Ernie W. Spisz

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The preliminary results of plume contamination from a 5-pound thrust slngle-doublet, bipropellant rocket engine on the transmittance of quartz and the reflectance of a silicon mo:Loxi_e overcoated aluminum mirror have been presented. Changes in quartz transmittance were found to be significant and were due to both absorption and scattering effects.(More)
A new experimental technique is developed to determine simultaneously the total hemispherical emittance, solar absorptance, and absorptance-emittance ratio for metals at cryogenic temperatures. The method compares the temperature response of thin metal samples to a sinusoidal perturbation of an imposed radiant intensity. Emittance data are presented for(More)
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