NASA/TM-209266, Vaughn, J.A. and Kamenetsky, R.R. and Finckenor, M.M., Modified Truncated Cone Target Hyperthermal Atomic Oxygen Test Results , Materials and Processes Laboratory, Science and Engineering Directorate, NASA Marshall Space Flight Center, AL 35812, May 1999, pp. 16, Format(s): PDF 1878k |
The modifed truncated cone target is a docking target planned for use on the International Space Station. The current design consists of aluminum treated with a black dye anodize, then crosshairs are laser etched for a silvery color. Samples of the treated aluminum were exposed to laboratory simulation of atomic oxygen and ultraviolet radiation to determine if significant degradation might occur. Durability was evaluated based on the contrast ratio between the black and silvery white areas of the target. Degradation of optical properties appeared to level off after an initial period of exposure to atomic oxygen. The sample that was not alodined according to MIL-C-5541, type 1A, performed better than alodined samples
| Keywords: | environmental effects, atomic oxygen, docking, spacecraft |
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| Subjects: | Chemistry and Materials: Space Processing |
| ID Code: | 490 |
| Deposited On: | 24 July 2002 |