[ballenf]

Do you have a link or company/product name? Sounds fascinating.

[pfdietz]

https://coolbrook.com/wp-content/uploads/2023/06/REPRINT-202...

I mistated slightly: the gas is accelerated to supersonic speed then slowed in a diffuser, where shock waves heat it.

[kragen]

thank you, this is great! it sounds like they're only targeting 1700°, though, which is a temperature that exotic resistive heating elements can reach. it's too bad they didn't include any kind of diagram