Exploding 3D Printed Toroidal Rocket Powered Helicopter
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- เผยแพร่เมื่อ 20 ก.ย. 2024
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This is the most cinematic disassembly I’ve ever seen. If you could have designed it to do exactly this, you should have. Perfection.
This would be very dangerous buuuttt, get a bunch of sections with some decent mass designed to snap off at high speed but have elastic cord running inside so after shattering the pieces kinda fly back into themselves
6:02 just for everybody courious this is the scene 👍
A surprising and impressive feature about the last flight is that the wing that stayed intact descended like a winged seed pod.
Agreed, it was not the plan but was the coolest part!
Bury it and see if it’ll grow a Prop tree 🤷🏻♂️
@@thinkflightit flew like a one bladed RC helicopter.
Like a rocket powered *sycamore seed* There might be the seed of another project there.
Theoretically, If a prop tree actually flowered, would the pods or petals grow in such a way as to follow Fibonacci’s sequence? 🤷🏻♂️ Curious …! 🤔
"But Toroidal propellers are totally played out on TH-cam, how is this going to get views?" Reaches into grab bag of words, pulls out "Rockets"
It was a pleasure getting to work with Think Flight!!! Now that's how you print, glass, and assemble a toroid propeller and rock-it.
that's how you print, glass, assemble, launch, and DESTROY, a toroidal propeller.
Great project! I would love to see a version 2, where the weak points are addressed etc. The family were sure entertained.
Inside the propeller blades, it was necessary to stretch a thin steel cable (or steel wire) and pull the entire structure from the inside, that is, to reinforce.
Otherwise, inevitably, the composite structure will be torn to pieces, and the glue will not save.
I saw this coming as soon as I noticed the 3D printed layers split the blades laterally instead of longitudinally.. should be an easy fix: just rotate the parts 90°before printing
That one white square flying across the screen in the drone footage was immensely amusing.
love the teaser of the upcoming videos, base jumping suit is going to be wild
Nice work as usual! Also great explanation on where torroidal props may actually have practical application. As it turns out the hype is wrong, but also the people saying they will be useless. Great to know!
Surprised the fibreglass covering gave up like that!
I was sure it would keep it together a lot better.
You and me both!
@@thinkflight what ounce cloth did you use for fiberglassing?
Thank you so much for de-hyping toroidal propellers and talking sense about winglets. TH-cam's wonderful "algorithm" encourages bait, hype, and sensationalism, and it's very hard to find credible sources. I'm glad you're on that list.
Yes. I now have a definitive answer on the subject of toroidal props from a humble, yet advanced source.
Thanks!
Congrats on a great project!
As a kid I wanted to build a flying rotating gadget with central conical fuel tank and ramjets at the wing tips. The concept was that once spun up, centrifugal force would feed fuel to the engines. This was in the days of control line models before RC. I never built one as I thought it might end up causing a fire. You have stirred up that dream once more. With RC it would be possible to build in adequate controls, so it might not be such a risky project today.
The military tested something like that back in the 50's or 60's, check it out on the Tube. Liquid fueled rocket but same concept, 7 minutes of run time on the rocket engines themselves, could be turned on and off.
Have you heard of the roton single-stage-to-orbit concept? It's basically the same idea. en.wikipedia.org/wiki/Rotary_Rocket
This was AMAZING!!!! Please do indeed make this a 4th of July series with smaller toroidal stuff in between it, cuz whooo-boy these are soooo cool!!
(I love your cliffhangers soo much, hahaha!)
Awesome attempts and learning moments!
13:47 Answer: Hell no. ~1 in 500 WingSuit jumps results in a fatality.
Edit: you made a monocopter!!!! ❤
Also: 9:00 first grammatically correct usage of *bigger* on TH-cam in 2023. I salute you sir 🎉😉
Also - effortlessly excellent content as usual. Thank you 🙏
I rather enjoy the noise of things spinning very fast with rockets. Great video
13:59 The sound every person makes when asked a question they know the answer to, but don't want to say it out loud ......
There is festival in Thailand where they launch such rotating rickets, and som of them are really huge. Several years ago some videos from such festival went viral.
As a German, I approve of this modern reincarnation of the Triebflügel.
Also, as an owner of an X1C Carbon from Bambu Labs, I agree. It's a useful beast of a printer.
ok... A little new to this channel (seen a few videos). But this video combined some of my favorite things (maker, "RC"ish aviation, and theory) very well. More please. Keep going!!!
Oh, you’re gonna LOVE digging through his previous videos!!! 😂👍🏼 Enjoy!
Your projects are endlessly intriguing and creative, I never know which direction you interests will take us. Thanks for sharing your adventures.
I love how informative your videos are.
Looks familiar!! Let’s add a flight controller next time😎
I was thinking the same thing....
@@thinkflight That does sound fun.
I knew toroidal props seemed almost like miracle. Thankyou for explaining their actual benefits for me.
This is why I love America. You have the freedom to fabricate a rocket propeller, launch it, record it, and publish it here on the internet. Happy Independence day!
i'm not quite sure what to expect but that propeller looks very well balanced
The single piece of toroid hovering after it all broke apart was awesome.
So glad you have the same idea after seeing the single piece still flying. Make a maple leaf seed style rocket.
The efficiency increases are in the single digits at best depending on the speed they run at since they have a very limit efficiency range for RPMs and are only really good at reducing noise within that range as well.
Also Toroidal propellers have been around since WW2, they are NOT new they are just expensive to produce and not as efficient except at a specific RPM (as I stated before), classic props can produce more thrust and can be adjusted on the fly to achieve better efficiency over a larger range of speeds
toroidal propellers are only more efficient at a very limited range of RPM? then using a rocket to power one is PROBABLY not a good test procedure
4:57 airliners have winglets also because it’s more efficient, because the more dense air from below wants to come up and fill the space of the air that is less dense on top of the wing end winglets stop the more than fair to coming up
lol I love that it got some height before flying apart! Great work.
In the firework world this is a Girondola, albeit they have effects on them. Perhaps, you are on route to perfecting the design of Girondolas.
You have the most interesting projects!
Thank you for starting with the money shot. Stayed until the very end out of appreciation.
[edit] I should have held off to comment until I watched the whole vid.. Titans of CNC has a good vid on mfg the Sharrow prop. and there is a good story
It would have been nice to through out a reference to the guy that actually brought toroidal props to the mainstream (and his patent), along with his story and how/why he came up with the toroidal design. He tells the story of him wanting to record (video and audio) an orchestra, indoors, organically with a drone. His drone was too load, so he developed the toroidal prop which was quieter. He also developed the Greg Sharrow Marine propeller which is quieter and apparently more efficient. I say this because of your marine hover-craft adventures.
his niece said "that was cool though" - definitely winning.
Epic. Really awesome concept and results! The research and theory regarding wing tip vortices is super informative, I hadn’t heard that view before! Thanks again for all your hard work!
TIMOJEN would be sooo proud of you!
Im Proud of you !
Nice Catox2
We are at such an interesting age with diy "flying machines". Technology has allowed people to satisfy so many "what ifs" that we are starting to see so many crazy things on your channel and other related ones. It almost feels like the early days of flight when everybody was trying their wacky ideas. Imagine if da vinci had a 3d printer
Thanks for explaining and settling the “toroidal” issue. It’s only useful when space or noise is limited 👍
1ft winglet =0.4ft wing extension.
what a beautiful plane Piaggio made. can't help but admire the sillouette.
Instead of rocket motors, you could attach three small brushless motors with propellers. Then you could reach indefinite hights.
I could have watched a couple of hours of this thing flying and exploding prematurely. That was wild, lol.
bring a mini cycle so that it won't waste time to collect trash or objects from the large area. stuffs like electric skate board or scooter gets very handy.
That second one maple-seeded pretty good!
i wonder if you used one blade how that would work? balance with counter weights for launch? idk but that last one seemed to stay up with just one blade and that was actually cool! the whole thing was. theres a yt'r that did something similar but with one blade but wasnt toroidal. im curious!
LOVE IT! If captain america had a prop shield...
The propeller looks very very very very very cool
Started learning CAD to 3d print a non-flight-related invention. A simple one but still challenge for non-engineers (15yr old son/me) to take a whack at engineering this product. Found this channel somehow (b/c our project resembles a UFO? 🤷♂️) now I’m fully inspired/stoked. Subbed it 👍
"If you don't try, you will never know" - Thank you for trying
Great spirit of experimentation, you will surely succeed!
I really hope you do another one of these, it was soo cool
This is awesome. One thing to note: most model rocket engines have a parachute ejection charge. I’m worried that even if your propeller holds together this ejection charge will destroy it the way you have it designed. There are of engines without the ejection charge you should use instead
we saw it go off on the chuck model at 10:20
The ejection charge can be used to ignite a second motor if two are stacked in series. This might be a method to attain even higher flights once issue of centrifugal mechanical over stressing is addressed.
@@AerialWaviator For that he'd have to abandon the 3D printing, just the nature of it makes it far too weak because of the additive layering.
@@SilvaDreams "abandon the 3D printing, " probably a good suggestion for round 2
That second one was pretty cool with just one wing like a helicopter seed 😂
I wonder if print direction would have made it stronger. In theory it shouldn't with the fiberglass covering but those looked like some clean breaks like layer separation. Maybe the fiberglass was able to delaminate from the print. CNC Kitchen did an interesting video on direction specific reinforcement with carbon fiber that could be useful here. That is ditch the sheet. Use actual fibers in the direction you are concerned about.
Gyroid infill is weak. Each layer is barely attached to the previous, because of the x,y,z offset. Regular infill, where x,y are constant, is much stronger.
Most important:
Line 60!
Finger crossing that you get your answers!
Thank you for talking in some depth about toroidal propellers and airfoils. The MIT paper caused some hype and misunderstanding and the Sparrow Marine boat prop, while widely accepted as better than standard models, advertises specs that are difficult to believe.
Adding bi-plane interference to a propeller does not inherently make it better, but fluid dynamics software and modern manufacturing do allow us to take advantage of more complex shapes. If nothing else, the MIT paper has spurred creativity by expanding the box of potential lifting shapes. The hype may fade, but we're now obtaining the tools to take full advantage of the 3-dimensional space available for our propellers and wings.
That software would be absolutely awesome to see going through iterations until the design is optimized.
That's what is shown. But there are more examples on my channel.
Great experiment. Looks like it would have been 100% successful if the propellor hadn’t come apart. Please do a round 2.
and when you do round 2, learn from the failures of round 1.
It's an outstanding concept. I hope you try again.
It broke along the layer lines. Try orienting it differently when 3d printing; have the forces act perpendicular to the layer lines, not parallel. Also, can we get a workshop tour?
This is tremendous!
"Rapid, Unscheduled Disassembly" 🤣🥰😜😁💕
The fact that this is 3d printed is crazy
its incredible what can fail with 3d printing!
awesome now copy tom stanton and make an air engine plane that has overhead valves :)
Rctestflight did tests on the toroidal props for a boat and he found very limited efficiency gains. He definitely had room for improvement on his tests/design but it did show its worth being pretty sceptical of big claims without proper large scale field testing
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safety third! cool project, maybe if you glassed over top of the print it would be much stronger in the centripetal direction. you could technically load chutes into the tip rocket tubes to bring it down safe.
I did glass the whole thing but apparently not enough.
Someone didn’t watch the whole video before commenting.
@@brandonloukota4760 busted, I wanted to see the fireworks.
@@thinkflightRun a safety wire internally along leading edge, from tip to hub. It'll both pull the structure together and stop pieces flying so far when it does crash and break up.
@@thatguy2201 "stop pieces flying so far when it does crash and break up" I love your confidence in your own safety suggestion.
the increased speed of a bambu has a detrimental consequense to layer adhesion. Print it on your Prusa for better layer adhesion (no fanboy but have both printers)
Built regular rocket and jet propellers (like that's a thing) In KSP all the time, they actually worked reasonably well.
Toroidal props have no reduction in noise .
It's all worth it when you get "It's cool though!"
A rocket propelled propeller is one of my ideas for landing payloads on mars.
The blades would be inflatable carbon fiber that harden in the UV light of the sun during the trip to Mars.
They would be deployed and inflated after launch.
Then the giant "helicopter" would use aerobraking to reach a low circular orbit.
Then when it takes the plunge into the atmosphere it would feather the blades to spin them up during entry (like autorotation with a real helicopter).
Then just before "touchdown" it would fire small SRMs in each blade then place the payload on the ground then the blades would detach and fly away leaving the payload on the surface.
bla-bla-bla-bla-bla reality check
the atmosphere at mars is not sufficiently dense for a 'rotor' to work; as a parachute or otherwise. nasa's hovering uav on mars is a LIE.!!! it can be SEEN that, in earth's atmosphere a rotary-wing vehicle can fly only so high; because the air gets too thin.!
the martian atmospheric density is estimated to be equal to six-tenths of One percent of earth's, at sea level. that equals a factor of .006. [ mars - 608 pascals. earth - 101,325 Pa. total vacuum - 0 Pa. ]
I clicked on all your ads, even the one about the paper towels
Sycamore tree spinner. AWESOME
Cool project! I would not have minded some repetition of the actual flight footage, perhaps with commentary and a little slowed down.
But great work as ever!
I notice you are using electrical leads of equal length. Always a possibility of the leads touching when you do this. If you are open to a suggestion, cut one lead shorter than the other to stagger the connectors.That way, + and - are never close enough to ever touch one another even if the wires are side by side.
Might need a part 2!
Try some exhaust wrap or some fiberglass materials to wrap around the rocket engine. This should help keep the heat from melting the plastics. This may have also been a point of failure as well. As when the heat started to deforming the plastic it would probably change the angle of thrust on the rocket creating more and/or changing the stress points on the model. Also Maybe develop a recovery system so you can reuse it and mayhap try with a few size smaller rockets working your way up.
lmaooooo the BASE jumping bit at the end...
That was very fun to watch!!!
As advise, next time try to print it with horizontal layers all across x and y axis, it will be much more stronger for bear that G forces.
Nice job on that Apogee Aspire!
Someone noticed :)
Hey dude, for your own safety, please wear a helmet and goggles. That board wasn’t completely covering your head and you will still get hurt if a piece of that propeller or a rocket hits your head or eyes.
And you might build even more powerful projects in the future. I recommend building a very sturdy, folding shield that you can secure to the ground with temporary stakes, and is large enough to completely cover you. If something hits that board with enough force, it could still hurt you or break through the board. Securing the board to the ground and standing back from it can help your safety.
And a cheap motorcycle helmet with a visor also might work. Although for your safety, be sure that a motorcycle helmet or whatever you choose to wear will work to keep you safe for your tests.
Everyone thumbs up so that he sees it, and repeat this to him on his videos, don’t want him to get hurt.
Amazing production dude!
This reminds me of the ring type rockets they launch in Thailand. Very cool.
Those were my inspiration, and your comment made me realize I completely forgot to include that part. Missed opportunity!
"Is base jumping safe?" That's a awful long pause there...
Try: replace the rocket motors with ducted fans. Capture the blade tips inside a groove in the duct to reduce the generated noise. Far more altitude, more controllable. BONUS: use that flying platform from which to launch a rocket.
🤔ooor... he coud replace the rockets in the tips of the toroidal propeller with small toroidal propellers...
@@juanaq Wheels upon wheels, or wheels within wheels.
The problem with fast printers is that structural parts still need to be printed slowly. I think you should print these again but with different filament and half the speed. I found this out the hard way with my ratrig vcore printer. It was great printing benchies at 8 to 12 minutes. But when it came to actual parts, I couldn't use that speed. Especially with ABS.
Very cool. Why not print it with a channel right through the centreline of each blade loop and run a tensioned steel cable through it?
A printed "hole" along the span to glue in a carbon spar could fix the disassembly problem with vefry little weight.
agreed
Maybe try biodegradable 3D printing material next time. Wild design, keep going
Very cool. Your outro was hilarious.
That was spectacular 🤘🏼🤘🏼🤘🏼
although it will require more sanding, printing the airfoil with the leading edge down would grant stronger results due to the direction of the grain =)
What if you were to add strings or wire into the foam like what we find in bicycle helmet? This could prevent the full separation of the propeller. Say a strand of fiber glass like we find in fiber optic cable. they are very small and super strong.
the centrifugal force of the blades mass far outweighs the centripetal force applied by print laminations...
it might have held together if the hub had been laid up the other way.
Could you use some type of brace on the outside (targeted to the areas where it specifically broke off)? This way it keeps the weight down from the extra printed materials...I'm imagining straps on the outside...perhaps something knitted, or elastic wich will have inwards pressure, and hold the form.
Very light carbon rods in channels under the surface of the airfoil would easily hold this together. But wouldn't have made for as exciting a video :)
You are a genius. Respect!