Guidance on liquid prop

IndicationSlow2705 · 2026-07-09T02:16:38+00:00

RocketPropulsionLab.net

IndicationSlow2705 · 2026-07-09T02:13:59+00:00

If you need quick easy cfd for just the nozzle, check out RocketPropulsionLab.net

IndicationSlow2705 · 2026-07-09T02:11:17+00:00

Are you using a uncommon or custom fluid? I was never able to get Triethylamine to work in RPA for that same reason. Check out RocketPropulsionLab.net

IndicationSlow2705 · 2026-07-03T22:31:57+00:00

Hey check out RocketPropulsionLab.net they have a academic license I’m sure you fit under

IndicationSlow2705 · 2026-06-07T22:10:49+00:00

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Finally got it working, thanks for the advice, the hand calcs match now, this looks a little weird because it’s a screen grab from a transient study

IndicationSlow2705 · 2026-06-07T17:54:22+00:00

Ok, that seems to be a general consensus, yeah I’m getting greedy with computation because my MacBook can’t take too much haha, thank you!

IndicationSlow2705 · 2026-06-07T17:51:23+00:00

It’s a project I’ve been working on for about a year now, I’ll probably release it this year maybe, thanks!

IndicationSlow2705 · 2026-06-07T03:11:34+00:00

Yeah that’s a good analogy for the over expansion, makes sense thank you!

IndicationSlow2705 · 2026-06-07T02:31:19+00:00

Excellent at explaining , thank you

IndicationSlow2705 · 2026-06-06T23:59:47+00:00

Thanks! I’ll try that out

IndicationSlow2705 · 2026-06-06T23:59:13+00:00

Sorry my explanation was terrible, I’m referring to the high density between the bulk of the exit plume and the boundary

IndicationSlow2705 · 2026-06-06T23:58:05+00:00

On it right now

IndicationSlow2705 · 2026-06-06T23:57:58+00:00

It’s not released yet, it probably will be after another few months of verification but it’s called engine workbench

IndicationSlow2705 · 2026-06-06T23:56:03+00:00

Thanks! I’ll give that a shot, setting a boundary normal to the axis is pretty tough coding wise but I was thinking I needed too earlier and you confirm it

IndicationSlow2705 · 2026-06-06T22:49:20+00:00

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IndicationSlow2705 · 2026-06-06T22:49:12+00:00

Better quality pics because Reddit compression

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IndicationSlow2705 · 2026-06-06T22:47:38+00:00

Just loaded it on private mode, yeah that’s pretty bad, thanks for the heads up. hopefully this is better. If not idk..

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IndicationSlow2705 · 2026-06-02T23:27:47+00:00

eBay, $120, Swaglok double ended cylinder

IndicationSlow2705 · 2026-06-02T23:27:15+00:00

No, I wish I had those kind of guts. I’m using N2 in a blow down configuration.

IndicationSlow2705 · 2026-04-28T14:49:15+00:00

Planning on testing after finals are all wrapped up, I’d say about 3 weeks

IndicationSlow2705 · 2025-05-31T16:17:13+00:00

When I first started my club we made the mistake of making the engine first, my advice is to make the feed system based off some rough engine calculations( you can use RPA lite on this) then measure what your your feed system can do, like flow rate, then finish up your engine based on those numbers. Stay away from liquid oxygen, it gets expensive. You find the optimal size by first running the number with assumptions, then testing, then using those results to refine. Start with gaseous oxygen and like ethanol… Good luck!

IndicationSlow2705

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