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- Apr 20, 2020
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I swear I saw this concept here, but now I can't find it. Anyway, something truly half-baked. This is a booster for a hypothetical 2-stage, where the booster spins the stack up to ridiculous rotational speed, then separates the finless sustainer. I don't really know if it will work, but it will be fun to try. 24mm MMT, 4" diameter ring, transitioning to 18mm powered sustainer. This is upside-down because it will 3D print better that way. I'll start up a build thread before too long, though I have no idea whatsoever when I'll be able to launch it.
View attachment 434988
You could maybe grab an off the shelf cpu fan or use a ducted fan R/C plane motor for this and cut the blades down to fit in a tube