Accession Number : ADA266284


Title :   Performance of Silvered Teflon Thermal Control Blankets on Spacecraft


Corporate Author : AEROSPACE CORP EL SEGUNDO CA MECHANICS AND MATERIALS TECHNOLOGY CENTER


Personal Author(s) : Pippin, G ; Stuckey, W K ; Hemminger, C S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a266284.pdf


Report Date : 15 Mar 1993


Pagination or Media Count : 22


Abstract : Silver-backed fluorinated ethylene propylene Teflon (Ag/FEP) thin film material was used for thermal control in many locations on the Long Duration Exposure Facility (LDEF). The Ag/FEP registered the effects of atomic oxygen, solar ultraviolet radiation, meteoroid and debris impacts, thermal cycling, and contamination. This report summarizes the post-flight condition of the Ag/FEP, compares the results with performance on other spacecraft, and presents lifetime estimates for use under a variety of environmental exposures. Measurements of optical property and mechanical property and surface chemistry changes with exposure conditions, and their significance for design considerations and expected performance lifetimes are reported for material flown on LDEF. The LDEF based data provides detailed information performance of Ag/FEP under relatively long term exposure in low Earth orbit. Comparison of this data with results from short term shuttle flights, Solar Max, SCATHA, other satellites and ground based measurements is made to present a comprehensive summary of the use of this material for spacecraft applications.


Descriptors :   *THERMAL PROPERTIES , *SPACECRAFT , *SILVER , *BLANKETS , *TETRAFLUOROETHYLENE RESINS , CONTROL , OPTICAL PROPERTIES , DEBRIS , PERFORMANCE TESTS , THIN FILMS , PROPENES , SPACE SHUTTLES , SOLAR ULTRAVIOLET RADIATION , METEOROIDS , PLASTICS , ATOMIC PROPERTIES , ENVIRONMENTAL PROTECTION , CONTAMINATION , SURFACE CHEMISTRY , FLIGHT , OXYGEN , COMPOSITE MATERIALS , EARTH ORBITS , IMPACT , THICKNESS , MECHANICAL PROPERTIES


Subject Categories : Plastics
      Logistics, Military Facilities and Supplies
      Thermodynamics
      Manned Spacecraft


Distribution Statement : APPROVED FOR PUBLIC RELEASE