Making a Fin-Controlled Model Rocket

[@BPSspace]

This is awesome! Lookin forward to seeing it fly :)

[@jacobthornhill]

Thank you! So am I. I'm very excited to learn more about your fins with embedded servos!

[@LafayetteSystems]

This is an a awesome project, can’t wait to see it fly! I love the carbon rod mechanism you have of attaching the fins, looks very strong yet simple to assemble!

[@jacobthornhill]

Thank you! Needless to say, I have been loving your series on Diamond-X!

[@phlimma]

Amazing. Just very sharp, like Supreme Leader Aladdin ordered. "The missile is too round, it needs to be pointy! Round is not scary. Ponty is scary. It sticks in the ground and then kaboom."

[@ryderr4453]

Very very cool as always, looking forward to seeing more progress!

[@ianhorsley4751]

Another excellent video with clear explanations. I imagine lots of testing & simulation. Great to hear you’re using C - still the set language for embedded real time s/w and do reduce any need to resort to assembler!

[@m_jackson]

Great stuff. I would change the linkages so that you get more torque, and less travel on those fins though. At high velocity, you will only need a tiny movement for control.

[@stratos2]

Cool rocket! Just make sure that the stronger new ejection charge won't rip your rocket apart, or the shock cords out of the rocket

[@AerialWaviator]

A fascinating design. Nice work taking time to test each system on the ground so can integrate and improve the design. Too often on youtube, projects rush to risky demos. Great progress here, looking forward to seeing your next update.

[@oed1461]

It's literally awesome

[@AirCommandRockets]

Great progress update. Looking forward to the flights. :)

[@jacobthornhill]

Thank you!

[@CalMariner]

So excited! Also, if PCBway is sponsoring you, have them cut out the motor retainer from aluminum or titanium. That's a perfect part for sheet metal.

[@jacobthornhill]

Thanks! That’s the plan…

[@grinselbub]

That is some really serious engineering! Keep on going. 👍

[@ullashbiswas]

It's awesome 🎉.. and best of luck for your future work ❤

[@grugbug4313]

Solid! Top KEK! Peace be with you.

[@Partridge22]

I'm here for all of it Great Journey hope it goes well

[@KofiAsare0]

Incredible work and video, looking forward to those flights!

[@radovansemansky4618]

this is excelent profesional project- I love it , excelent job!! 1000x thank you

[@nicola_gaiani]

Great project! I’m working on my first rocket on my channel, and seeing this is very inspiring!

[@Plan-And-Build]

in the TSP motors you can remove ejection charges by unglueing cardboard from the top of motor

[@АртёмКочетов-к4к]

Great work, dude!

[@QTR974QTR]

thanks from afghanstan😎😏

[@ahmedbensalah4942]

😂big love to the islamic emirat of afghanistan ❤

[@ivolol]

Finally, someone not subject to ITAR

[@Bob_too]

Amazing. Love the concise explanations and rationales for the design choices. 🚀

[@alexpheonix276]

Definitely interested in control Software approaches. Currently working on a similar project and some tips would be great!

[@jacobthornhill]

I'll have a video out soon on the electronics and firmware, so stay tuned!

[@billyredtail]

This is fantastic. I've got one more year of 6th form and just discovered Phil's Lab. It's time for some long-term projects! I saw that you're 18 and likely going to university now. I highly recommend you join one of the university rocket teams and make your skills known, it is my hope that I can join the Bristol team when I get out so let me know if that's where you're headed.

[@arro_rockets]

Sick video! Seems very thought out!

[@yusufsahin7382]

What is the software for design roket ?

[@nikstere4871]

I would like to have another video on the flight computer

[@mojaverockets]

Excellent work. I'd like to do this with a 4" motor in a 5 or 6" airframe and then scale up.

[@JackOHaraEngineering]

Great vid, would love to see the software solutions, particularly for state estimation

[@georgewilson6020]

This is going to fly!

[@mbbopzzfnm2905]

Best Chanel I’ve ever found. How do you have less than 10k subscribers 😱😱😱😱

[@jacobthornhill]

No way its mbbopzzfnm

[@seventeenshaun6424]

Very much interested in another video

[@elias-zl6jj]

Incredible works, do you have downloadable plans ?

[@jacobthornhill]

I have a few STL files for my previous rockets on my Patreon. I'll be uploading the fin mechanism shortly!

[@SovaEnergyCBD]

@@jacobthornhill I am really looking forward to the fin model, I am engaged in a similar project

[@məmmədov]

Hello, I am a student. I have a project about rockets and missiles. I have a few questions about electronic systems. Can you please help me? Where can I reach you?

[@zherui2003]

may I know what is the software at 0:40 ? Isn't it open rocket?

[@jacobthornhill]

Openrocket - it’s free!

[@lianmollick4845]

very interested, please post more and more everyday

[@ahmedmoustafa6829]

Brillant, what was your control algorithm used?

[@javir1669]

Make a guidance kit for a unguided rocket please

[@Allan_aka_RocKITEman]

Great video...👍

[@mattcormier983]

There isn't enough gas volume from the parachute charge for that long tube. You need a gas piston with a small chamber by the motor with a connecting rod up to the chute.

[@charvakkarpe]

Good catch! It's obvious once you mention it, but I didn't think of the reason of failure and your solution. The piston doesn't even have to seal very tightly, it's just a fast burst of gas.

[@mattcormier983]

@charvakkarpe a loose seal should be fine. A "dog bone" shaped piston to keep weight and space down should do the trick.

[@abdoulayeyahya6584]

Great job , i would like to know which softwares have you used on this project.

[@alishinawii3502]

fins for ayrodynamics ,it moves ,righ,left,up,down,the missile spins ,from inside ,somwtjing with wieght a motor .but up down is vectoring .

[@RobertSmith-wj7zf]

Very cool! I’m interested in your firmware. Did you write a Kalman filter? What IDE and libraries did you use? Oops, never mind. I just watched your other videos. Very impressive!

[@fishangler1515]

what your aplication for draw thats roket?

[@UveshChoudhary-z9s]

Which software you use build 3d project

[@gameozone3597]

Nice project ❤like from India

[@aiz933]

What is the application for design roket ?

[@RoboArc]

Might have to ditch those estas rockets all together and make a small motor.( ditch the charge ) I also like the idea of mechanical ejection. That allows much more control. ( use spring or cord for this.

[@SpaceIsCool.]

That is epic!

[@AndrewAllen-d7k]

Where can we find the printing files?

[@johnslugger]

*I have worked on AIM9 missiles while in the air force and surprisingly they use dirt cheap IN/OUT - PUSH/PULL solenoids that do not have a fixed spring. When running they simply FLUTTER at 600 htz. and to make direction changes its done by hundreds of very fast extreme turns. This gives guided missles the ability to make extremly sharp turns very fast and is 10,000 times more reliable that a servo. It also uses much less logic. The most amazing thing is the extreme prices for items that could be make so cheap. I have built designs using an Adrino clone for $3.00 that could steer an AIM9. There is so much money to be made in military contacting it is sickening but you have to follow their rules which is what makes items so expensive. That's why I think small countries like Ukraine that can make their own 'WIZZ-BANGS' in their basements for pennies are going to win many wars in the future.*

[@maigurens]

What software you're using to build the rocket?

[@mr.hijacker9568]

Very nice

[@oxpox6736]

1:50 what do you mean by the adverse effects of print orientation?

[@jacobthornhill]

Sorry, I should have explained. 3D printed parts are often weakest at the boundary between layers, so you often have to alter the print orientation to avoid loads that would act to separate the layers. The problem with this linkage is that it takes loads in several directions, while also needing to be press fitted into bearings (3d printed shapes are typically most precise when in the xy plane, which limits the print orientation). So all that is to say that I found it worked best when printed in 3 parts in varying orientations, then glued and bolted together.

[@oxpox6736]

@@jacobthornhill Wow thanks, this explains a problem I've been having with my builds. tho i wish the software could compensate for this during the build

[@oswaldogarcia7327]

A project I must also do.

[@davidsivanovs7093]

Awesome

[@mertdlkmn]

Can you share the documents you used during this process with us?

[@myeducationandresearchchan-i5w]

Hi, Could you tell me where you got the servo to fins control links? Du Bros?

[@abidibnazam4462]

What kind of software are you using for the diagram?

[@xavierdixon161]

Wish yall took calls man i have so many questions and wanna try this but i need some guidance

[@jepleet]

what 3d cad did you use?

[@santosh18mar]

Can you tell me which software are you using to design

[@alexw5298]

been wanting to make a thrust vector control rocket and am wondering what kind of fuel you are using for your rocket?

[@bengamble7033]

Would you consider dropping the stls?

[@jacobthornhill]

The STL files for the fin mechanism are available on my Patreon (linked in description)

[@bengamble7033]

​@jacobthornhill what about the entire rocket? I like it spot but I suck at cad

[@joshuabrazier8080]

Hi, Jacob! I have seen a number of your videos and I wanted to ask for some advice. As someone with some programming experience but no experience in flying model rockets nor in 3d printing or soldering (although you mentioned both KiCad EDA and PCBWay) who would find it cool to get into model rocketry I am quite nervous about getting into the world of designing my own model rockets. While I have used Fusion 360 before it was only to create a basic nose cone and I have never created an Arduino setup so there are lots of things that I have no experience in and while I know that there are specific launch sites frequented by model rocketry groups here in the UK I am unsure of whether or not model rocket launches can be held at e.g. the local empty park during a sunny day or in one's own garden with permission of the homeowner. I have used OpenRocket Simulator and designed a basic model rocket that hopefully would work correctly when flown however that's the extent of my model rocketry so far. Contained in your video content there is a static test firing of one of your model rocket motors to see if the separation of your model rocket sections would work correctly and I thought that this static test firing was done in your garden so I am wondering whether or not I would be able to do the same thing in the garden where I live with permission without needing to seek approval from anyone else? Furthermore can you please tell me whether a Bambu Labs A1 mini would be sufficient to make a reasonably sized model rocket such as the one you made and displayed in your videos? Making a model rocket like the one you have made is a fantastic achievement in both engineering and software development and this is coming from a mathematics graduate so you should be proud of all that you have accomplished. To summarise I am nervous about getting started in 3d printing and model rocketry and I am wondering please what you would recommend aside from contacting an existing model rocketry group? In addition to the above I have already discussed getting started in model rocketry with an existing model rocketry group who have been informative however as someone who has accomplished a lot on their own without those accomplishments seemingly being performed as part of a model rocketry group your recommendations would be really informative. Thank you for reading and good luck in your future flights! I feel that this is a good time to type: Ad Astra per Aspera!

[@elliotyahya3756]

hi what software you are using for designing

[@alishinawii3502]

delay mixture when the actual mixture ends the parachute charge which is slowed maybe idk.

[@matthewthornhill97]

Great sound design- you should work on movies sound

[@Amittttttttttttttttttttttttttt]

dammmmmmm good job man.

[@thekingbanana7323]

What software are you using in the video?

[@nemanjapikelja1774]

Cool you should make it a heat seaking missl... i mean rocket

[@petatirrumator3005]

bro making icbm at home after finishing school.

[@charvakkarpe]

Lol. Next steps would be celestial navigation and heat shielding for re-entry. Re-entry is the hardest part of making an ICBM. Even satellites don't have to solve that problem.

[@TinyHouseHomestead]

You need to "double connecting rod" them fins, unless you are gonna use "low power" motors! 😱😁😝🤪👍👍🇺🇸

[@VikasSingh-xm2oq]

What kind of firmware you are running on your STM32 Rocket flight controller? Is it some kind of open source autopilot firmwares like ardupilot or PX4 modified for rocket control surfaces and actuator controls

[@jacobthornhill]

I'm writing my own firmware in C, and I'll be posting a video about it in a few weeks when it is more complete

[@inadad8878]

FPV rocket?

[@arifmartoyo]

Thank you....

[@Smokeslingerowner]

Parachute should eject when apoge is detected

[@maazshahid8920]

CFD tutorials please

[@aesatishchaudhary5933]

what is the name of this software

[@oed1461]

Openrocket

[@the_samsung_simp]

how did this not violate itars?

[@ChucksSEADnDEAD]

Steering a rocket doesn't make it guided. For example there's legitimate reasons to steer an amateur rocket, such as pitching it towards a better landing zone before popping the chute.

[@jacobthornhill]

I’m not American, so I don’t think US export regulations apply to me! Even so, what I’m making is by no means sensitive military technology, and is certainly not a weapon.

[@awarminger2625]

Shush

[@sampamnl.8964]

ขอบคุณมากครับกับสาระดีๆ❤❤❤

[@railgap]

When a rocket is guided, we call that a missile.

[@jacobthornhill]

So Saturn V, along with every other launch vehicle, is a missile in your book?

[@aripjamaludinrumi]

woooowww🥳

[@leog1557]

Jacob Thornhill

[@jacobthornhill]

Leo G

[@flybygaming7982]

Okay but, what resources can I use to learn how to code for a project like this? This is awesome!

[@SovaEnergyCBD]

A friend of mine is doing the same project, I want to send a rocket into the sky to catch lightning. Could you share a 3D model of a rocket for printing? I will be very grateful

[@ShaileshWaran]

Add a explosion to the cone , we got a third world Missile to destabilize the region .

[@tikitime]

Guided missile? those canards are going to be problematic as you approach mach 1 😤

[@Alio_5-j5b]

Hello, you are a professional I need 3D files Can you give it to them

[@Mhmmmmmmmmd]

We need 3D design, please

[@3d1e00]

Could have just pushed a coupling pin up? And then they would just fall apart? Rather than trying to push the whole half.

[@jacobthornhill]

This is a very good idea, thank you! I’ll definitely look into this. If I end up using it, I’ll make sure to credit you!!!

[@3d1e00]

@@jacobthornhill got some interesting problems with it. Good luck, I would be tempted with a plunger with holes to calibrate force and some type of locking pin that prevents pulling apart prematurely. All the best 👍 as an edit consider how roller delay blow back on guns work. HK use it. Similar problem here I reckon.

[@sahibdipsandhu]

u cant tell me that aint a missile

[@piconano]

Do you or anyone knows if this is legal in Canada?

[@ImayavarambanGK]

Respected sir, I am a student pursuing aerospace engineering. I want to make a model rocket like yours for my final year project. Please guide me how must i begin with this project. I promise i will give my heart and soul to the making of this project, please guide and support me.

[@yobtnirp3D]

Strap some tnt to it and you got yourself a missile

[@lego527]

In my country if I launch this will be alert about air dangers😂 then our ale defense system shot down it 😂

[@Smokeslingerowner]

So much unnecessary mass in the control system.

[@Smokeslingerowner]

That's illegal in the USA for civilians.

[@VovelPunch]

pcbway the communist way

[@amandahugankiss4110]

chiner