Model rocketry enthusiast forum & rocket for sale classifieds. Rocketry forums for experts & beginners. Engines, recovery, electronics, rocketry software.
Question Hi everyone! We’re a university team just getting started with building model rockets, and one of our main goals is to develop an active control system. We’re currently debating between using movable fins (canards) or thrust vector control (TVC)...
I have a tall/thin rocket with a fineness (aka aspect ratio or length to diameter ratio) of ~26 (80” long 3.1” diameter). As currently configured, it has a stability margin of 3.7/14.6% in OpenRocket. I am trying to answer the age-old question is if this rocket is over-stable. The only “rule of...
Hello Rocketry Enthusiasts! I hope this post finds you all soaring high in your rocketry adventures! I'm a high school student currently navigating through the fascinating world of water rocketry for my research paper. My focus is on the optimization of water rocket fins in terms of their size...
Hey, I'm the guy behind Silicdyne, a company dedicated to providing the best in advanced rocketry electronics at low cost. You may have heard of my first product, the Fluctus flight computer. It's a project that's still ongoing development and on the market, but in parallel I'm also developing...
When the rocket is completed, everything is installed, except the motor, then weight it, and determine the CG. Use those to override mass and CG in OR. Once you do that, you should get much better sims from OR. Have you considered what motors you want to fly after you have gotten the L1 cert? Or is this rocket going to be a one flight and done?
These either requiere the rocket to have a certainly speed to work or a heavy supporting structure to enable the deployments. If the objective is to minimize weight and for the deployment to occur as far and as close at apogee as possible, wouldn't this Rocket Extraction method be very practical? I would love to know your opinion. Thank you!
Hot glue is unsuitable for nearly any rocket-building task because 1) it's not strong 2) it's not heat-resistant 3) it's messy Hot glue is good for sticking nearly anything together for craft projects that won't be subject to high speeds, temperatures, or forces.
Hello everyone, I am currently in the process of building a HPR hybrid rocket motor and am posting to get opinions, advice, and help. The motor has a theoretical average thrust of 800N 2. Propellant is paraffin wax with carbon black additive. 3. Oxidizer is N2O I have already...
To me, but "largest model rocket you can buy " implies a kit. That means the link Justin provided may well be the current largest. I've helped build a 52 foot tall rocket. I've helped build rockets upwards of 20 feet tall and 200+ pounds. None of those are something you can go out and buy - all scratch builds. And yes, we flew them all.
