[kach22i]

https://www.newscientist.com/article/mg23431264-500-plasma-jet-engines-that-could-take-you-from-the-ground-to-space/

Göksel is hoping for a breakthrough in compact fusion reactors to power his system. Other possible options could be solar panels or beaming power wirelessly to the engines, he says.

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Experimental XB-1 aircraft goes supersonic for the first time
Boom Supersonic’s XB-1 aircraft broke the sound barrier during three test runs, a step toward the possible return of supersonic commercial flights
By Jeremy Hsu
28 January 2025
https://www.newscientist.com/article/2465962-experimental-xb-1-aircraft-goes-supersonic-for-the-first-time/

The experimental XB-1 aircraft, made by US company Boom Supersonic, flew faster than the speed of sound on 28 January. The achievement is the first time any civil aircraft has gone supersonic over the continental US – and another step toward the possible return of supersonic commercial aviation.