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Thermal performance of multilayer insulations. [gas evacuation characteristics of three selected multilayer insulation composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Glassford, A. P. Cunnington, G. R. Keller, C. W. |
| Copyright Year | 1974 |
| Description | Experimental and analytical studies were conducted in order to extend previous knowledge of the thermal performance and gas evacuation characteristics of three selected multilayer insulation (MLI) composites. Flat plate calorimeter heat flux measurements were obtained for 20- and 80- shield specimens using three representative layer densities over boundary temperatures ranging from 39 K (70 R) to 389 K (700 R). Laboratory gas evacuation tests were performed on representative specimens of each MLI composite after initially purging them with helium, nitrogen, or argon gases. In these tests, the specimens were maintained at temperatures between 128 K (230 R) and 300 K (540 R). Based on the results of the laboratory-scale tests, a composite MLI system consisting of 112 unperforated, double-aluminized Mylar reflective shields and 113 water preconditioned silk net spacer pairs was fabricated and installed on a 1.22-m-(4-ft-) diameter calorimeter tank. |
| File Size | 22072590 |
| Page Count | 446 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740014451 |
| Archival Resource Key | ark:/13960/t2c872j62 |
| Language | English |
| Publisher Date | 1974-04-05 |
| Access Restriction | Open |
| Subject Keyword | Thermodynamics And Combustion Composite Materials Gas Evolution Materials Tests High Temperature Tests Mylar Trademark Thermodynamic Properties Test Equipment Multilayer Insulation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
