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A Review of Aerospike Nozzles: Current Trends in Aerospace Applications

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84 points PaulHoule | 1 comments | 26 Jun 25 15:33 UTC | HN request time: 0.212s | 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.

replies(3): >>44388747 #>>44391977 #>>44392031 #
1. ambicapter ◴[26 Jun 25 16:10 UTC] No.44388747[source]▶
Doesn't seem like a front rotating around the spike would gain that much "spreading out" over a continuous front. At the end of the day, its a spike that narrows to a very small point.