Aluminum TVC Mount | Scout Flights 2 and 3
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- Опубліковано 15 лип 2022
- Working hard to keep up a high flight rate with Scout F. We learn a little more each time and we're gonna land this thing one way or another!
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www.bps.space - Наука та технологія
The fact that it did a belly flop then back to vertical even though it still didn't land successfully was still amazing to see! A huge amount of respect and props to you Mr. Benard!!! Keep it going
It’s like a mini starship lmao
@@johndavid360 yeahh
Add maybe rockets to the top of the rocket so when it lands to give a little kick so it doesn't bounce
@@swamyolo6208 That's not a bad idea but he already ate up all of his mass margins and adding anything more such as more rockets and igniters would only add way more complexity and mass. sorry to be "that guy"
The 3 stages of control engineer grief all present in one video:
1. "I can add a filter to fix it."
2. "Filter didn't work. Need better hardware."
3. "It's all working! ... if it was actually where it thought it was."
I think I've gone through this cycle on every single one of my projects lol
And then you realise you didn't need step 1 and 2 if you fixed 3 imideatly.
@@someonespotatohmm9513 hello mr potato
Its really enjoyable to see how you overcome the engineering challenges.
When you stick the landing, you will join a very exclusive club of engineers that can reverse park a rocket (non destructively).
He’ll legit be the third person/group to do it😂
He stuck the landing on either flight 4 or 5! Look at his twitter
Closely Check 0:26 to about 0:32 - While the engine is not running, your control system is. This leads to a massive over correction when the second motor lights up. Think about shutting down gimbaling until the second motor is running. This would have made the flight MUCH smoother and easier to land. As you know the engines have a very high thrust right in the beginning and then the thrust sharply falls off. If that high amount of thrust is used for gimbaling, you'll have to use the entire rest of the thrust to correct it. - Alternatively you can use the high thrust for gimbaling but you have to dial the angle down to a fraction for this small amount of time
yep - I think "integral windup" is the actual search term. Seems like this is a huge part of the instability.
@@reid-dye Interesting. Integral windup....
Nice analysis
Good catch!
In a way that is correct, but the thing is, when igniting, the engine will point in the wrong direction and the rocket will be completly out of range for the landing pad. Letting the control system run is more appropriate as it doesn't exactly knows when the engine is gonna ignite... I might be completly wrong, and you completly right. But it is always nice to share opinions. Have a good day you all ☺️🚀
That TI-84 shirt goes crazy
Our boi tony pepperoni back with another bepis spase video
As my wife I suffering with cancer you are a bright spot in my life. Love you little jokes and am glad to see you got over the Covid blues. Keep up the great work.
It’s going to work eventually. I can’t wait to see one successfully land.
Not enough to stick one landing, it needs to stick *all* landings. That's much more difficult, because you can't just get lucky.
Oh man so close, it looked really good until the landing part...! Awesome shirt btw
“It’s the summer of Scout.” Bring it on!
the machined ''beams' you now use on your TVC mount look like you could still strip a lot of material from them. Milling through it to generate a U-shape should leave you with a part that is maybe 80% lighter, and probably just as stiff. weight that could go to something else, or just to a little more height.
A few thoughts. I used to be involved in quadcopter software development and the loop rate can make quite a difference. Some digital servos will run up to 400Hz. At that rate mechanical inertia may well help damp out spikes. It depends on the source and frequency of the spikes.
To make a simple lightweight damper for the landing gear take two carbon tubes where one fits inside the other. Add a bit of grease on the sliding surfaces for damping. You can get silicone damping grease in a wide variety of viscosities so you can tune the damping rate. If you seal the ends of the tubes you can also use the trapped air as a spring. The grease will seal well enough for the short time you need to hold pressure. You can adjust the spring rate by adjusting the ratio of open to compressed air volume.
Won't the launch forces compress the legs?
That heavy metal TI-84 calculator is my new favorite thing
Joe, when you kick that ascent motor out of the way for the descent, it is resulting in the rocket pitching in the opposite direction, which is to be expected. You need to eject it just before burnout, not wait until it stops. That way, the rocket still has upward momentum and the kickout will go directly down, with the resultant pitch of the rocket nulled. That way, it will descend downward vertically, not pitched over before initiation of the descent motor.
But there are high chances that the motor will not eject because of the little fuel burning in it, the motor is powerful enough to launch a 1Kg rocket and if the motor if giving out thrust alone without a payload, even a minimal amount of thrust is enough to not let it out.
Part 2: Also if the landing motor is fired to push it out, the thrust will just add up to the upward motion of the rocket as you said "the rocket still has upward momentum".
NOTE: I didn't make the vectoring and ejection system, I'm just stating what I think and me no professnol :)
This is some of the most beautiful machine footage ive ever seen in my life and it was just for a 10 second clip in your video.
Some of those shoots deserves to be presented in a museum
I'm obsessed with this channel.
That TI-84 T-shirt is actually epic and badass
I think the people who are suggesting liquid fueled engines are severely underestimating the complexities involved in that. I also think they don't realize that using liquid propellants kinda defeats at least part of the purpose of this entire project.
I feel like making a liquid engine in the same size as a model rocket engine would be nearly (if not) impossible.
@@helloeverything496 Meh, I don't think it would be too dissimilar to an RCS thruster. I think it's possible, just way more complicated and heavy.
Liquid is too complex, yes, however, hybrid is even simpler than the current setup because it's throttleable.
Granted, he's not doing this because it is easy, he's doing this because it is hard.
I like the fact that after 5 years you keep trying and improving.
“Motivation is the stuff that permeates your entire being when you have a clear, vivid picture in your mind of what you want to do and an intense, burning, all-consuming desire in your heart to fight for it.”
Guys he landed it!!!!!! New Twitter post!!!!!
For the motor mount hardware , I would suggest you look at the cyclic control of the Align 700E RC Helicopters. Maybe include thrust bearings in the gimble. Love watching the ingenuity and enthusiasm. It takes a dedicated man to launch at dawn.
This is so cool to watch, joe - keep up the great work!
Hey! Been watching you for years! Im happy to see how far you've come!
Never give up Joe. You've been at this too many years to quit! I would know, I've watched along with you! 😂 You got this. 🚀💪🏻
...and this is how you fall for sunken cost fallacy.
Not that I would want him to give up, the opposite is the case.
But this mindset in general is how you end up sticking to an erroneous approach for far too long, just because you've been at it for so long and invested so much time, effort and money into it.
Keep it up, Joe! Your ability to analyze what went wrong during each particular flight is perhaps your greatest gift - every iteration is a new challenge, but it's always something new that you're tweaking / improving / trying. It has been a lot of fun to watch (along with your high-altitude, parachute-assisted-descent rockets!), and I'll be here to watch every video to see how this project progresses!
Joe, you're my boi, this is top notch building and editing content
Agreed
The third flight was really, really good, amazing. That was probably the best landing attempt I’ve seen so far.
I think it's incredible you've done even this much! That 3rd flight was so close! Awesome job
It's so cool to see it do an entire starship belly flop and almost make it.
Just what I needed to watch when taking a break from coding my own much simpler flight controller for PI Pico with FreeRTOS
This is now 1 of the extremely, *_EXTREMELY_* few channels that have succeeded in making me wanna follow along on their journey enough to make me subscribe.
Парень-ты гений! Тебе пора заниматься большими ракетами! Удачи тебе в твоих свершениях!
Been watching your progress on and off for a while now. Always amazed just how difficult and complex what you are attempting to do is. I have no doubt whatsoever you will be successful. I enjoy watching your progress and look forward to your eventual and inevitable success.
This continues to be awesome. Enjoy watching you improve and move onto solving the next problem. Keep it up!!
I love your vids man! Much more praise I could give but it sums up as I get super happy when I see you have posted. Thank you kind sir!
This thing should be renamed to: BURNING DESIRE
Very inspiring indeed.
Thanks Joe!
Been a long time coming! Good work, Joe!
Love seeing these updates man! So cool to see how this project has grown!
This progress is so insane to watch! I can't wait to see it land for the first time
I love all of your projects, and scout is probably one of my favorite of the entire UA-cam ! Good luck !
Man been following you for a few years I see the evolution the skill set improving always moving forward!
You're a legend, never give up.
Dude I think I'm speaking for everyone when I say that we all love watching you progress towards this amazing goal. I have been watching since the beginning and when I look back, I am amazed at how far you've gone. Keep making these videos, they are really inspirational to everyone who watches this channel, including myself. You have inspired me and motivated me to do crazy things that I wouldn't normally do and I thank you for that.
Bounce be gone and godspeed Scout F!
Although he's critiquing the landing & find mistakes, but that launch was real smooth!! 😍
Supercool video again! I really like the detailed explanation of everything that happens during the flight. Thanks for that
Impressive work Joe! Keep it up!
Dang! She's close to landing! Love it. You will get it soon!
I wish you get a million subs asap
The more YT money you'll get... The crazier you'll build and show us...
Yaa you might say I'm kind of selfeeshhhh
I catch these videos every now and again. But wow!!! They are awesome!!! Keep going! Almost there!!
same here ! it's amazing !
Enjoyed the video as always and also keep doing such great project
Keep it up, Joe. I know you'll stick the landing soon. Also, the CNC build montage in this video was really cool.
Great job Joe, i love this channel
ooohh man, you almost there!....amazing progress mate. Congrats!
Keep going, I just love the videos and technical detail.
Inspirational. Keep it up, you are close!
It feels like you are getting closer and closer to the dream landing!
I enjoy your videos, the learn as you go. Looking forward to those successful powered landings!
Awesome video, cant wait for the rest.
Thanks.
It looks like you're so close! Keep going, you're almost there!
Another great video. Keep it up, Joe! :D
Awesome progress, love the updates!
Incredible progress so far! So close.
Also, damn close!! Especially after such a hard yaw I’m amazed it came anywhere near correcting that but it did! Well done
Great!
Keep doing.
We all are with you.
I love your infectious excitement!
I respect you and your work so much
I'm so excited with this project!
Thank you for the video. It's really great. Looking forward to the next. Sky and winds and that stuff to you.
I dig your work man, strong effort and smart application. :)
That was astoundingly good! It was vertical at touch down and looks like bounce was why it fellover (it wasn't on the landing pad). You are so so close to nailing a landing.
Would it be possible to add a lip under the nose cone to increase drag on descent while keeping the drag in the right spot for the accent? If that would even work with it's small size though
I was briefly working with drone control systems on a student autonomous drone project. I concluded that instead of controlling a parameter directly it is better to control the derivative (or second derivative). So for example when the rocket angle is off you'd control the angular acceleration (or angular velocity if your sensors aren't precise/fast enough). You could still use PID controllers but they would be cascaded. The great thing about this is that you can now control how aggressively the set point is pursued, like setting max angular speed/velocity etc. I'm sure there are better options than cascading PID controllers, but this almost always performed better than a single first order PID loop. Faster (several kHz) loops like motor ESC and self balancing etc are a different story, they need to be fast.
this video deserves much more than it has
Getting so close, cant wait for the next upload
Aside from all the awesome rocketry, I just have to say that the sound design on this video is out of this world amazing!
Great job Joe ! I'm sure this is going to work soon.
Hard pays.. huge improvement...best of luck ...
No more bounce! Excited to see the solutions. Love the progress, love the shirt
I have been working with RTK GPS systems for the past two months now as a land surveyor. It would be very interesting to see something I work with everyday being used on a rocket. On our equipment errors can range from nearly millimeters to multiple cents depending on the connection between the satellites and the receiver but I'm sure being 40mm out won't be too bad for you if your error now is about 1000mm. Also our GPS recievers are able to connect to our base point from around 15km away depending on conditions so I'm sure it could work for high altitude launches as well.
After 7 years he has finally done it
Can't wait to see you nail the first landing!!
I doubt I will ever fly a model rocket myself, but it's so enjoyable to watch you progress in this challenging hobby. Good luck on your next flight!
You can start model rocketry way easier than what Joe is doing! It's cheap and super fun to get into!
This stuff is just amazing to watch! Rockets are cool
Good to see you're still trying to stick a landing.
I sometimes go out and shoot video with one or two mirrorless cameras and usually a couple of action cameras and sometimes running a dedicated audio recorder and it can be quite a handful by myself. The I see you running what seems like even more cameras while doing a rocket flight checklist and countdown AND running a livestream simultaneously. That's nearly as impressive as it's going to be when this things finally lands like you want it to. I can't imagine how much work all of this is and how you don't forget to hit a record button or check a battery level there is beyond me.
Oh yeah and you're flying a drone. You are not human.
Keep up the good work Joe. Started following BPS the past month or so. The problem with software is that it takes time to code some good algorithms for computing the things it needs. Training Neural nets could be one idea, I mean for the ship to make the right decisions based on those nets.
The wiggle is mostly because of actuator placement. Put it far away from the hinge and use longer actuator arms with maybe additional linkages.
The irony if Scout 4 makes it through!
That would look even better with rounded corners and being de-burred.
I think you did a great job
3:30 that bit has me in tears.
I actually stopped following your progress for some time cause I thought you was hitting a bottle neck. Then I saw you got the throttling working pretty well, then I was excited. I am ME graduate student and I really think you're very close. Nice work and I love it!
I like you man and I have been following you for years. I just think the TVC craze has flown and landing it is an attempt to revisit the hype of when your channel blew up. Its good that you do really well at these attempts but dont give in to the hype of your channel and feel like you need to keep the audience happy. It might take 10 years but you will get there.
Nice Joe!!!!!!! next one will be the one!
HELL YAY idea make a detachable insterment filled ball thing with an independent parachute
that was perfect!! no one else can land solid fuel rockets! beautiful! c'mon space community give this man a CEO!
?????????? This is his company lmao and he didn’t land one (in this video at least)
You’re at a place where an $83 improvement shouldn’t be flinched at. Keep it moving, your work is gooood.
that last launch went really well imo
Keep going you're doing a great job!
Congratulations!