/sci/ - Science & Math

>>15133780
Help making a turbopump pls.
I was building a hydrogen peroxide rocket engine and everything was going great - The gimbal is working beautifuly, the aerospike nozzle turned out better than I expected and I was on the verge of victory.
But then the time came to work on the turbopumps, and it seems that I've hit a wall. Spiral centrifugal pumps are a pain to model in the software I use, 3d printed PLA isnt strong enough to resist high RPM (specially when submerged in liquid) and since I'm working with 20mm pipes anything I design turns out so big it takes 7+ hours to print.
I thought of making a sort of inverted car engine where the axis would spin, moving pistons up and down and thus moving the liquid, but moving multiple o-rings up and down would require high torque, which PLA cant handle.
Help pls.

I was building a hydrogen peroxide rocket engine and everything was going great - The gimbal is working beautifuly and the aerospike nozzle turned out better than I expected.
But then the time came to work on the turbopumps, and it seems that I've hit a wall. Spiral centrifugal pumps are a pain to model in the software I use, 3d printed PLA isnt strong enough to resist high RPM (specially when submerged in liquid) and since I'm working with 20mm pipes anything I design turns out so big it takes 7+ hours to print.
I thought of making a sort of inverted car engine where the axis would spin, moving pistons up and down and thus moving the liquid, but moving multiple o-rings up and down would require high torque, which PLA cant handle.
Help pls.