How far can jet or rocket engines be miniaturized? And not just

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>>34924127
So is this just on /k/ because you posted a picture of a gun?

>>34924566
That gun uses rockets as bullets

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>>34924566
Fucking Summer Fag REEEEEEEEEEEEEEEEE

>>34924127
>>34924127
>Ram and scramjets won't work at low altitudes
>too many electronics and fuel weight involved
>no purpose
It will never happen, and simply cannot be done

>>34924566
I can't wait for summer to be over.

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This is now a terrible weapons thread. I submit this for review by my peers.

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>>34924127
You were checking out the Dardick pistol from that other thread and Google threw this up there with it.

>>34924127
Aerospace engineer here, the theoretical limit to the smallest size of a rocket engine is incredibly small, and is really only limited by your selection of available materials. I've spoken with CubeSat engineers at NASA who've managed to develop a working prototype rocket engine, where the nozzle diameter is too small to be seen with the naked eye.

Rocket engines are comparatively simple when looking at them versus a jet engine. Jet engines have precisely machined parts that spin at thousands of RPM, and getting extremely small parts that will last long enough to be practical is a major challenge. Again, it will come down to material choice, and moreso with jets, manufacturing choice. As DMLS and other metal 3D printing tech progresses, it will be easier to make smaller parts that are equally as complex as their counterparts, but the issues with longevity will remain. There simply isn't enough mass to dissipate heat from the friction and combustion involved.

>>34925554
>>34925554
actually decent/10
just use a shit load of lube

>>34926030
I shouldn't have to spray a can of WD-40 on a firearn just to shoot purple drank.

>>34926030

And avoid hollow points. I have way better feeding off solid lead rounds.