Analysis of a spacecraft instrument ball bearing assembly lubricated by a perfluoroalkylether [PDF]
An analysis of a spacecraft instrument ball bearing assembly, subjected to a scanning life test, was performed to determine the possible case of rotational problems involving these units aboard several satellites.
Buckley, D. H. +2 more
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Present state of knowledge of the upper atmosphere 1990: An assessment report [PDF]
NASA is charged with the responsibility to report on the state of the knowledge of the Earth's upper atmosphere, particularly the stratosphere. Part 1 of this report, issued earlier this year, summarized the objectives, status, and accomplishments of the
Kurylo, M. J. +3 more
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Reaction of perfluoroalkylpolyethers (PFPE) with 440C steel in vacuum under sliding conditions at room temperature [PDF]
Reactions of perfluoroalkylpolyethers (PFPE: Fomblin, Demnum and Krytox) were studied during the sliding contact of stainless steel specimens under ultrahigh vacuum conditions. All three fluids reacted with the steel specimens during sliding.
Morales, Wilfredo, Mori, Shigeyuki
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Encapsulation task of the low-cost silicon solar array project. Investigation of test methods, material properties, and processes for solar cell encapsulants [PDF]
The results of an investigation of solar module encapsulation systems applicable to the Low-Cost Solar Array Project 1986 cost and performance goals are presented.
Baum, B., White, R. A., Willis, P. B.
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Glossary of International Climate Policy Terms [PDF]
Environmental Economics and Policy,
Koch, Tobias, Michaelowa, Axel
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A summary of laboratory testing performed to characterize and select an elastomeric O-ring material to be used in the redesigned solid rocket motors of the space transportation system [PDF]
An elastomeric O-ring material is used in the joints of the redesigned solid motors (RSRM's) of the National Space Transportation System (NSTS). The selection of the O-ring material used in the RSRM's was a very thorough process that included efforts by ...
Turner, J. E.
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Halogen occultation experiment (HALOE) optical witness-plate program [PDF]
An optical witness plate program was implemented to monitor buildup of molecular contamination in the clean room during the assembly and testing of the Halogen Occulation Experiment (HALOE) instrument.
Harvey, Gale A., Raper, James L.
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Bromine-photosensitized degradation of perfluorooctanoic acid. [PDF]
Sci RepPocorobba JC, Braiman MS.
europepmc +1 more source
Report drawn up on behalf of the Committee on the Environment, Public Health and Consumer Protection on the proposal from the Commission of the European Communities to the Council (Doc. 282/77) for a recommendation on the fluorocarbons in the environment. EP Working Documents 1977-1978, Document 417/77. 7 December 1977 [PDF]
, 1977 Jahn, H.E.
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