Model rocket Rockets
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Published on August 21, 2012
Description
a small rocket made to fit a rocket engine, type A10-3T. The fit turned out a liiittle tight, but i have now added .5mm to the diameter in the model-.stl. I printed it with 1% infill, but that probably isn't necessary. Also no extra skins. 0,5mm layer thickness. Turned out almost perfect.
I can change the model quite easy, if people have ideas for minor alterations.
I can change the model quite easy, if people have ideas for minor alterations.
Instructions
The hole for the engine has a slot for those little metal spring thingies that holds the engine. the hole is deep enough for the entire engine, but i don't know exactly how i will put it to use... I'm not too much into the model rocket world, we are just doing model rockets as a fun start up for new students at our university. Also, this one is not made to split in the air. I have no idea what will happen when the engine blows :-)
The file Rocketparts.stl is a nose cone and a set of fins to put directly on a C-rocket engine. for me it fitted perfectly with just a few layers of scotch tape on one end. you can drill a little hole in the end of the engine (not the business end) to tie a string of some sort to attach the nose and whatever kind of "parachute" you can fit in there...
The file Rocketparts.stl is a nose cone and a set of fins to put directly on a C-rocket engine. for me it fitted perfectly with just a few layers of scotch tape on one end. you can drill a little hole in the end of the engine (not the business end) to tie a string of some sort to attach the nose and whatever kind of "parachute" you can fit in there...
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License
Model rocket Rockets by JanM is licensed under the Attribution - Share Alike - Creative Commons license.
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It'll shoot out the bottom. If you don't want an ejection charge, get a plugged motor. They have a "P" at the end of the designation.
I would definitely check on the stability as well. http://exploration.grc.nasa.go...
Solid infill for the last 20% or so of the nose might help the mass distribution.
Unless the whole thing explodes.. :-)
Thanks for the link, and heads up about stability. As I am looking at the rocket now, with engine in place, the center of gravity is definitely above the entire engine (not sure what the center of pressure will actually be). Okay, i did the "string test" on the nasa-page, and the bottom of the rocket ends up in front :-p
This will be interesting come launch day tomorrow. I'm not even sure the engine will be able to lift it, but we'll see.