Investigation Of Teflon Fep Embrittlement On Spacecraft In Low Earth Orbit

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Investigation of Teflon Fep Embrittlement on Spacecraft in Low Earth Orbit

Author : National Aeronautics and Space Adm Nasa
Publisher :
ISBN 13 : 9781729039564
Total Pages : 26 pages
Book Rating : 4.0/5 (395 download)

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Book Synopsis Investigation of Teflon Fep Embrittlement on Spacecraft in Low Earth Orbit by : National Aeronautics and Space Adm Nasa

Download or read book Investigation of Teflon Fep Embrittlement on Spacecraft in Low Earth Orbit written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-10-22 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Teflon(registered trademark) FEP (fluorinated ethylene-propylene) is commonly used on exterior spacecraft surfaces in the low Earth orbit (LEO) environment for thermal control. Silverized or aluminized FEP is used for the outer layer of thermal control blankets because of its low solar absorptance and high thermal emittance. FEP is also preferred over other spacecraft polymers because of its relatively high resistance to atomic oxygen erosion. Because of its low atomic oxygen erosion yield, FEP has not been protected in the space environment. Recent, long term space exposures such as on the Long Duration Exposure Facility (LDEF, 5.8 years in space), and the Hubble Space Telescope (HST, after 3.6 years in space) have provided evidence of LEO environmental degradation of FEP. These exposures provide unique opportunities for studying environmental degradation because of the long durations and the different conditions (such as differences in altitude) of the exposures. Samples of FEP from LDEF and from HST (retrieved during its first servicing mission) have been evaluated for solar induced embrittlement and for synergistic effects of solar degradation and atomic oxygen. Micro-indenter results indicate that the surface hardness increased as the ratio of atomic oxygen fluence to solar fluence decreased for the LDEF samples. FEP multilayer insulation (MLI) retrieved from HST provided evidence of severe embrittlement on solar facing surfaces. Micro-indenter measurements indicated higher surface hardness values for these samples than LDEF samples, but the solar exposures were higher. Cracks induced during bend testing were significantly deeper for the HST samples with the highest solar exposure than for LDEF samples with similar atomic oxygen fluence to solar fluence ratios. If solar fluences are compared, the LDEF samples appear as damaged as HST samples, except that HST had deeper induced cracks. The results illustrate difficulties in comparing LEO exposed materials from d...

Investigation of Teflon FEP Embrittlement on Spacecraft in Low Earth Orbit

Author :
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (317 download)

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Download or read book Investigation of Teflon FEP Embrittlement on Spacecraft in Low Earth Orbit written by and published by . This book was released on 1997 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

INVESTIGATION OF TEFLON FEP EMBRITTLEMENT ON SPACECRAFT IN LOW EARTH ORBIT... NASA-TM-113153... APR. 7, 1998

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (213 download)

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Book Synopsis INVESTIGATION OF TEFLON FEP EMBRITTLEMENT ON SPACECRAFT IN LOW EARTH ORBIT... NASA-TM-113153... APR. 7, 1998 by :

Download or read book INVESTIGATION OF TEFLON FEP EMBRITTLEMENT ON SPACECRAFT IN LOW EARTH ORBIT... NASA-TM-113153... APR. 7, 1998 written by and published by . This book was released on 1999* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mechanical Properties Degradation of Teflon(Trademark) FEP Returned from the Hubble Space Telescope

Author : Joyce A. Dever
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Mechanical Properties Degradation of Teflon(Trademark) FEP Returned from the Hubble Space Telescope by : Joyce A. Dever

Download or read book Mechanical Properties Degradation of Teflon(Trademark) FEP Returned from the Hubble Space Telescope written by Joyce A. Dever and published by . This book was released on 1998 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Protection of Space Materials from the Space Environment

Author : J. Kleiman
Publisher : Springer Science & Business Media
ISBN 13 : 9401007144
Total Pages : 354 pages
Book Rating : 4.4/5 (1 download)

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Book Synopsis Protection of Space Materials from the Space Environment by : J. Kleiman

Download or read book Protection of Space Materials from the Space Environment written by J. Kleiman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents the proceedings of ICPMSE-4, the fourth international conference on Protection of Materials and Structures from the Low Earth Orbit Space Environment, held in Toronto April 23-24, 1998. The conference was hosted and organized by Integrity Testing Laboratory Inc. (ITL), and held at the University ofToronto's Institute for Aerospace Studies (UTIAS). Twenty two industrial companies, six universities and fourteen government agencies from Canada, USA, United Kingdom, France, Israel, Russia, Ukraine and the Netherlands were represented by over 75 participants indicating increasing international co-operation in this critical arena of protection of materials in space. Twenty-seven speakers, world experts in their fields, delivered talks on a wide variety of topics on various aspects of material protection in space. Representatives from the Canadian, American, European and Israeli space agencies as well as from leading space research laboratories ofmajor aerospace industries gathered at UTIAS to discuss the latest developments in the field of material and structure protection from the harsh space environment.

Research & Technology 1997

Author :
Publisher : DIANE Publishing
ISBN 13 : 1428918256
Total Pages : 190 pages
Book Rating : 4.4/5 (289 download)

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Download or read book Research & Technology 1997 written by and published by DIANE Publishing. This book was released on 1998 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research & Technology 2002

Author :
Publisher : DIANE Publishing
ISBN 13 : 1428918205
Total Pages : 274 pages
Book Rating : 4.4/5 (289 download)

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Download or read book Research & Technology 2002 written by and published by DIANE Publishing. This book was released on with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research & Technology 2001

Author :
Publisher : DIANE Publishing
ISBN 13 : 1428918213
Total Pages : 251 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Research & Technology 2001 by :

Download or read book Research & Technology 2001 written by and published by DIANE Publishing. This book was released on with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt:

A Comparison of Space and Ground Based Facility Environmental Effects for FEP Teflon

Author :
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis A Comparison of Space and Ground Based Facility Environmental Effects for FEP Teflon by :

Download or read book A Comparison of Space and Ground Based Facility Environmental Effects for FEP Teflon written by and published by . This book was released on 1998 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ground Laboratory Soft X-Ray Durability Evaluation of Aluminized Teflon FEP Thermal Control Insulation

Author :
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Ground Laboratory Soft X-Ray Durability Evaluation of Aluminized Teflon FEP Thermal Control Insulation by :

Download or read book Ground Laboratory Soft X-Ray Durability Evaluation of Aluminized Teflon FEP Thermal Control Insulation written by and published by . This book was released on 1998 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research & Technology 2000

Author :
Publisher : DIANE Publishing
ISBN 13 : 1428918221
Total Pages : 211 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Research & Technology 2000 by :

Download or read book Research & Technology 2000 written by and published by DIANE Publishing. This book was released on with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research & Technology 1998

Author :
Publisher : DIANE Publishing
ISBN 13 : 1428918248
Total Pages : 203 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Research & Technology 1998 by :

Download or read book Research & Technology 1998 written by and published by DIANE Publishing. This book was released on with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research & Technology 1999

Author :
Publisher : DIANE Publishing
ISBN 13 : 142891823X
Total Pages : 195 pages
Book Rating : 4.4/5 (289 download)

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Book Synopsis Research & Technology 1999 by :

Download or read book Research & Technology 1999 written by and published by DIANE Publishing. This book was released on with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research and Technology 1997

Author :
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Research and Technology 1997 by :

Download or read book Research and Technology 1997 written by and published by . This book was released on 1998 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Effects of Simulated Low Earth Orbit Environments on Spacecraft Thermal Control Coatings

Author : Joyce A. Dever
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis The Effects of Simulated Low Earth Orbit Environments on Spacecraft Thermal Control Coatings by : Joyce A. Dever

Download or read book The Effects of Simulated Low Earth Orbit Environments on Spacecraft Thermal Control Coatings written by Joyce A. Dever and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Protection of Materials and Structures from Space Environment

Author : Jacob I. Kleiman
Publisher : AIP Conference Proceedings / M
ISBN 13 :
Total Pages : 730 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Protection of Materials and Structures from Space Environment by : Jacob I. Kleiman

Download or read book Protection of Materials and Structures from Space Environment written by Jacob I. Kleiman and published by AIP Conference Proceedings / M. This book was released on 2009-01-15 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: The conference proceedings are discussing the latest developments in the area of the effects of the space environment on materials and structures and the ways to prevent and/or reduce them. The effects of various space environment factors like atomic oxygen, vacuum ultraviolet radiation, charging, micrometeoroids, meteoroid showers, etc. on materials and structures in various space conditions are discussed. In addition the ways to prevent these effects or reduce them through protection by coatings or modification of affected surfaces are considered in the book. The discussions on development of predictive models of material erosion that will allow the materials engineers and designers of future spacecraft to evaluate materials' behavior is continued from the past meetings.

Protection of Materials and Structures From the Space Environment

Author : Jacob Kleiman
Publisher : Springer Science & Business Media
ISBN 13 : 3642302289
Total Pages : 606 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Protection of Materials and Structures From the Space Environment by : Jacob Kleiman

Download or read book Protection of Materials and Structures From the Space Environment written by Jacob Kleiman and published by Springer Science & Business Media. This book was released on 2012-09-22 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goals of the 10th International Space Conference on “Protection of Materials and Structures from Space Environment” ICPMSE-10J, since its inception in 1992, have been to facilitate exchanges between members of the various engineering and science disciplines involved in the development of space materials, including aspects of LEO, GEO and Deep Space environments, ground-based qualification, and in-flight experiments and lessons learned from operational vehicles that are closely interrelated to disciplines of the atmospheric sciences, solar-terrestrial interactions and space life sciences. The knowledge of environmental conditions on and around the Moon, Mars, Venus and the low Earth orbit as well as other possible candidates for landing such as asteroids have become an important issue, and protecting both hardware and human life from the effects of space environments has taken on a new meaning in light of the increased interest in space travel and colonization of other planets. And while many material experiments have been carried out on the ground and in open space in the last 50 years (LDEF, MEEP, SARE, MISSE, AOP, DSPSE, ESEM, EURECA, HST, MDIM, MIS, MPID, MPAC and SEED), many questions regarding the environmental impact of space on materials remain either poorly understood or unanswered. The coming generations of scientists will have to continue this work and tackle new challenges, continuing to build the level of confidence humans will need to continue the colonization of space. It is hoped that the proceedings of the ICPMSE-10J presented in this book will constitute a small contribution to doing so.