The thermal radiation properties of Apollo 11 and 12 fines (soils) are reviewed and presented as a function of wavelength, angle of illumination, and bulk density. The spectral directional reflectance is presented for wavelengths from 0.6 to 2 microns and for angles of illumination of 10, 20, 30, 45, and 60 deg. The normal emittance is presented for wavelengths from 2.5 to 14.5 microns. The solar albedo and total normal emittance as a function of temperature were calculated from the spectral values. The solar albedo for Apollo 11 fines is 0.099 whereas for Apollo 12 fines is approximately 0.119 for angles of illumination of 10 deg and a density of 1600 kg cu m.
Spectral reflectance and emittance of Apollo 11 and 12 lunar material.
AIAA Journal ; 10
1972-08-01
Miscellaneous
No indication
English
Spectral and total emittance of Apollo fines
AIAA | 1975
|NTRS | 1970
|AIAA | 1970
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