Hello guys! Lately, I’ve gotten intrested in rockets. I recently joined a rocketry club at my university and picked avionics subteam..I'm a first year and I'm studing a Electrical and Electronics Engineering, so i tought this one would be great heads-on experience and a good way to get a head start on 3rd-year embedded systems. What advice or tips would you give to your past yourself when starting out in avionics? Thanks in advance!

You can submit your questions now: https://www.reddit.com/u/UCBerkeley/s/we4fFYuTje

Im a student rocket hobbyist and ive made a couple of rocket engines of class J, K. phenolic is pretty hard to get where I live , so I’m wondering what alternatives actually exist. I’ve used PVC/uPVC mentioned for motor liners, but what about the phenolic between a graphite nozzle and its aluminum holder? Has anyone seen student teams use something else for either?

Hi everyone,

I’m 13 years old and currently working on my first model rocket project called Buzzard-01. I watched a bunch of BPS.space videos and thought it's not gonna be that hard... well, turns out it's a lot of work, but amazing to learn!

I designed a custom flight computer in KiCad specifically for this rocket. It features a Raspberry Pi Pico as the brain, space for up to 3 sensors (IMU, barometer) to log flight data, a battery connection, and an ON/OFF switch. I just finished tweaking the files for release 1.3. The next step will be writing the flight software in MicroPython to read the sensors during launch.

Since I want to share my journey, the whole project is completely open-source. You can check out the OpenRocket simulations, 3D models, and KiCad files here: https://github.com/MaxFoerster-Dev/Buzzard-01

I would love to hear your thoughts, tips for the upcoming flight software, or general advice for a beginner building custom avionics!

Hi everyone! We’re using an Altus Metrum TeleMega and a Featherweight Swift on a high-power rocket targeting 30,000 ft, with a launch planned in Midland, Texas.

I’m looking for antenna recommendations for both systems. They both came with wire whip antennas, but some of my research has pointed toward SMA antennas as a possible alternative. Would those be suitable for this application, or would you recommend sticking with the supplied whips?

If anyone has flown or tested these systems at similar altitudes, I’d appreciate hearing about your setup and results. My RF knowledge is still limited, so I’m learning as I go. Thanks!

Hey guys!

If you're in the Houston/Texas area I would totally suggest checking out this event, there are a lot of panels specifically on rocketry. Even if you can only come for one day check out the panels on SpaceVision.seds.org ahead of time to see what piques your interest!

This hexagonal structure at the end of many single-use model rocket motors:

I never posted here, so I've no idea if this post is appropriate.

I have an assignment to study this little motor, of model "G80T", but they're not even for sale in my country, and there seems to be little to no specifics about it online.

The main things I want to know:

1. What it that painted hexagonal-nut-looking thing on the forward end of the motor;
2. What is the diameter of the thrust ring / lip.

If anyone has one of these motors, or knows about it enough to help me, I'd greatly appreciate it.

Again, I'm not sure if this is the right place to ask for this info, and if it's not, I'd love to know where I should ask instead.

Thanks in advance!

Long story short, a friend’s kid went to a competition but the rockets the team used got problems in a large scale, and the said friend is looking for alternative suppliers.

We are Chinese and he always has been looking for suppliers domestically, this time we are trying to expand the search and see if we can find some reliable ones outside the border. Anyone knows anything about it? I found xkmodels, some “aero master”, Apogee, but the lack of information is a major block.

We are looking for carbon fiber rockets for S6A competition, 40mm wide/500mm-505mm long, weight lower than 4g.

My 3" filament wound fiberglass nosecone from Wildman didn't survive ground testing. Yes, the ejection charge was a little spicy, but the failure mode looks like there are very few fibers contributing to axial strength. That and the wall was very thin. I was curious if others have experienced this. Between this issue and the long lead times, it looks like I'll be making my own nosecones moving forward.

Used a Runcam 6 with a 3d printed mount I epoxied to the outside.

I wanted to recreate the Apollo 11 Saturn V in a way that shows not just its iconic exterior, but also the engineering behind it.

This is my 1:185 scale, 60cm Saturn V cutaway, featuring all 11 main stage engines, propellant tanks, feedlines, and exposed structural details.

You can check out more details about its internal details, print files and full breakdown HERE

Designed entirely in Fusion 360 and printed on my Bambu Lab A1 in 23 pieces, without generated supports!

Some details were simplified or reinforced for FDM printing while keeping the engineering as historically accurate as practical.

It's a static display model, not a flyable rocket.

Really happy with how it turned out! Thought you guys might appreciate the engineering side of it

hello! i’m buying supplies to build the Estes Banshee rocket. on the website, it tells you to use plastic glue. when you look at the manual, it uses plastic glue to attach a nozzle (made of plastic) to the body tube (made of paper). i assume most plastic cement brands are for plastic on plastic only. so what exactly do i do here and what do i buy? i’m a bit new to all of this, so it’s a bit confusing.

thanks!

Hey everyone, need some advice on a threaded closure for our liquid rocket propellant tank.

Tank specs:

• Material: Aluminium 6082-T6
• OD/ID: 154 mm / 140 mm
• Operating pressure: 1200 psi (8.27 MPa)
• Thread: M145 × 1.5
• Engagement length: 30 mm
• Closure material: Aluminium 6082-T6
• Repeated pressurization

As shown in the attached cross-section, the female thread is machined directly into the tank end, with no thickened boss.

My question: How can I verify whether the threads and tank end can safely withstand the pressure without stripping, yielding, or failing under repeated cycles? What calculations, standards, or FEA methods should I use?

Any technical guidance or relevant references would be appreciated!

Made from scratch with a 3” cardboard body, PETG for 3D printing the nosecone and fin can. Will fly this weekend on an AeroTech H100 motor.

Designed in OpenRocket, CAD/modeled in OnShape, 3D printed on a Bambu Labs A1 Mini.

Simulation shows 1730 ft [527.3 m] apogee and max velocity of 383 ft/s [116.7 m/s]. Feel free to ask any questions below!

During October skies i got the chance to fly my first onboard camera and shockingly it actually survived. Any ideas on what to do with this rocket next?

CTI I-212, 3664ft

I'm trying to get the burn rate coefficient and pressure exponent of my KNSB propellant. I don't want to destroy my expensive pressure transducer.

Hey there--my son's birthday is coming up and I was hoping that one of the activities for his party could be decorating model rockets that would ultimately be functional. Looks like Estes has some bulk packs, but the rockets still have some designs on them and I'd be looking for examples that are more "blank."

Has anyone had any success here / know of any places we might be able to look? Thanks in advance.

So I am in desperate need of an M motor. Does anyone know what seller might have one??? I'm looking for a mid-to-high impulse one for my teams rocket. I genuinely have not been able to find much for the past month or 2. Does anyone have any advice as to what I should do? Im willing to buy if someone has stock!!! Also, is it worth pre-ordering now, it seems like lead times take so long as well

Edit: Looking for a 98mm/ pro98 reload in california (3g or 4g cti)

currently have a 98/10240 casing