Development of a new MLI for orbital cryogenic propulsion systems -thermal performance under one atmosphere to a vacuum

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Miyakita, Takeshi^1^2 ; Kitamoto, Kazuya^1 ; Kinefuchi, Kiyoshi^2 ; Saitoh, Masanori^3 ; Hirai, Tomoyuki^4 ; Sugita, Hiroyuki^1

JAXA RandD Directorate, 2-1-1 Sengen, Tsukuba

305-8505, Japan^1

JAXA Space Technology Directorate i, 2-1-1 Sengen, Tsukuba

305-8505, Japan^2

Orbital Engineering Inc., 1-7-8 Nishikanagawa, Kanagawa

221-0822, Japan^3

Toska Bano'k Co., Ltd., 14 Kanda, Tokyo

101-0042, Japan^4

关键词: Atmospheric environment;    Cryogenic propellant;    Cryogenic propulsion;    Insulation performance;    Multi-layer insulation;    Space exploration mission;    Spray on foam insulation;    Thermal Performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012062/pdf
DOI  :  10.1088/1757-899X/502/1/012062

来源: IOP

【 摘 要 】

The efficient storage of cryogenic propellants is among the key technologies for long-duration space exploration missions. For the orbital transfer vehicle, the required thermal insulation performance is more than ten times higher than that of conventional spray-on foam insulation. Conventional multi-layer insulation blankets are used as excellent insulation for spacecraft in the vacuum environment, but are not usable in the atmospheric environment. A new type of insulation-A load-bearing, non-interlayer-contact spacer MLI (LB-NICS MLI)-has been developed. The insulation performance in both air and vacuum environments is measured with a boil-off calorimeter. According to the test results, LB-NICS MLI is about 3 times superior under 1 atmosphere and 13 times superior under a vacuum, compared to foam insulation.Published under licence by IOP Publishing Ltd.