Loading...
Please wait, while we are loading the content...
Similar Documents
Evaluation of charge storage and decay in spacecraft insulators
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Frederickson, Arthur Bockman Sr., James Benson Sr., Charles |
| Copyright Year | 2003 |
| Description | Two reports discuss methods for evaluating the magnitude of electrostatic charging that occurs in spacecraft dielectric materials (in particular, polyimides) during prolonged exposure to radiation in outer space. The reports describe experiments on the electrical resistivities and charge-storage properties of polyimide specimens in a dark, evacuated environment, both before and after 5-megarad exposures to rays from cobalt-60. The experiments were designed to measure these properties not under standard conditions prescribed for testing dielectrics in air but, rather, under conditions approximating those in the intended spacecraft applications. The results of the experiments showed that the electrical resistivities of the insulations as determined under these conditions are greater, by a factor of roughly a thousand, than those determined under the standard conditions and that the gamma irradiation reduced resistivities marginally. |
| File Size | 26266 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110024090 |
| Archival Resource Key | ark:/13960/t3421xh6q |
| Language | English |
| Publisher Date | 2003-01-01 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Electrical Resistivity Polyimides Irradiation Exposure Dielectrics Cobalt 60 Electrostatics Radiation Dosage Technology Utilization Electrostatic Charge 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 |
