We compare our proposed radiator with other standard radiators. Table I shows the results of comparison with a heat pipe radiator [3] and a fluid flow type radiator [4]. Radiative heat flux is about 20 W/kg for ordinary radiators and about 400 W/kg for our own. The package volume is about 200 m/m, while ours is about 5000 m/m. Conclusions We propose a new liquid flow type radiator which can be packed up into a comparatively small volume and deployed by pressure of the coolant. An ordinary radiator is about 20 times as heavy as ours, and needs 25 times the package volume. We constructed the radiator and examined its characteristics, both with numerical simulations and experimentally. Simulated results coincided with experiemental results. This, plus the lack on constraint on choosing the coolant flow path, indicates other radiators of this kind can be designed using only numerical simulations. Our plan is now to construct the entire cooling system and to demonstrate the deployment mechanism and the package volume performance. ACKNOWLEDGEMENTS The author acknowledges Dr N. Minoda of the Showa Aluminum Corporation for his help in production of the radiator. He also wishes to acknowledge Dr S. Morimoto and Mr I. Tanaka of Ishikawajima Harima Heavy Industries Co., Ltd. for their help with the experiments. REFERENCES [1] Tanatsugu, N. (1988) IAF-88-217. [2] Offerstedt, P. et al. (1985) AIAA-85-1048. [3] Alario, J. & Offerstedt, P. (1986) AIAA-86-1297. [4] Klann, J.L. & Steiger, P.J. (1985) SAE859089.
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