섬유

mass loss of shuttle space suit orthofabric under simulated ionospheric atomic oxygen bombardment

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 269
in the last few years there has been increasing awareness that many polymeric materials used for thermal protection and insulation on spacecraft degrade significantly under prolonged bombardment by ionospheric atomic oxygen. the covering fabric of the multilayered shuttle space suit, termed 'orthofabric' by its designers, is composed of a loose weave of gore-tex fibers, nomex and kevlar-29, which are all polymeric materials. in this study, pieces of the orthofabric were exposed to a simulated atomic oxygen environment using a microwave-driven plasma 'barrel asher. ' mass measurments and microscope examinations were made before and after each test to determine the mass loss and visible physical changes of each test sample. kapton control samples and data from previous asher and flight tests were used to scale the results to reflect ionospheric conditions at about 220 km altitude. (edited author abstract) 6 refs
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