EFFECTS OF DIFFUSION PUMP OIL CONTAMINATION ON THE REFLECTANCE CHARACTERISTICS OF VARIOUS SURFACES
Abstract
During thermal testing in a space simulation chamber, the extent of diffusion pump oil contamination on all important surfaces should be determined. This information and an understanding of the reflectance characteristics of the oil contaminated surfaces would contribute to a more reliable interpretation of the thermal test data. Hence, an experimental study was made of the effects of diffusion pump oil contamination on the reflectance and radiation distribution of four types of surfaces found in space simulation chambers. The total reflectance and angular distribution measurements were made in the radiation wave-length range from 0.4 to 1.2 microns. The spectral reflectance measurements were made in the radiation wavelength range from 0.35 to 10 microns. These data were obtained as a function of oil film thickness, angle of incidence, wavelength, and substrate material. Contamination of surfaces caused by diffusion pump oil backstreaming alters the reflectance characteristics of the substrate-oil film combinations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1966
- Accession Number
- AD0635897
Entities
People
- E. C. Pinion
Organizations
- Arnold Engineering Development Complex