal of Refrigeration, Vol. 145, pp. 397-406, 2022.
  5. R. Damle and M. Atrey, "The cool-down behaviour of a miniature Joule-Thomson(J-T) cryocooler with distributed J-T effect and finite reservoir capacity," Cryogenics, Vol. 71, pp. 47-54, 2015.
  6. N. Tzabar and A. Kaplansky, "A numerical cooldown analysis for Dewar-detector assemblies cooled with Joule-Thomson cryocoolers," International Journal of Refrigeration-Revue International Dufroid, Vol. 44, pp. 56-65, 2014.
  7. Y. Nikravesh, K. Muralidharan, and G. Frantziskonis, "Techno-economic assessment and design optimization of compressed air energy storage using filament wound carbon fiber reinforced plastic pressure vessels," Journal of Energy Storage, Vol. 40, 2021.
  8. T. Balasubramanian, M. Balakrishnan, V. Balasubramanian, and M. Manickam, "Effect of welding processes on joint characteristics of Ti-6Al-4V alloy," Science and Technology of Welding and Joining, Vol. 16, pp. 702-708, 2011.
  9. J. Kar, S. Roy, and G. Roy, "Influence of beam oscillation in electron beam welding of Ti-6AL-4V," International Journal of Advanced Manufacturing Technology, Vol. 94, pp. 4531-4541, 2018.
  10. C. Tsai and L. Wang, "Improved mechanical properties of Ti-6Al-4V alloy by electron beam welding process plus annealing treatments and its microstructural evolution," Materials & Design, Vol.  60, pp. 587-598, 2014.
  11. G. Wang et al., "Effect of base material on microstructure and texture evolution of a Ti-6Al-4V electron-beam welded joint," Acta Metallurgica Sinica-English Letters, Vol. 30, pp. 499-504, 2017.
  12. P. Wanjara, M. Brochu, and M. Jahazi, "Ti-6Al-4V electron beam weld qualification using laser scanning confocal microscopy," Materials Characterization, Vol. 54, pp. 254-262, 2005.
  13. ASTM B 348-13, "Standard specification for titanium and titanium alloy bars and billets," ASTM International, 2019.
  14. G. Yan, M. J. Tan, A. Crivoi, F. Li, S. Kumar and C. H. N. Chia, "Improving the mechanical properties of TIG welding Ti-6Al-4V by post weld heat treatment," Procedia Engineering, Vol. 207, pp. 633-638, 2017.
  15. A. S. H. Kabir, X. Cao, J. Gholipour, P. Wanjara, J. Cuddy, A. Birur, and M. Medraj, "Effect of postweld heat treatment on microstructure, hardness, and tensile properties of laser-welded Ti-6Al-4V," Metallurgical and Materials Transactions A, Vol. 43, pp. 4171-4184, June, 2012.
  16. American Institute of Aeroanutics and Astronautics, "Standards: Space systems-metlllic pressure vessels, pressurized structure, and pressure," American Institute of Aeroanutics and Astronautics US, 1999.
  17. B. Z. Maytal, "Clog retard of a vortex throttle Joule-Thomson crtocooler: Further experimental verification," AIP Conference Proceedings, Vol. 1218, pp. 1257-1264, April, 2010.