Weird Airplane Experiments (tank tread propeller, spring plane, multi-wing plane)
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- čas přidán 11. 06. 2024
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Be safe and use your head people! - Věda a technologie
That tank propeller idea is interesting - but next I think you need to make the weird propeller-flying-saucer thing from the first Incredibles movie.
that sounds like fun! maybe a counter spinning blade inside of it or maybe even a flywheel to counter act the out track would be interesting
Agreed! I think this tech has more use in drones than in planes, something more akin to a quadcopter
@@1RAH Yeah I think you would need two rows of external contra-spinning track blades. Either way a fun idea
or an electric chainsaw version! :D
You think too much
I think this would be a great new series, taking weird ideas from the past and seeing if you can make them fly
A Stipa-Caproni airplane!
@@teresatran7967that is coming soon-ish
Yea!!! Like some of the odd DaVinci Planes and Copters!!
@@PeterSripolI've had this fan belt idea since 2021, I just haven't made one yet. I remember thinking in my mind about having a ceiling fan, as a belt with fins that travels across the wall of a room. I might make one someday, who knows.
@@PeterSripolFly a car radiator.
Neighbor: “There’s a window shade floating outside my house.”
Another fun video. Thanks for sharing, guys.
The flying radiator's part of the problem was its wheel configuration. two of them directly underneath the wings.
Maybe if you open up the "triangle" between them a bit, you could achieve a more stable takeoff and avoid the still pivot thing
Yeah, bring those wheels out near the edge of the bottom wing and extend the rear wheel back a little bit
Printing the blades standing up was likely a large part of the fragility issue. Laying them down would create significantly stronger parts, though it would probably require some support material.
Also turning the infill up on the print settings (infill is how much plastic is inside the print)
I'm pretty sure Peter already knows that
@@MeliacPropulsionLaboratory Infill is most useful as inner support for structure/overhang rather than strength. Wall count (perimeters) contributes much more to part strength than infill.
@@MarkGhebrial probably but you never know when a simple solution can evade you, peter probably also appreciates the comment for the suggestion.
@@FrandChaiyeah. If not for the suggestion then for the algorithm. There’s a lot worse comments people could choose to leave
Making old failed flying experiments actually work is such a cool thing to do!
I wanna try making either a bullwhip or cheap rocket fuel with stump remover for toys
Bullwhip with paracord and bbs inside sounds like a good, easy, but relaxing and time consuming project
That stock footage pun was something i was not braced for.
Oh god, this comment made my brain buffer
The 20 stack is insane. To see it actually fly is outstanding and doing some acrobatics too..
Good stuff.
I'm impressed just how persistent Peter is... Everything is ahowing him that it won't work, but he knows he can make it work. Mad props lad
Haha, mad props... how ironic
@@mc-dev so glad this was ur comment I was thinking the same thing 🤣
@@mc-dev ahhhh that got me good cheers
Yeah, he never gives up on these crazy ideas until he has at least some success. That's what makes it so fun!
Actually, no. It's saying that it doesn't work as is but is viable. Fix the design.
For the tank tread propeller, you may be able to prevent the tips of the blades colliding by implementing a continuous curvature guide plate for the "treads" to ride on. Right now you are going from linear motion to rotary motion with no ramp up/down in speed, which is causing the blades to bunch up at the intersection where the treads overshoot coming off the drive sprocket.
You mean make the track a circle?
@@2degucitas Probably thinking more like an oval.
also a tension wheel would help a lot.
Make it tank track shaped they are shaped like that for a reason😂
@@2degucitas What I'm trying to explain is about the original shape with sprockets and flats. Kind of like how all squares are rectangles but all rectangles are not squares. A circle is a continuous curvature, but not all continuous curvatures are circles. Its hard to explain in words, so here is a diagram that shows the difference between a CC corner and a true radius corner (which the track design is) forum.affinity.serif.com/uploads/monthly_2018_02/1*PIHFvGyy5sWK_d0MX_PhMw.thumb.png.6f41e201524397b574e3a005b6f96da5.png (Or simply google continuous curvature corner if you dont want to click random links)
Mom: Please stop making planes out of my blinds.
This video gives the 2015 video vibes
I was shocked that the flying blinds worked so well! It was surprisingly stable in ways i hadn't predicted at all lol
*Venetian plane
stable thanks to gyro stabilization I'm sure. much like an F-117 , so unstable, no human can fly it without sas autopilot keeping it level.
@@williamedstrom5681*Flying blinds
Agreed
Getting that multi-wing plane to fly like that was an absolute thing of beauty! I loved it!
I had always wondered at how that design would be stable, and how much lift it would get. Could you imaging if that were to come in for a strafing run? Some dude on an mg just spraying at it not being able to tell where to hit that mattered, lol
correct me if im wrong but could you just make the tail alot longer and heavier so the center of mass was more on the middle bit
It has too much lift lol
In a good way
For the caterpillar tred plane you could have just put the blades around a big circle. That way there would be less blades bumping into each other, and you would obtain a more constant thrust as well.
That multi wing plane was amazing, so goofy looking yet it seemed to fly well. Really well done and Very entertaining
The collisions on the tank track prop blades was from the blades being violently taken from a circular to a linear motion. They wanted to go round and pitched forward while the next blade was already on the straight path forward and the tips collided. If you put some suppord rail under the tank track to avoid the track from bending in after the wheel it would reduce the problem and help with blade longevity :)
THIS! I was so mad they didn't address this!
@@SenorBagel2552same!!
It needs an elliptical path to follow. That will give a better transition from rotating to straight.
Yep.
Offset each second one front/back
don't forget the pull on the " flexible " track. they don't move just in the axis of the track but they move but also move forwards and backwards. hence the massive loss in propulsion.
I think the tank tread propellers have merit; just have them on a circular track. Then you essentially have a prop that rotates around a circle, rather than an axle. You could then have propellors wrapping around the hull!
Or at least an elliptical track. I think there's a problem when the blades come out of the turn and have to decelerate quickly, causing them to bump into each other.
There are so many better ways to achieve driven rotational motion around a hollow shaft. I hate when people online randomly claim that a mechanism would produce too much friction, but in this case I'll bite the bullet and say a tank tread would definitely cause too much friction for it to be worth any practical use, especially in flight where power efficiency is so important.
But that was not point of that idea. If you rotate them in circle it will just look like nomal propeller round movement.... Wierdness of his plane was non circular movement)
I could see it on a double hulled plane so that you only need one motor and don't have to run a second motor in the reverse direction. He does have to do something about the track flex in the straight sections.
Then you could just use a hollow shaft
🤣I haven't had that good a laugh in ages. The self-disassembling-propeller... prop-crop-duster?
At 3:45 - "stock" footage while holding a "pistol brace" killed me, hahahaha!!!!!! Very good one guys! This is what I love about this channel, the love for freedom and the 2A :)
Loved the flying box fan!
Suggestion: Extreeeeeeeeeeeeeeeeme aspect ratio wings with wingtip props. Like wings so wide you have to have steel wire supports
Maybe print the blades horizontally not vertically?
another idea: still print vertically, but with a modified stl file that has a hole in it to accommodate a 1mm carbon tube!
I recently saw a video, can’t remember who by, where he tested 3d printed bolt strength and printing them horizontally averaged nearly twice as strong across sheer, pull, and torque tests. Need to print with supports, but the extra strength is worth it in this case
Yeah, the bamboo labs are great, but alot of their standard profiles are very high speed and layer addhesion strength suffer as a result. But in general parts are usually much stronger horizontally as mentoned.
I'd like to see it go all out for flying box fan. Large center mounted prop with Lasko across it.
A revived Myth Buster's type show with this guy would be a big hit.
Peter Imahara
Yeah
I've always wanted to build a tank-tread paddle wheel drive for a watercraft. I imagine the blades dropping flat on the forward direction, then popping open when they enter the water. This could theoretically even work if the system was fully submerged. Idk if you've done boats, but very much enjoy your aircraft vids. Keep it up:)😊
How LONG a spring plane can you make?
Going back to the old simple stuff, fun airplane experiments. I love it!
I don't know about simple, maybe simple compared to some of the other crazy things Peter builds, lol
@@EJ-74 Yeah more like in the same way building a car is simple to a rocket scientist haha
Multi wing plane was actually quite interesting. I mean, it kept falling over with those wheels, but it looked super cool, and once it was in the air it looked both odd and awesome.
The fact that it was hovering and flying backwards was impressive.
1:39 Annoying mosquito mode activated😂
For the tank propeller, blade strength is affected by print layer orientation. Also, some kind of tensioner probably would help mitigate blade collision.
0:38 That's actually the proposed airliner design standard that was introduced after a couple of them flew into buildings and didn't bounce back.
Yes, especially the front spring seems to be a great safety feature. Maybe one can use ropes to align it with the axis when it's fully extended?
i get it 🤣
I’d love to see more refinement of the tank tread prop. Even if you made it a circle, to get more radially symmetrical thrust, I still think it’d be neat, to go around the outside of a fuselage
You just do it at the end of the fuselage and it's called boundary layer ingestion. It's great for efficiency.
edit: 2 large propeller blades will be most efficient.
Yeah, the opposite of the Stipa-Caproni! Not necessarily a good idea, but cool!
I think the biggest barrier is the lack of guides. The belts were constantly bending inwards between the gears, as is natural for a high speed belt without extreme tension. You can see the belt bending inward and the props hitting eachother at the tips, even at fairly low speed. Just putting a block of wood between the gears for the belts to slide over would likely fix the problem. Hollow out said block and put bearings on both sides so the belt can slide across with less friction, if you want to make it well.
@@AngryAlfonse I think the blade pitch is also an issue. Normal propellers 'twist' so that the forces all along the blade are even. The slower moving part near the hub takes a bigger bite of air, the faster moving part near the tip takes a smaller bite, but with the speed difference they're experiencing the same amount of force (on a good prop). With the tread system, to have the same even force all along the blade you'd need to somehow have every blade 'straight' on the flat portions and 'twisted' on the curved portions of the track.
@@AngryAlfonse Yeah this was my thoughts too. Needs to be tensioned (there was some noticeable slack on a few of those before he turned them on), and guides if tensioning isn't possible/isn't doing enough.
i used to love making paper planes, and trying to get my balloon and ornithopter designs to work. these silly ideas really wanna make me get into aircraft again :D
Nice to see the comedy...that multi wing had me literally lol
I think doing a tank tread propeller across the wings would be interesting (kinda like the idea of a lot of micro-propellers to get consistent thrust across the entire wing, but using a tank tread design instead). Maybe even having the propeller go inside the wing during the corners to try and prevent excess thrust at the wing tips (assuming that matters).
I second this. Need to do this to a bi-plane or annular wing. With two counter rotating tracks.
@@bp8652 lol it would be insanely hard
Actually, having that thrust at the wingtips can increase lift, if the prop blades are moving downwards at the wingtips: the vortex from the propwash neutralizes some of the tip vortex from the wing
Hey Peter! I think the tread props could be lighter if made with a single printed piece, but you need to print it horizontally so that the layer adhesion isn’t the breaking point.
Best Part: Nobody can enter the Cockpit
“don’t worry bro our car is safe from the mosquitoes”
the mosquitoes: 1:39
The tread propellor firing blades in all directions as it slowly sank made me genuinely laugh out loud!
Now put the tread propellor around the outside of the 20-stack wing - perfectly even thrust :)
the multi-wing was nuts. The climb ability and the land like a helicopter styles were sick as, not to mention the sick loop-de-loop
lol
It appears to me that the props are colliding with each other specifically where the relative angles change between the props (on the turns). I think either shorter props or larger gaps between them might help. But you probably already figured that out.
The last one was the best! XD
It was like watching a radiator or a radar flying sideways. Keep it up man!
The guide rail spring is actually a really good idea on small little models like this for nose down impacts
what if you put four multiwing planes together to make a wing box and put the props in the center to make a flying box. I think that would be funny lol
8:48 propeller: its 3:30pm
Much like you I've 3D printed plenty of parts just to see if they even work work or are somehow better. So for every one of your failures, know that I truly understand how you feel.
But when it just works, that's the best feeling ever
Love the flying window blinds. I'm also thinking that a longer fuselage might make it more stable. As for the track, it really needs to be on a wheel.
"window blinds." . . hm -then perhaps he could make a "louvre" wing, LOL
In all fairness, the original Phillips had a higher thrust line (though not good engineering). It folded one set of wings upward on its first test flight, did it not?
yeah my first thought was, "hang on why don't you put your fuselage actually through your center of lift"
exaggerate the tailwheel plane aspect basically, run the spar from the center of the blinds and tilt back the plane as much as necessary to get the back wheel to touch the ground on takeoff. if it's sitting at 45° so be it, get enough velocity to fly the tail and you'll take off fine
(my second thought was, ailerons, since roll seemed like a significant issue)
The screech when the "working" tank thread jams is straight out of a sci-fi movie :D
Peter, thanks for testing these ideas. I especially enjoyed the tracked blades. Have you ever tried flying a cyclogyro? I think there are three types: fixed AOA blades (similar to magnus effect?), tumbling blades (similar to voith schneider drives), and 'flapping' (the rotation of the blades reverses for a minority of time at the bottom of the cycle).
I love this channel. Every once in a while there is just a video of some crazy flying contraption and im here for it all.
Would be interesting to see a plane propelled by a track running the length of the fuselage with either scoops or flaps to propel it. Maybe the half of the tracks that moves noseward could go inside the body to reduce drag?
Always wanted to try that!
I think the issue with that idea is that only the most rearward scoop would be doing much.
@@robbhays8077staggered scoops
wouldn't work. the simple fact that you would be pushing air in both directions even if you hid half of it in the body.
you cant run the scoops though a force field vacuum.
YES but a water vehicle!!
An idea:
Do the multi wing plane and use the tank prip system with the oval going up and down. Since the multi wing plane doesn't need too much thrust then it would be interesting to see how it would work
It also makes it twice as weird
Circle plane wings, tank prop going on the outside of the wings. No hard turns, and multi winged weirdness.
12:05 is probably the closest thing we'll ever see to a flying boxfan! 😂
The multi-wing plane was really just a kite with propellers. :) Cool stuff.
That multi wing had too man wings. It was entertaining. I especially liked the way it flew so slow. Is there anyway you can do a "Slowest airplane we could build". Something like that would be really interesting also.
'Tis not a multi wing, it's flying window blinds!
Maybe make a tread multi wing AND spring plane combined
Now, all your happy crashes will have a bouncy feel to them!
0:43 They could have implemented this in 2001...
Xd
This was truly a LOT of fun! Thank you Peter and crew!
With the multi-wing plane it might be neat to see how varying the offsets from each other effects performance. Both either varying the height offset, or having each subsequent wing progressively further back. Also while we've only really seen WWI and pre-WWI style planes as bi-planes and tri-plans, it'd be interesting to see how different wing shapes, ie delta or trapezoidal wings, perform in multi-wing arrangement.
I think that are some interesting ideas, and it would also be nice to see the wind tunnel with smoke and all on the different configurations.
11:25 I laughed so hard!!!!😂😂😂😂😂😂😂
I wonder if anyone has ever added control surfaces to those paper loop gliders, imo that'd make an interesting build.
Peter did a giant circle plane at a Flite Fest a few years ago. Other planes flew through it! Look back about 6 or 7 years.
Love all the thought that goes into your builds! I really like the idea that someone mentioned about a flying saucer!
This was great on so many levels. You got mad skills, bro.
Tank thread propeller was pretty interesting, would really like seeing a bigger version of it spanning the whole wingspan of the plane and some bigger roller wheels so the velocity change is not as abrupt
2 of them for counter rotation
That's what I was thinking, take advantage of the change in form factor and have it cover a really wide area without being very tall.
@@user-do5zk6jh1k Was thinking the same thing, if there's two (one for each wing) you can even have tank-style steering for the plane too!
I'd like to see improvements made on the track plane. That was pretty awesome.
Same
It's nice to see you having fun 😃 and also the prototype that lost all the helixes on the field hahaha
Lol, the way the multiplane looked when it was flying! So funny looking
The prop is a cool idea, I think to execute it with any amount of success though you'd need it to vary its pitch on the straights to match the force being outputted by the ends... might even help with the blades flinging off
Man, this was insanely fun to watch! Your crazy experiments had me on the edge of my seat. Keep up the wild ideas, can't wait to see more wacky airplane stunts!
Honestly, your main issue with the tank track propeller is the tension. You need a chain guide because at speed the chain is bending which made the propellers collide which made them break or the chain snap.
All of those airplanes would for perfectly in that old cartoon - "Stop the pigeon" 😂
That being said, it's insanely cool to see such airplanes in real life.
I think you’ll see more success with the track propeller if you place track sliders (supports) between the drive wheels on the top and bottom. This way the track won’t be able to dive as it leaves the wheels (which seems causing the propeller tip collisions). Whether the propellers are rigid/strong enough to withstand the tip deacceleration remains to be seen 🔎
Probably my favourite videos of yours of recent times, just hilarious. I especially loved how even though the tread props were clearly so sketchy with blades shooting off left and right, once you were outdoors safety glasses were optional 😂
The multiwing plane could be a really interesting drone design. It sort of floats slowly using four props spaced above a wing array. Could be more efficient for loitering, just need the right software to keep it steady.
I've noticed you've been making lots of symmetrical airplanes. I'd like to see a plane which is only winged on one side.
03:40
@ATF - he officially acknowledged it as a Stock!
Love seeing old plane ideas tested and improved! So wild!
"Boing 787" was so good 😂
doggie with propeller tutu was the best thing I've seen this week
Love it! Would be great to see more crazy-ass ideas from the pre-flight era, made from strong/light materials available today.
12:44 when you add so many wings you become a helicopter
Would be awesome to see a "bladeless" propellor plane, like the dyson bladeless fan/heaters.
Bladeless fans have blades, it's just a marketing thing
me: mom can we have a vtol
mom: no we already have one
the vtol at home(the third plane):
Respect for your perseverance and patience Peter, I think you should build a Coléoptèr, it was a French prototype tail sitter vtol, as far as I know nobody has made an RC replica yet, but it would be really far out. also I think we definitely need an ekranoplan revisit, maybe one of those wacky mega GEV's the soviets wanted to launch spacecraft from.
keep making the inspiring videos.
Great vid as always!
I think the tank propeller can use some inner guides to dampen the violent inner turning on the edges as the blades seems to hit eachother a lot around where the round elements end.
The stacked plane is simply amazing, do you think you can make one that has a fuelselage that looks like a sailed ship? I can totally see the stack acting like some eco-punk flying sail for something like that.
it seems more like an helicopter than a plane
The ship idea even seems plausible
Yea, the tank propeller definitely needs runners or bogey wheels to keep the tracks straight between the wheels. Like you said, the blades kept contacting, and I’m certain that’s the main reason they kept failing and breaking.
It’s a really funky concept; I think a quad engine plane with the tank propellers linking the two engines on each side would look awesome.
I agree the 20 stack was amazing. I didn't see the flight characteristics coming and they caught me off guard. I like it.
I love how one of the answers to the tank tread propellers was to make it more circular
Awwwsome dude. You've inspired me to get into engineering
That multiple winged plane is a must do on a bigger scale! That was amazing to see it actually functioning like a helicopter basically but still crazy controller. Honestly maybe a rework of the design so it's not as wobbly on take off lol😂 but excellent job! Surpassed my hypothesis on it so I'd love to see more! I see this being a really fun one to fly around especially after a little rework of the design it's gonna be kinda next level!😂
That was really cool... it almost seemed to act like a VTOL! All those wings were a lot of drag, but the stall speed was really low.
@@marasmusine right exactly thats why I'm kinda curious an excited to see them try to rework some of the design an get it's just a but more stable maybe even put a dummy on it that scales from about roughly 150 to 200 pounds person. Cause ot almost seemed to need something riding on it to help with the weight distribution
That was so much fun. More please!
I'd like to see a long caterpillar plane with 6 or more flapping wings.
For 3D printed props, adding a channel for some strong thread and CA allows you to print vertically (the nice way) and then add the needed strength. A bit more sanding needed, but it can work well.
Just going to say here that I bought the “Float Around, Find Out” merch and it is awesome!!! Your intern has mad artistic talent!! Keep up the awesome content… Oh, and back to the BOAT!
What I enjoy most is you appear to have a complete lack of fear about failures!
that multi wing was hilarious!
yaw control? not here I'm afraid..
you wanna go which way..? meh.. I'll think about it and get back to ya.. later.. lol
I think the main 2 issues you’re running into with the track props is 1. You have collision between your propellors, because your track isn’t guided enough. You could create a sort of moat on the inside of the track to guide it better. 2. Your propellors keep breaking off due to the centrifugal forces, you you might want to machine them in something stronger, like a light metal to make this work better, and machine them all in 1 piece with each tread link for less chance of parts just falling apart.
I wonder if printing them on their sides would help. I noticed the printing was done so the layers were not aligned with the direction of the force. This probably makes the surface smoother, but weaker
needs chain tensioner
I always wondered if multiple wings would allow slower speeds in a shorter wingspan.
Awesome to see it up and flying! I am Stunned! 🤓
You need considerable space between wings to get efficient lift. Too much turbulence. One quadriplane in WWI, but triplanes seemed to be the reasonable limit. Some special use biplanes still exist. Check out Staggerwing and Griffon Lionheart for true beauty.
The Sopwith Triplane was designed to overcome the poor visibility of its predecessor, the Sopwith Pup, by reducing the chord (front to back dimensions) of the wings while maintaining the same lift, and it worked out. I believe the same would hold true for wingspan. You’d get less efficient gliding, but faster roll rate.
IIRC, the minimum space between wings for efficient lift is the same as the chord (measurement from front to back) of the wings (or, if the wings you’re spacing don’t have the same chord, then the spacing is the average of the two chords). Also, IIRC, staggering the wings lowers the required spacing distance; not sure what the formula for that was, though.
11:31 that laugh: I am evil genius, its fly!
Absolutely loved this! You're so resourceful and have such crazy reflexes.
Going for a shirt, but the payment system is not working. Take my money!
Patreon squad might be a little early 😂 should be live soon!
How was that comment 4 hours ago?
@@kanyemiddleastyea how
wtf@@kanyemiddleast
@@kanyemiddleastvideo is probably released early for patrons or members
Tank tread is super cool. I was thinking a guide rail under the track right after the wheels might stop the rotational momentum. I'm not sure if it would alleviate the stress at the base of the blades or cause more. The blades wouldn't hit at least. Thanks for sharing and I love the shirts!
You, sir, are insane. And that's my greatest compliment.
That flying radiator was hilarious 😂
I think that the blades on the tank track propellers keep falling off due to crashing into each other. On the straight portions only a small amount of give is needed to make them collide. A simple fix would be to just make them better spaced out. Though making it stronger works too. Either way its kind of a doomed concept from the start but fun to watch it work!
Yep, or maybe give it a chain guide? Perhaps a slightly bent one so there is not a straight section but they whole thing is more like an ellipse.
What I saw looked like too much flex in the track. Some guide and tensioner wheels should help with that issue.
I want to see how you cound push the tread-prop idea with optimization for different fuselage cross-sections. Could you integrate an ellipsoidal prop-track into the surface of the fuselage or a nacelle?