Author: George F. SykesPublisher:
ISBN:
Category : Shielding (Heat)
Languages : en
Pages : 44
Book Description
Effects of Heat Sterilization and Vacuum Exposure on Some Low-density Heat-shield Materials
Author: George F. SykesPublisher:
ISBN:
Category : Shielding (Heat)
Languages : en
Pages : 44
Book Description
Effects of Heat Sterilization and Vacuum Exposure on Some Low-Density Heat-Shield Materials
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 35
Book Description
The effects of dry heat sterilization for 92 hours at 135 deg C in flowing nitrogen and 200 hours of exposure at 66 deg C to pressures in the 10( -5)-N/m(2) range upon the thermochemical properties of five blown-foamed and five molded composite heat-shield materials have been determined. Differential thermal analysis (DTA) was employed to follow the changes which occurred in each material as a result of sterilization and vacuum exposure. The results show that, on the whole, the composite materials have greater sterilization mass losses than the foamed materials and that the high-vacuum losses of both types of material are approximately equal. During high-vacuum exposure, the mass loss was approximately 1 percent after 200 hours of exposure, and at 200 hours the rate of mass loss ranged between 2.5 x 10 ( -4) and 11.1 x 10( -4) percent per hour for most of the materials.
NASA Technical Note
Author: Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1250
Book Description
Scientific and Technical Aerospace Reports
Author: Applied Mechanics Reviews
Author: Monthly Catalog of United States Government Publications
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1320
Book Description
Monthly Catalog of United States Government Publications, Cumulative Index
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : United States
Languages : en
Pages : 1348
Book Description
The Aeronautical Journal
Author: Aeronautical Engineering
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1156
Book Description
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).