NDLI: Comparison of hyperthermal ground laboratory atomic oxygen erosion yields with those in low earth orbit

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Comparison of hyperthermal ground laboratory atomic oxygen erosion yields with those in low earth orbit

Content Provider	NASA Technical Reports Server (NTRS)
Author	Miller, Sharon K. deGroh, Kim K. Banks, Bruce A. Loftus, Ryan J. Dill, Grace C.
Copyright Year	2013
Description	The atomic oxygen erosion yields of 26 materials (all polymers except for pyrolytic graphite) were measured in two directed hyperthermal radio frequency (RF) plasma ashers operating at 30 or 35 kHz with air. The hyperthermal asher results were compared with thermal energy asher results and low Earth orbital (LEO) results from the Materials International Space Station Experiment 2 and 7 (MISSE 2 and 7) flight experiments. The hyperthermal testing was conducted to a significant portion of the atomic oxygen fluence similar polymers were exposed to during the MISSE 2 and 7 missions. Comparison of the hyperthermal asher prediction of LEO erosion yields with thermal energy asher erosion yields indicates that except for the fluorocarbon polymers of PTFE and FEP, the hyperthermal energy ashers are a much more reliable predictor of LEO erosion yield than thermal energy asher testing, by a factor of four.
File Size	202306
Page Count	16
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20140011471
Archival Resource Key	ark:/13960/t36161k23
Language	English
Publisher Date	2013-12-01
Access Restriction	Open
Subject Keyword	Flight Tests Polymers Durability Oxygen Atoms Earth Orbital Environments Ground Tests Kapton Trademark Polytetrafluoroethylene Fluence Life Durability Fluoropolymers Spaceborne Experiments Thermal Energy Radio Frequencies International Space Station Low Earth Orbits Comparison Polyimides Erosion 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

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