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A Review of Aerospike Nozzles: Current Trends in Aerospace Applications

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84 points PaulHoule | 3 comments | 26 Jun 25 15:33 UTC | HN request time: 0s | source
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hinkley ◴[26 Jun 25 15:57 UTC] No.44388640[source]▶
I have some hope that rotating detonation engines will make aerospikes viable. But I don’t even see them mentioned in this paper.

The idea with the constantly moving flame front is that it spreads the heat out. The limitation with aerospikes is getting enough coolant through the spike. Bells are simpler to cool, which as I understand more than makes up for them needing more cooling.

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1. JumpCrisscross ◴[26 Jun 25 22:10 UTC] No.44391977[source]▶
RDEs are far less tested than aerospikes. (In part because you can build a dipshit aerospike in your garage. I don’t know anyone who has made an RDE at home.)
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2. hinkley ◴[27 Jun 25 13:10 UTC] No.44396537[source]▶
I know one idiot on YouTube who has made an RDE at home. He was smart enough to leave the room while it fired.

Tomatoes are disgusting.

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3. ben_w ◴[27 Jun 25 15:38 UTC] No.44397646[source]▶
I know Integza tried, but did he ever confirm his engine was doing a rotating detonation?

He said near the end of the video 2 years ago, "I'm not sure if I got a rotating detonation wave": https://www.youtube.com/watch?v=fRMMSyCcTDI