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Rotating detonation rocket engine (RDRE)


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I have an idea for the new engine in KSP2, that can be added as sort of near future technologies and be in the same position in relation to the other engines as the spike engine from KSP
Here are articles about this
https://www.nasa.gov/centers/marshall/feature/nasa-validates-revolutionary-propulsion-design-for-deep-space-missions
https://newatlas.com/space/rotating-detonation-engine-ucf-hydrogen-oxygen/
https://www.intechopen.com/chapters/70511
It differs from another engines by less fuel consumption and more isp, but there is balance problem. It can be more expensive, but I'm not sure that in Progression mode will be money. In other way it weigh more and has lower thrust beacuse of its combustion chamber, detalied in last article conclusion. If spike engine had prototypes and was added in KSP1 (in 1 variation, let's add more of them), why not to add RDRE, becuse it also has many very promising prototypes and one of them from JAXA flew in space. Maybe it will be routine engine in near future, but won't be in KSP2. In this case I hope it will be added in KSP3, if it won't be added in KSP2 ;)

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