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   gnutelephony (gnutelephony@floss.social)'s status on Tuesday, 16-Jan-2024 03:32:45 JST gnutelephony

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   • Yogthos

   @yogthos that's close to 2/3 orbital speed. And at 30km up, that's down to 1% atmospheric pressure. A lovely place to launch into space. An air breathing engine on a re-usable booster that flies and can land like a plane it could be great for launching a rocket powered glider with a payload the rest of the way to orbit.

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     Yogthos (yogthos@mas.to)'s status on Tuesday, 16-Jan-2024 03:32:46 JST Yogthos

     Chinese scientists have invented the most powerful detonation engine for hypersonic flight, which could lift an aircraft from a runway to more than 30km into the stratosphere and continuously accelerate it to 16 times the speed of sound.

     This engine design integrates rotational and straight-line detonation across a wide speed range, which is claimed to be a world first and a revolutionary change in aerospace propulsion.

     https://www.nextbigfuture.com/2023/12/china-makes-most-powerful-detonation-engine-for-hypersonic-flight.html