An Exploratory Study Of A New Class Of Stepladder And Ladder Polymers Polyimidazopyrrolones
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An Exploratory Study Of A New Class Of Stepladder And Ladder Polymers Polyimidazopyrrolones
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Author : George Francis Pezdirtz
language : en
Publisher:
Release Date : 1965
An Exploratory Study Of A New Class Of Stepladder And Ladder Polymers Polyimidazopyrrolones written by George Francis Pezdirtz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Polyimidazopyrrolone categories.
Flight And Ground Test Evaluation Of Pyrrone Foams
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Author : Allen G. McLain
language : en
Publisher:
Release Date : 1972
Flight And Ground Test Evaluation Of Pyrrone Foams written by Allen G. McLain and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Ablative materials categories.
Two Pyrrone materials, pure Pyrrone foam with a density of 481 kg/cu m and hollow glass microsphere-Pyrrone composite with a density of 962 kg/cu m, were tested in the Langley 20-inch hypersonic arc heated tunnel at pressure levels from 0.06 to 0.27 atm and heating rates from 1.14 to 11.4 MW/sq m. The 481-kg/cu m Pyrrone foam was also flight tested as an experiment aboard a Pacemaker test vehicle. The results of the ground tests indicated that the thermal effectiveness of the 481-kg/cu m Pyrrone foam was superior to the 962-kg/cu m glass sphere-Pyrrone composite. The 481-kg/cu m Pyrrone foam had approximately one-half the thermal effectiveness of low density phenolic nylon. The 481-kg/cu m Pyrrone foam experienced random mechanical char removal over the entire range of test conditions. Char thermal property inputs for an ablation computer program were developed from the ground test data of the 481-kg/cu m Pyrrone foam. The computer program using these developed char thermal properties, as well as the measured uncharred material properties, adequately predicted the in-depth temperature histories measured during the Pacemaker flight.
Nasa Technical Note
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Author :
language : en
Publisher:
Release Date : 1972
Nasa Technical Note written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.
Government Wide Index To Federal Research Development Reports
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Author :
language : en
Publisher:
Release Date : 1966
Government Wide Index To Federal Research Development Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Government publications categories.
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1966
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Government publications categories.
Products List Circular Opportunities For Small Businesses
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Author : United States. Small Business Administration
language : en
Publisher:
Release Date : 1966
Products List Circular Opportunities For Small Businesses written by United States. Small Business Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.
Products List Circular
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Author :
language : en
Publisher:
Release Date : 1966
Products List Circular written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.
Nasa Technical Memorandum
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Author :
language : en
Publisher:
Release Date : 1970
Nasa Technical Memorandum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Aeronautics categories.
A Selected Listing Of Nasa Scientific And Technical Reports For
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Author : United States. National Aeronautics and Space Administration. Scientific and Technical Information Division
language : en
Publisher:
Release Date : 1966
A Selected Listing Of Nasa Scientific And Technical Reports For written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Aeronautics categories.
Nasa Scientific And Technical Reports
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Author : United States. National Aeronautics and Space Administration Scientific and Technical Information Division
language : en
Publisher:
Release Date : 1967
Nasa Scientific And Technical Reports written by United States. National Aeronautics and Space Administration Scientific and Technical Information Division and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Aeronautics categories.