Accession Number : AD0505406

Title :   Molecular Sink Vacuum Friction Test.

Descriptive Note : Final rept. Mar-Nov 69,

Corporate Author : TRW SYSTEMS GROUP REDONDO BEACH CALIF

Personal Author(s) : Hammel,Robert L.

Report Date : NOV 1969

Pagination or Media Count : 131

Abstract : A set of boundary layer friction data was generated in the Jet Propulsion Laboratory Molecular Sink Vacuum Facility for comparison with an identical set of orbital friction data. The test materials, run profiles, and experiment elements were identical to those used in previous AFRPL In-Space Friction Tests. Comparison of the results from these two tests shows excellent agreement between the orbital and the Molecular Sink results. This is in contrast to other oil pumped ultrahigh vacuum tests which showed systematically lower friction for eight of sixteen material couples studies. This report presents the experimental results of this study and reviews these in light of the satellite data.

Descriptors :   (*SPACE SIMULATION CHAMBERS, *FRICTION), (*ORBITS, FRICTION), VACUUM, CONTROLLED ATMOSPHERES, VELOCITY, CONTAMINATION, STRAIN GAGES, SPACE ENVIRONMENTS, CORRELATION TECHNIQUES, TEST FACILITIES (U) FILMS, POLYMERS, EPOXY RESINS, SATELLITES(ARTIFICIAL), LAUNCH VEHICLES, LUBRICANTS, METALS, ALLOYS

Subject Categories : Metallurgy and Metallography
      Plastics
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE