Sources & Credits:
https://www.youtube.com/watch?v=QS91MFQcPxg (Relativity Space)
https://www.youtube.com/watch?v=-5KtQ8YvdXI (RDE)
https://www.nasa.gov/centers/marshall/news/background/facts/aerospike.html
https://www.nasa.gov/directorates/spacetech/strg/nstrf_2017/Aerospike_Nozzle/
https://scitechdaily.com/rotating-detonation-rocket-engine-nasas-revolutionary-propulsion-design-for-deep-space-missions/
https://www.eos.info/en/presscenter/press-releases/eos-and-hyperganic