NASA Technical Reports Server (NTRS) 19980218118: Fiber Optic Cable... | |
by NASA Technical Reports Server (NTRS) | |
Thumbnail | |
Download | |
Web page | |
A novel fiberoptic hermetic bulkhead feedthrough has been | |
developed which will offer cryogenic sealing at leak | |
rates of 10(exp -11) cc/sec helium. This feedthrough was | |
developed for NASA in response to needs for a | |
hermetically sealed feedthrough which could withstand a | |
range of temperatures from low cryogenic (-196 C), due to | |
liquid fuels and oxidizers, to high temperatures (+200 C) | |
encountered in the proximity of combustion gasses. The | |
development effort will be reported from conceptual | |
design of single and multi-channel feedthrough units with | |
single interconnection interfaces to units with double- | |
ended interconnection interfaces. Various combinations of | |
fiber/buffers are reported with recommendations based on | |
test results. A comprehensive series of environmental and | |
mechanical tests were performed to evaluate the | |
feedthroughs in adverse conditions. Test results are | |
reported including insertion loss, salt spray, sinusoidal | |
vibration, random vibration, mechanical shock, thermal | |
shock and humidity. A second set of feedthrough units was | |
exposed to 3 different types of radiation. Optical | |
transmittance changes during the tests were monitored and | |
leak rate testing was done after each test. State-of-the- | |
art technology in optical fiber feedthroughs constructed | |
with polycrystalline ceramic is presented. | |
Date Published: 2016-10-15 06:04:18 | |
Identifier: NASA_NTRS_Archive_19980218118 | |
Item Size: 359420996 | |
Language: english | |
Media Type: texts | |
# Topics | |
NASA Technical Reports Server (NTRS);... | |
# Collections | |
NASA_NTRS_Archive | |
additional_collections | |
# Uploaded by | |
@chris85 | |
# Similar Items | |
View similar items | |
PHAROS | |