An Analytical and Experimental Evaluation of Shadow Shields and Their Support Members
For long-duration interplanetary missions involving cryogenic propellants, it becomes necessary to reduce the heat flux into propellant tanks to extremely low values. Radiation is a significant mode of heat transfer in space. Two forms of radiation barriers which effectively reduce radiant heat transfer are multilayer insulation, which consists of many closely spaced, highly reflective layers separated by low-conducting spacers, and shadow shields, consisting of few layers but spaced farther apart to allow heat to escape to the surrounding space. Studies have shown that if the major radiant heat load is unidirectional, such as for a sun-oriented spacecraft, shadow shields can provide performance superior to multilayer insulation.
KeywordsHeat Transfer Rate Radiant Heat Transfer Test Tank Axial Temperature Gradient Heat Transfer Result
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