Thermophysical properties of lunar materials. I - Thermal radiation properties of lunar materials from the Apollo missionsThe successful landings on the moon of the Apollo flights and the return of samples of lunar surface material has permitted the measurement of the thermophysical properties necessary for heat transfer calculations. The characteristics of the Apollo samples are discussed along with remote sensing results which made it possible to deduce many of the thermophysical properties of the lunar surface. Definitions considered in connection with thermal radiation measurements include the bond albedo, the geometric albedo, the normal albedo, the directional reflectance, the bidirectional reflectance, and the directional emittance. The measurement techniques make use of a directional reflectance apparatus, a bidirectional reflectance apparatus, and a spectral emittance apparatus.
Document ID
19740054029
Acquisition Source
Legacy CDMS
Document Type
Other - Collected Works
Authors
Birkebak, R. C. (Kentucky, University Lexington, Ky., United States)