| Budget Amount *help |
¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2019: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Outline of Final Research Achievements |
This study addressed “pipe chilldown” in the sequences of liquid-propulsion rocket launches, which requires a long time and huge cost. A method to coat the inner surface of pipes with a low-thermal conductive layer was proposed and tested to improve the chilldown process. Some modifications including arrangement of openings were performed to improve the performance of the layer. Additionally, we developed a new observation method for cryogenic fluid using capacitance. The flow dynamics of the two-phase flow during chilldown was revealed using the developed device.
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