/r/rocketry
Everything from the Saturn V to ion thrusters to model rockets with your family.
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/r/rocketry
The LOC-IV is one of the ADVANCED SERIES of kits, which include factory pre-slotted airframe and through-the-wall fin construction, Now including payload section! The LOC IV has been the best selling kit in our history (perhaps all of high power history as well) Recently upgraded to 38mm motor mount and to-the-motor mount construction, this kit is the perfect Level 1 certification rocket kit. You can even park fly it well on F and G motors with the optional MMA-2 motor adapter. As evolution would have it, this 4-inch LOC-IV rocket kit now sports a 23" booster section and 11" payload for optional dual deployment set up.
I am a Cub Scout leader and we are having a rocket launch soon. I wanted to use the data captured from the Jolly Logic to create a line graph that shows max altitude and the slope of descent over time. Nothing fancy. We are using the Jolly Logic altimeter two. Has anyone here done this? Sorry I am rather new at this but I think it would be a fun thing to show the kids!
(Link to my current tableau public dashboard with data)
What I kind want it to look like (The Jolly Logic 3 can graph on your phone)
https://www.apogeerockets.com/images/jolly-logic_products/alt-three-two-data-graph.jpg
So I have a AP physics lab where I have to make a rocket out of strictly paper and masking tape, and is also capable of being launched from a 60 psi air rocket launcher. So the goal of this lab is to get the greatest amount of hang time without the use of any TYPE of parachute, so far with this rocket design in the picture I am able to get 6-7 seconds of hang time on the way up and down. Is there anyway to slow down the descent without using a parachute? Or any other better ideas to meet this criteria?
Title^. The shipping costs for some of these motors are more than the motors themselves so I really don't want to buy them online. I'd rather drive but I don't know of any vendors.
The Michigan Aeronautical Science Association (MASA) will be hotfiring our 2800lbf regeneratively cooled kerolox engine, ME-5, today at the Reaction Research Society Mojave Test Area!
We are the student-led liquid rocketry team at the University of Michigan with the aim of developing the most powerful student built bipropellant liquid rockets.
Tune into our hotfire livestream to see ME-5 in action. Hotfire is currently scheduled to happen in a few hours (around 1:30pm PST): Youtube Stream
This seems like an awesome project to do but I have no idea how hard or dangerous it would be to try it. It seems like it wouldn't be hard to do, I would just attach a thin copper wire connected to a spool to the rocket and then shoot it off in a thunderstorm. But this is obviously a pretty dangerous idea and I don't know how I would perform it safely.
University of Calgary's student rocket team "SOAR" successfully launches there hybrid rocket 'Ouroboros' to 15,000, with a beautiful liftoff off the rail.
I'm researching motor selection right now and I'm confused on what the difference between these 3 types of motors are. Furthermore, which of these 3 systems should I invest in? I'm wanting to use my LOC IV kit for both my L1 and L2 certification. And if it's useful information at all, I also want to incorporate electronics after getting the L1 certification. I can see myself doing at least half a dozen launches with this kit.
Hello, I'm an undergraduate student in mechanical engineering, and I'm having some difficulty with the structural analysis of a rocket nozzle that I'm designing for a project. I want to analyze the stresses within the nozzle generated by the static pressure of the fluid passing through it during propulsion. I know I need to first conduct a heat transfer analysis to find the yield stress at a given temperature, and I'm using convection in this case, but I'm not entirely sure if that's the only type I should consider. Another concern is about my stress analysis; I want to use thick-walled pressure vessel theory and then apply the von Mises failure criterion, but I'm not sure if this model is appropriate since the cross-sectional area changes along the length of the nozzle. I'm open to any suggestions or proposals to improve my analysis.
As the title suggests, is it a bad idea for a motor retaining ring to be 3d-printed out of ABS? I'm not sure what sort of forces/heat the motor retaining ring would be exposed to which is why I'm asking. Thanks in advance!
I'm DIY-ing a launch rail but I want to make sure I'm buying the right sized rail. I found this 1010 8-foot rail from Grainger and I just want to double check this is the right one before I purchase it.
I'm new to rocketry, and I'm the process of developing an altimeter. Trying to create flight data with a vacuum is unreliable and I wonder if someone could share a raw details from a flight with temperature, pressure and accelerometer readings. The idea is to have another micro feed the data from a flight to the altimeter to give repeatable results.
Thanks in advance.
Hey, I accidentally ordered potassium chloride instead of potassium nitrate. How can i make Rocket propellent with KCl?
As suggested by many on this sub, I am beginning my journey in liquids with a very small engine. Probably something small enough to be called a spark igniter. To increase the safety of this project even more, I was wondering if compressed air (containing ~20% oxygen, of course) could be used in place of pure GOX. Or, in other words, would using compressed air in place of GOX reduce the risk of spontaneous combustion that exists in GOX systems? If so, this also means that I would be able to use regular (not oxygen safe) valves, regulators, seals, and grease, right?
I'm planning to purchase a Loc-IV kit and I'm going to be swapping out some of the parts. I'm also going to have to purchase some extra supplies like epoxy and rail buttons. I just wanted to know if there was anything I was missing, could add, or change out. Thanks in advance!
My Concerns with the above kit parts:
Extra Materials:
Thread Locker (Loctite) - to make sure anything with threads can't come undone during flight
Super Glue - to make temporary connections to make epoxying the fins and centering rings easier.
Sand Paper - to roughen surfaces for better epoxy bonding and bevel the fins.
Epoxy
I'll also buy some stuff later on for painting and making it look pretty but I'll worry about that later.
Elmer's Wood Filler - to seal the fins for some water proofing and filling in gaps to reduce drag on fins
DIY Launch Rail:
After building the rocket, I'm wanting to launch it on some sort of G-class motor just to make sure everything works before I drive out to my local launch site and launch it on a H motor for certification. But since I'm using rail buttons instead of launch lugs, I'll have to DIY a rail. I'm thinking about making the base a "plus sign" out of some PVC pipe and putting the 1010 rail in the middle. Is that a bad idea? If not, where could I buy some cheap 1010 rail and about how much should I need?
I keep seeing videos of people "sealing" their fins. My first question is what is the purpose of sealing the fins? Does it add extra strength? My second question is how do I seal the fins? The videos aren't showing what they're using.
Unrelated, but should I paint each Indvidual component before assembling them together or paint afterwards?