How do you build & fly a supersonic model rocket?
2023 ж. 26 Қаз.
16 773 Рет қаралды
The rocket flew on a AeroTech H550ST.
Enjoy the vid!
#modelrocket
edit:
For some reason at 3:14 the text just says "f", it should have said flight analysis.
The rocket flew on a AeroTech H550ST.
Enjoy the vid!
#modelrocket
edit:
For some reason at 3:14 the text just says "f", it should have said flight analysis.
For some reason at 3:14 the text just says "f", it should have said flight analysis.
So impressive!
nice work!
This is very cool!
Wow that was amazing to watch it leave the ground at that fast speed. What fuel propellent was used in this rocket. I mean was it solid fuel or liquid fuel
I used a hobby motor made by AeroTech, all AeroTech motors us APCP, which is solid fuel (ammonium perchlorate composite propellant). This motor was a H550 with the Super Thunder blend of the APCP.
Are you using 3d printed parts? If so, can I get some details? Very interested in 3d printed fins and motor retainer.
Yes i 3d print the fins and nose cone, but on the HPR rocket level 3d printing the retainer is not the best idea since it is just plastic which can melt. For the fin designs, OpenRocket, a rocket design software can export your fin design as a obj file i think, and then you can put it into your 3d printer slicer software. When i built this rocket the feature had not came out so i printed out the fin design on a piece of paper and got the measurements from it and designed it in Onshape, i don't recommend doing it that way tough because that was very hard and i still didn't get it right, i recommend using OpenRocket and exporting them. Its a really good feature and OpenRocket is free. For the motor retainer you can get them from a online store called eRockets, there is quite a few choices, some cheap, and some a little more, but i recommend getting a more high end one, its better to get a good one than have your motor fall out of your rocket in flight. eRockets also has literally everything you could possibly need for building rockets. I highly recommend printing parts, its cheap and they work, you just have to understand the limitations, like not putting it by heat or under a lot of stress.
Avionics board what does it controlle? Because the rocket was stable even that the fins was fixed🤔
Hi, I’m MRD Aerospace on a alt account, it was just data logging altitude and acceleration.
@@MRDAerospaceTWO that make sense thank you MRD.
What was your rocket body made of? Pvc?
Cardboard tubes made for rocketry from www.erockets.biz/
Great, what propellent is used
All AeroTech motors us APCP (ammonium perchlorate composite propellant). This motor was a H550 with the Super Thunder blend of the APCP.
@@ModelRocketDev it's ammonium perchlorate composite propellant
Ops, my bad.
Can you tell me how to make rocket full with high thrust
Its quite complicated at this level of rocketry, start small with kits and learn the basics and get experience, then start to scale it up, the bigger you get the more expensive it gets, the motor i used in this rocket costed about $63, the rocket without the electronics probably costed about $100, then the electronics are about $200, so thats $363. You also need HPR certification. So start small, get experience, then start to scale it up.
At 850 mph that thing would have coasted way past 3000 ft. Even if it stopped burning fuel at 300 ft up
An H550 hits really hard really quick, and then it didn't coast because my fins were thick. After the flight i took how long it took to get to apogee and how long it takes to travel 1 foot going mach one, not sure if i explained that right, but it did go mach one. That motor probably burned out not even at 200 ft.
Any rocket specs???
I said everything there was to be said in the video.
@@ModelRocketDev including weight, thrust, TWR ???
I didn't mention that, but unfortunately the rocket crashed in a later flight so i don't know either of those and i never wrote them down.
@@ModelRocketDev ok, thanks
It went supersonic and only 3k? Are you sure?
Im 90% sure it went supersonic, both of my simulations with 2 different apps agreed, OpenRocket and Thrustcurve . And 3k feet should be normal because the H550 burns for 1/2 a second so 90% of the flight is just coasting.
@@ModelRocketDev Oh I am quite familiar with the H550 DMS and RMS version and have flown many of them. Usually though, most supersonic flights go significantly higher than 3k. I guess that might be a result of your fins being rather thick slowing your rocket down after burn out. Regardless that looked like a super fun flight.
Should be a sonic boom if it went supersonic. Even a tiny .177 air gun pellet will create a loud crack if it goes supersonic.
Nope, model rockets don't make sonic booms when they go supersonic, iv seen several go supersonic and none have had sonic booms.
Online explanations of Sonic boom are very bad
Supersonic speed is the speed of an object that exceeds the speed of sound (Mach 1).
We have electronics on board in our E-bays that are amazingly accurate that tell us the speed and altitude. It is very easy to hit mach 1 with a amateur rocket. Whats hard it making one that will hold up to the speeds.
How to write to the author of the video? Or at least find his email?
That would be me, you can find my email in the channel description.