Fiber optic temperature sensor insert for high temperature environments
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United States of America Patent
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Nov 21, 2017
Grant Date -
N/A
app pub date -
Nov 30, 2013
filing date -
Nov 30, 2013
priority date (Note) -
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Abstract
A thermal protection system (TPS) test plug has optical fibers with FBGs embedded in the optical fiber arranged in a helix, an axial fiber, and a combination of the two. Optionally, one of the optical fibers is a sapphire FBG for measurement of the highest temperatures in the TPS plug. The test plug may include an ablating surface and a non-ablating surface, with an engagement surface with threads formed, the threads having a groove for placement of the optical fiber. The test plug may also include an optical connector positioned at the non-ablating surface for protection of the optical fiber during insertion and removal.
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