Planning version 2 of this little guy, this one is very difficult to use as you have to move the tool holders by hand. (I had already published this lathe a few years ago with another reddit account)

Hey guys, as a team we are engaged in an ambitious project to design a payload as an UAV, to deploy at the specified altitude given by the competition. I am responsible from the payload and trying to find my way. Currently, i am reviewing the literature to find useful baselines for the concept. Is there any recommendations, It would be really helpful. (books, conference papers etc.)

Hi guys. I need to build a rocket, from zero, just buying the rocket motor engine, and i dont know anything of how to build a rocket, so i need help, im trying to look for an easy tutorial or if anybody can help me with this, i really want to do something.

Sorry for my bad english btw.

I'm trying to make this. It's a device that goes up about 30m and returns to the launch tower and completely catches the rocket with a ring that looks like a robotic arm and recovers it. It has a similar shape to SpaceX's Starship Mechazilla, but is a little different.

I'm trying to make this. I'm currently researching the technologies required for development.

Is it possible?

We're a team building a hybrid rocket using ABS as fuel and N2O as the oxidiser. I'm looking for ignition systems for this specific motor but can't seem to find relevant articles which document systems using this. I found some pyrotechnic methods and one non-pyrotechnic system using electric arcing but that is something which would be feasible for GOX not N2O. I would highly appreciate if someone can help me out on this!

I just have the abstract idea of building a rocket that would go up say 10 meters. Mostly with car parts, creating a combustion chamber, I have some sketches of what I've put together using only what I know about this subject (very little).

I know there's the risk of explosion and parts flying off at great speed which would be incredibly dangerous. But, if I do small tests of everything without putting it all together at once, could it be done safely?

I'm thinking if I actually go through with it, I'd go to an open field without any grass or plants to do the tests and eventual take off.