Your original video many years ago was a big inspiration to me to try similar things. Back then I worked in construction after dropping out of school. Now I work for one of the biggest aerospace companies in the world. Thanks
Hi Adriano, you are my inspiration. My bachelor’s thesis and master’s thesis were both focused on missile/rocket control, and it’s all because of you, dude 😂. Now, I teach military missile systems at the Indonesia Defense University and work for a State-Owned Military Industry. All of this started with your video 13 years ago. Thanks, man, you’re truly an inspiration 🎉🎉
I looked for you on linkedin and found your paper. Glad to hear you keep building . Thank you for inspiring us all. I learned how to make PCB's for my rocketry , and aspire to work in aerospace someday. Thank you !
I am glad you are here. I have sent you countless emails about your project of 13 years ago. but no response. I am now about to finish my thesis about 6dof 2 stage rocket and first stage recovery using circular parachute and parafoil (yes two method of recovery). I hope to learn more from you.
At the end of the video, you said "There is a delay In the action of the controller". I think it is normal, cause the PID algorithm continuously eliminates errors between setpoint and process variables. It means there must be an error before the controller can do something, so it always has a phased shift delay between the controller's acts and the error. Oh, the impact part (servo) also needs time to rotate. In short, it is a normal delay.
Awsome video. I am working on the same project for a student team rocket and this is some good reference. I would love to see more about any analysis you did of the fin snapping off.
The truth is that the way the fins were attached to the axis was very wrong. Also, the axis are in unidirectional carbon fiber which doesn't help at all. I look at this now and I'm surprised it broke just in one flight. Have a look to the "Pictures" folder on GitHub. You can clearly understand how the fins were attached.
Awesome video! It's really well put together, and the project is really impressive. Not an aerodynamics expert by any means so take this with a grain of salt, but I've heard that when using upper fins/canards to control they can cause vortices which lead to instability and unpredictability. One way of getting around it, I've heard, is to allow the rear fin can to freely rotate. Maybe that's why they rotated?
You are definitely right. And is also probably the reason that caused the 9° to be not enough during the maneuverability test. At that time I just neglected the effect on the tail fins considering that my rocket was subsonic and control fins were quite far and small compared to the tail ones, but this assumption was clearly wrong. Investigating more (see link below), my rocket should have an adverse roll produced by canard vortices interacting with tail fins around the 30% in magnitude of the one produced by control fins. Probably, for a future work, I would just keep the same design considering the performance reduction and adding some shear pins between the two sections of the fuselage to prevent slipping. Induced Roll of a Canard-Controlled Missile: arc.aiaa.org/doi/abs/10.2514/6.2010-4226
I have a question. Why do we need a PID controller to control the servo when the servo is actually a close loop controller, you just input the angle you want and the servo circuit does all the thing last to reach the value.
@@nicola_gaiani thanks Nicola. I used After Effects for 2D, starting from some rendered images I did in the past. The 3D animations are done instead with "snapshots" function of Rhinoceros. That is not really made for this. The motor is homemade. Follow the github link in description and read the thesis. It's in Italian, but you are Italian...
@@tuliopireso After Effects for 2D, starting from some rendered images I did in the past. The 3D animations are done instead with "snapshots" function of Rhinoceros. That is not really made for this.
Your original video many years ago was a big inspiration to me to try similar things. Back then I worked in construction after dropping out of school. Now I work for one of the biggest aerospace companies in the world. Thanks
@@kevo6242 Thank. Earing I'm an inspiration for someboby is the best reward possible!
Which and through what steps
Hi Adriano, you are my inspiration. My bachelor’s thesis and master’s thesis were both focused on missile/rocket control, and it’s all because of you, dude 😂. Now, I teach military missile systems at the Indonesia Defense University and work for a State-Owned Military Industry. All of this started with your video 13 years ago. Thanks, man, you’re truly an inspiration 🎉🎉
Thank you so much
I looked for you on linkedin and found your paper. Glad to hear you keep building . Thank you for inspiring us all. I learned how to make PCB's for my rocketry , and aspire to work in aerospace someday. Thank you !
The lower section rolling is fascinating. It's like the SA-8 OSA which had canard controls and a rolling fincan since these torsions are disastrous.
I am glad you are here. I have sent you countless emails about your project of 13 years ago. but no response. I am now about to finish my thesis about 6dof 2 stage rocket and first stage recovery using circular parachute and parafoil (yes two method of recovery). I hope to learn more from you.
I'm so sorry. I actually didn't check that mail for many years
At the end of the video, you said "There is a delay In the action of the controller". I think it is normal, cause the PID algorithm continuously eliminates errors between setpoint and process variables. It means there must be an error before the controller can do something, so it always has a phased shift delay between the controller's acts and the error. Oh, the impact part (servo) also needs time to rotate. In short, it is a normal delay.
You are right, some delay is expected. The point here is that the controller responsiveness is far from ideal and could be improved a lot.
we are all working in your footsteps !
I hope for more frequent content, subbed.
When we needed him the most... keep up the work!
Thanks for posting this! Nice job!
Awsome video. I am working on the same project for a student team rocket and this is some good reference. I would love to see more about any analysis you did of the fin snapping off.
The truth is that the way the fins were attached to the axis was very wrong. Also, the axis are in unidirectional carbon fiber which doesn't help at all.
I look at this now and I'm surprised it broke just in one flight.
Have a look to the "Pictures" folder on GitHub. You can clearly understand how the fins were attached.
Awesome video! It's really well put together, and the project is really impressive. Not an aerodynamics expert by any means so take this with a grain of salt, but I've heard that when using upper fins/canards to control they can cause vortices which lead to instability and unpredictability. One way of getting around it, I've heard, is to allow the rear fin can to freely rotate. Maybe that's why they rotated?
You are definitely right. And is also probably the reason that caused the 9° to be not enough during the maneuverability test.
At that time I just neglected the effect on the tail fins considering that my rocket was subsonic and control fins were quite far and small compared to the tail ones, but this assumption was clearly wrong.
Investigating more (see link below), my rocket should have an adverse roll produced by canard vortices interacting with tail fins around the 30% in magnitude of the one produced by control fins.
Probably, for a future work, I would just keep the same design considering the performance reduction and adding some shear pins between the two sections of the fuselage to prevent slipping.
Induced Roll of a Canard-Controlled Missile: arc.aiaa.org/doi/abs/10.2514/6.2010-4226
Thanks For Sharing.
HE IS BACK OMG
I have a question. Why do we need a PID controller to control the servo when the servo is actually a close loop controller, you just input the angle you want and the servo circuit does all the thing last to reach the value.
The servo control is in open loop as you say. The PID coses the loop on the rocket roll
I ended up here ... Thats an achievement for me
Use a sinebar and linear servo for your canard surfaces. Way more accurate
Nice video and work! Were the animations made in blender by any chance?
Also, what rocket motor did you use?
@@nicola_gaiani thanks Nicola. I used After Effects for 2D, starting from some rendered images I did in the past.
The 3D animations are done instead with "snapshots" function of Rhinoceros. That is not really made for this.
The motor is homemade. Follow the github link in description and read the thesis. It's in Italian, but you are Italian...
Really nice... Which software for the animations did you use?
@@tuliopireso After Effects for 2D, starting from some rendered images I did in the past.
The 3D animations are done instead with "snapshots" function of Rhinoceros. That is not really made for this.
Gyroscope or rate gyro?
Rate gyro. Measures angular speed