Numerical and experimental investigation of thermal louvers for space applications
AUTOR(ES)
Muraoka, Issamu, Sousa, Fabiano Luis de, Ramos, Fernando Manuel, Parisotto, Wilson Roberto
FONTE
Journal of the Brazilian Society of Mechanical Sciences
DATA DE PUBLICAÇÃO
2001
RESUMO
Thermal louvers, using movable or rotating shutters over a radiating surface, have gained a wide acceptance as highly efficient devices for controlling the temperature of a spacecraft. This paper presents a detailed analysis of the performance of a rectangular thermal louver with movable blades. The radiative capacity of the louver, determined by its effective emittance, is calculated for different values of the blades opening angle. Experimental results obtained with a prototype of a spacecraft thermal louver show good agreement with the theoretical values.
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