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World's first wooden satellite launched into space (www.dw.com)

submitted 3 weeks ago by [email protected] to c/[email protected]

20 comments fedilink hide all child comments

Summary

Japan launched the world’s first wooden satellite, LignoSat, to test if wood can function as a space-grade material. Developed by Kyoto University, the satellite is made of honoki wood, chosen after a 10-month ISS experiment proved its suitability for space.

Designed without screws or glue, LignoSat will orbit Earth for six months, enduring extreme temperature swings and measuring wood’s resistance to space radiation. Advocates highlight wood’s eco-friendly re-entry properties compared to metal.

Researchers envision wooden structures for future space habitats, potentially boosting the timber industry.

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[–] [email protected] 3 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

This is why I'm curious:

It will measure how wood endures the extreme environment of space, where temperatures fluctuate from -100 to 100 degrees Celsius (-148 to 212 degrees Fahrenheit) every 45 minutes as objects orbit through darkness and sunlight.

I've never heard of anyone freeze-drying an instrument. Space doesn't freeze things, that requires somewhere for the heat to go. That's an interesting idea though.

Maybe it won't expand and contract for the same reasons. After all, there isn't any moisture in space.

[–] [email protected] 5 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Cooling by radiation is slower than convection or conduction, but it still happens. The James Webb went from room temperature to deep cryogenic in a few months, and it's big. As for moisture, things cook off into a vacuum very easily. That's the foundational to the whole concept of freeze drying, actually.

Freeze dried wood is absolutely commercially available, if pricey. I have no idea if anyone has used it for musical purposes either. There's a lot of audiophile-ish magical thinking in that space so it's possible nobody has bothered.

Edit: Although, since this is a research project, maybe not freeze drying it first was the point.

[–] [email protected] 2 points 3 weeks ago

Pretty cool info. Thank you