ECSS-Q-70-09A, SPACE PRODUCT ASSURANCE: MEASUREMENT OF THERMAL-OPTICAL PROPERTIES OF THERMAL CONTROL MATERIALS (29-AUG-2003)

ECSS-Q-70-09A, SPACE PRODUCT ASSURANCE: MEASUREMENT OF THERMAL-OPTICAL PROPERTIES OF THERMAL CONTROL MATERIALS (29-AUG-2003)., The thermo-optical properties of materials are of importance to enable the calculation of the thermal housekeeping and radiative heat transfer. This Standard describes the methodology, instruments, equipment and samples, used to calculate the thermo-optical properties of thermal-control materials, i.e. solar absorptance [αs or αp] and the infrared emittance [εh or εn]. In general this procedure has been written in connection with instruments and equipment available at ONERA, INTESPACE and ESTEC; however, any contractor is encouraged to built up his own instrument or equipment provided the accuracy of the results is equivalent to the one specified herein.