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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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A Study on Lightweight Ti-6Al-4V High-Pressure Gas Cylinder for Rapid Cooling of Airborne Electro-Optical/Infrared Sensor

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

  • Jihun Bae (Missile Research Institute, Agency for Defense Development) ;
  • Namhwan Kim (Missile Research Institute, Agency for Defense Development)
  • 배지훈 (국방과학연구소 미사일연구원) ;
  • 김남환 (국방과학연구소 미사일연구원)
  • Received : 2024.07.29
  • Accepted : 2024.09.23
  • Published : 2024.12.05
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Abstract

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.

Keywords

Acknowledgement

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

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