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Full-Text Articles in Physics
Micrometeoroid From Misse Examined To Understand The Effects Of The Space Environment On Space Suit, Kelby T. Peterson, Jr Dennison
Micrometeoroid From Misse Examined To Understand The Effects Of The Space Environment On Space Suit, Kelby T. Peterson, Jr Dennison
NCUR
Samples that were part of the Materials International Space Station Experiment (MISSE) experienced varying effects whilst exposed to the space environment; perhaps the most intriguing effect was the crater created by a micrometeoroid impact into a thin film of Vapor Deposited Aluminum (VDA) coated Mylar. Approximately 180 samples of various materials used in space-component design were flown on MISSE-6 and spent 18 months suspended off the side of the International Space Station. The Utah State University SUSpECS project was a unique student experiment that allowed for pre- and post-flight analysis of these material samples which were returned in pristine condition …
Simulation Chamber For Space Environment Survivability Testing, Lisa D. Montierth, Robert H. Johnson
Simulation Chamber For Space Environment Survivability Testing, Lisa D. Montierth, Robert H. Johnson
NCUR
A vacuum chamber was designed and built that simulates the space environment making possible the testing of material modification due to exposure of solar radiation. Critical environmental components required include an ultra high vacuum (10-9 Torr), a UV/VIS/NIR solar spectrum source, an electron gun and charge plasma, temperature extremes, and long exposure duration. To simulate the solar spectrum, a solar simulator was attached to the chamber with a range of 200nm to 2000nm. The exposure time can be accelerated by scaling the solar intensity up to four suns. A Krypton lamp imitates the 120 nm ultraviolet hydrogen Lymann alpha emission …
The Dynamic Interplay Between Spacecraft Charging, Space Environment Interactions And Evolving Materials, John R. Dennison
The Dynamic Interplay Between Spacecraft Charging, Space Environment Interactions And Evolving Materials, John R. Dennison
All Physics Faculty Publications
The charge on spacecraft is constantly changing, as a result of the dynamic nature of the space environment, the spacecraft orbit, the interactions between environment and spacecraft, and even the spacecraft materials. While the effects on spacecraft charging from varying environmental conditions and from the selection of different construction materials have been studied extensively, the modification of material properties by the space plasma environment can also have profound effects on spacecraft charging. These same considerations apply to other extreme plasma applications. This presentation focuses on the measurement methods and modeling we use to study electron emission and transport processes, charging, …