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Author
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Topic: FS: Infrared window from Columbia's SILTS pod
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JoKepler
Member Posts: 515
From: Houston, Texas
Registered: Jul 2001
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posted 02-23-2017 04:57 PM
   
For Sale: I have what appears to be an infrared-transparent window from the SILTS experiment pod from Columbia. I'm not a hardware expert or collector (I collect autographs/books) so I am a bit clueless on how to price it. Will gladly listen to offers. Thanks to Oscar (from Katy, Texas) for providing the below information about it when I inquired on the Flown Hardware section here on collectSPACE. Each of the two infrared-transparent window assemblies consists of dual silicone windows constrained within a carbon-phenolic window mount. The windows and window mount assemblies are designed to withstand the entry thermal environment to which they would be subjected without active cooling. They are, however, transpiration cooled with gaseous nitrogen during experiment operation so that they do not reach temperatures at which they would become significant radiators in the infrared. A small thermostatically controlled surface between the two window assemblies provides an in-flight temperature reference source for the infrared camera. You can read more about it here and here. These are bigger articles but they do have helpful parts here and here. The last photo is the one that convinced me. It appears to be used because of the brown nitrogen burns on the inside and it was discontinued because of the contamination also seen on the inside. The SILTS experiment was cooled with nitrogen. It was cheaper to switch them that to clean them. I can't say that it's flown because it doesn't have any tags or documentation. The sticker on the side says P/N (part number) but part of it is smudged. The other numbers should be optical calibration numbers but it's hard to tell. | |
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