2024-12-17

模倣子 acoustic levitation…to space?

 


Can we use this technique to launch payloads into space?

Possible to make a macroscopic version? Or impossible because the nodes have to be tiny? Or could have a “ladder” of nodes that could be climbed to altitude?

Could we launch 🚀 things into space with this idea? 

So, turns out according to my totally-not-exhaustive review of the peer-reviewed literature, that maglev (ie, trains), superconducting based levitation of metallic materials, and a couple other real world “levitation” examples all rely on standing waves and suspending susceptible materials under the nodes. You can use intersecting standing waves to make stable nodes (obviously, since maglevs trains use this fundamental at very high speeds and mass!). 

It does make sense, and I’ve seen suggested, that you might use mass drivers to deliver high mass material to Low Earth Orbit, and those operate (in theory) on principles related to supercontinents or maglev standing electromagnetic waves.

The rock star in *The Restaurant at the End of the Universe* by Douglas Adams is **Hotblack Desiato**. He is the lead singer of the band **Disaster Area**, which is famously known as the loudest rock band in the universe. Hotblack is "spending a year dead for tax reasons," a humorous nod to the absurdities of bureaucracy and wealth management in Adams' satirical universe.



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