Wind Powered Car (3D Printed)
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- เผยแพร่เมื่อ 29 มิ.ย. 2021
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3D Models
Propeller Sail Car:www.thingiverse.com/thing:489...
@SteveMould : • Sailing Faster Than Th...
@veritasium : • Risking My Life To Set...
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#veritasium #car #3dprinting - วิทยาศาสตร์และเทคโนโลยี
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The first 100 people to go to www.blinkist.com/integza are going to get unlimited access for 1 week to try it out. You'll also get 25% off if you want the full membership.
Hello
@@blackvalley9255 dont spam ask, it's not nice.
@@blackvalley9255 You have to leave him a suggestion for a video dude, damn.. AND it has to be the most liked idea...
@@GRDL. ok:(
please give me a 3d printer idea for the next video is make a shadow graph mirror
I thought "relative speed" was your cousin who drives too fast
Nice one 😂
only of your last name is 'Racer' or 'Gonzales'.
*gasps in anime*
@@Weisz behold, cring.
@@Weisz unexist weeb
This was an excellent miniature rendition of the full scale. Love that you're pumping out quality content, Tomato Lord
Thank you Jay 😁
@@integza The problem is a ship can travel faster than the wind? And the answer is YES !!. if you can convert high torque but LOW velocity from the propeller to low torque and HIGH velocity of the wheels.... The Veritasium ship can do it..... Free energy, the answer is NO.... Nevertheless I love your videos Integza
@@Pedritox0953 but ships (under sail) also have a maximum speed (hull length at waterline)
@@tonyoliver4920 the Veritasium ship is not in the sea, it's in the earth... If you look the wheels, they are very tiny, that's because of the friction... high friction less torque and less velocity... The Veritasium ship doesn't convert high torque, but has HIGH velocity
@@Pedritox0953 ah, I wasn’t aware of that!
Thank you 😊
I was going to make a comment about integza’s build in the video being improved by skinnier smaller wheels. There’s also a website you can plug in details and it spits out an optimised blade design (it’s for making wind turbines)
Also I’ll assume links are off for spam
Sorry plasma! For hijacking your post!
Longtime follower
14:56
I can hear ElectroBoom screaming "THERE IS NO FREE ENERGY!"
This is amazing and simple. Is it free energy? Can it be set up to gain energy?
@wobblyboost you're not understanding the laws of thermo-dynamics, even if it's "free as in free beers", it takes energy to generate beer, and that energy can't generate "more energy", you can only lose energy in the process even if it's only a tiny amount. But it's youtube and clickbait is what makes more clicks/$$$ so it's a bit disapointing to see Integza follow that "unmentioned rule of youtube" as his content was already interesting enough to generate clicks.
@wobblyboost That's the best you got ? Sounds weak even for an uncultured swine :')
@wobblyboost It's nice that you've figured what you need in order to get fixed, according to what's on your youtube page :) I don't see why you call yourself a kid tho.
@@LawnMo energy *Reclamation*
The reason your car got a 1:1 rotation between the propeller and the wheels is because your gears at the front were a different ratio. This is also why you had some issues with the first propeller not moving very much. If you do a 3:1 ratio or something it might move easier with the first propeller
Integza: I can explain it better than you
Veritasium: * 4 hours later * here's another video explaining it better
Bwahaahahahahahah
Funnily enough, this video is still better. How pitch and a propeller works are both better explained.
@@Klarinet2011 Certainly useful explanation. That said, better engineering by Xyla Foxlin, and with some last minute adjustments, they made it work.
Yeah I still don’t get it even after watching Derek, Xyla, and Integza. I liked this video a lot but it never demonstrated the car moving faster than the wind and what the upper limit would be. However it also taught me not to buy a 3D printer lest I become an addict, so thanks for that ;) Clearly it involves sails so I need a pirate hat and rum and paper and pencil!
@@Archpimp because there is a difference in speed between the air and the ground, there is potential energy.
That energy can be captured and used if you are standing still, that energy can be used if you are moving. That energy differential has nothing to do with your speed relative to the air or the ground.
If you make a small enough, efficient eniugh system, and you capture enough of the energy, you can divert enough power from the differential in the wind and ground to move a craft.
Speed doesn't matter. And thus, if your system is efficient enough and your collection large enough, you can move through the air at a higher speed
The point of using the treadmill is that you don't need wind to test the theory. So when you added the ventilator you added additional thrust that shouldn't be there.
I was hoping someone pointed this out. Putting a regular sail car on a treadmill with a fan will get it going faster than the treadmill!
Yeah... As soon as he pulled out the fan I facepalmed. This doesn't help the debate, just invalidates his experiment.
This is false, because in the last blade pair test, he used only the treadmill, which it still was able to go faster than the treadmill itself. He did three different tests; Just the treadmill, the treadmill and the fan, and just the fan. Different blades with different pitches will have varying levels of success.
The first one failed with just the treadmill, so he added the fan, and it still failed. The second one failed with just the treadmill, and succeeded with the fan added in. The last one succeeded with only the treadmill, so adding in the fan was more or less for fun. Not only that, but the last one succeeded with just the fan as well.
@@MeloniusFelonius He had the fan still on in the last test that succeeded. Also of course it will work when only the fan is on. The question is if the car is moving faster than the wind generated by the ventilator. He didn't test that and I doubt it did.
@@MeloniusFelonius what is the point in using treadmill... using treadmill is like adding an external motor to the sail car in an indirect way
you have to give this man respect for putting on a full fit everytime he films
Cringe
@@bigsteve6729 ?
Plot twist: He only puts on the top because you cant see the rest 🤔
Duck tuna
@@r.vishal9750 what?
I understood the explanation about halfway through because i knew dereks explanation, and thenwhen you finished the whole wind exanation i finally realised that the wind can push the vehicle up to windspeed and then the ground is moving backwards at windspeed relative to the car, allowing you to exploit thatby using gear ratios for minimal drag. Dereks old explanation, new explanation, and integza's explanation all came together for an intuitive explanation in my mind.
скопируй и поставь в поиск ютуб
copy and paste in youtube search: Building the Vehicle Physicists Called Impossible (feat. Veritasium)
Here after Derek's video about the bet. Maybe you can add some thoughts on this debate, especially considering he also made a 3D model available from his testing.
same
I got the notifications for both videos. Unfortunately, Derek's was first. Haha! Integza missed a 10k bet...
I think so far Derek's simple cart with big wheel on top and smaller ones at the bottom best illustrated how a vehicle can go faster than the medium pushing it. The wind adds extra complexity in that the coupling with that medium using the propeller is not as simple as in the cart example, but the basic concept is the same.
@@MisterkeTube yeah, I agree. The three-wheeled cart illustration is what allowed me to finally comprehend what was going on
@@MisterkeTube The funny thing is we all probably would have played with or built a similar setup , especially if a person was into LEGO. Just how that principle is applied for the wind car is extremely clever.
The most scientific way, that I know, of calling someone fat is telling them "Time goes slower when I'm near you", because of relativity.
Bro you just gave me:
1. A new roast.
2. A new Yo Mama joke.
(Yo mama so fat, then when anything's around her time freezes.)
@@thatguynamedgeorge9218 put another way - You have to keep NASA apprised of your location because your mass screws up geosynchronous orbiting satellites
I told my friend I figured out why he is always late. Because his watch runs at a slower speed when he is wearing it.
@@timellis9293 XD
I love it when the TH-camrs I watch watch the TH-camrs I watch, hearing about it always just gives me a little spark of joy.
I've been watching the other vids on this topic and yours did indeed clear up a lot of my confusion on how the propeller, wheels and tailwind make this thing go down the road. What made it click for me was understanding that the propeller was acting as a sail as well as a propeller. Thanks.
"3d modeling is boring"
I am literally listening to the Integza video while 3d modeling
Haha same
Same
Same, what are you guys modelling ?
Yep. Same here. It's my job.
I am actually doing PBR on assets for game. Yay!
@@Balancatraca Legs attached to a treadmill. A robot born to suffer haha
video idea: design and print vehicle (thats fly or just drives on the ground) which will be powered by one of yours jet engines, i'll be pleased to see that.
Tomatoes are disgusting!
Yeah let's just stick a propane tank and oxygen tank to a weak 3D printed plane body
It is possible but integza said he's not good at welding, and it's impossible to do that with a plastic body
Maybe collab with someone experienced with metal
That'd be cool
@@random-b-i2480 yea, mixing 3D printed body with some metal parts will be super cool too
I don’t think he has enough thrust yet, especially for something that would fly
@@issaxnewtie2431 if that's the case we need:
1-a decently big plane with big wing to make enough lift that's able to lift the (kinda) heavy body
2-very very efficient structure that uses the least amount of materials
3-the engines integza made doesn't make a lot of thrust
He needs to make much bigger engines which is a pain in the ass
4-I've seen people using carbon fiber as the body of the whole plane but idk it's something very hard to shape
@@random-b-i2480 I think you could probably make much smaller tanks for the fuel at the sacrifice of run time
Dude. I love every video you make. So entertaining! Thank you.
You have to use lubrication in gear system to lower down friction and make propeller rough to make them faster
Its fun knowing that the reason this channel exist because of another TH-camrs,can't wait for more chain reaction
@@Name-js5uq yes it does
Iv been thinking of making videos due to integza and several other 3d printing channels. The chain shall be eternal!
@@Name-js5uq I think this is what @. meant: 15:38
The chain will continue :)
@@cosmicrider5898 *Make 'em!* You may get only a handful of views, like me. But you'll have a great time making them! And if you're going to do the thing anyway, might as well film it!
I just subbed to see what you come up with - have a look at my channel first to see what people _don't_ watch, LMAO!
If you post, I'll watch it. Least I could do for another "Rider"
I'm more curious about the fact that every science youtuber has a treadmill in their house.
Or knows someone they can borrow one from.
its great for your body
Haha this is so true
That sounds more like psychology than physics.
@@sawzalljr3621 Well, perhaps it was recommended by their … physician.
I’m sure you tried your best, but by adding the fan you broke the experiment. The whole point of using a treadmill is to move the ground instead of the air, so if the car moves in the opposite direction of the treadmill it moves faster than the wind, since the air is stationary. By adding the fan, you had to make sure that the car moved faster than the wind of the fan. Unfortunately it clearly didn’t move faster than the wind of the fan. You can see this because the string attached to the frame went forward instead of backwards. So unfortunately the was too much friction in the gears or the propellor wasn’t optimal.
I agree, it's all in looking at the tail-tell on the car
“As long as there is no ridiculous amount of friction”.
His words as he is showing the car with the fan… He is speaking to his more enlightened viewers. The ones who understand what he is getting at. For some reason you didn’t catch the not at all subtle explanation that his design OBVIOUSLY has a TON of friction because DUB just look at it! I don’t even think he uses metal on metal bushings let alone bearings, getting the gear ratios correct, getting the blade profile perfect…
He doesn’t have to do those things because 2 people have already done it and as a pre-requisite for you commenting on this video you had to have watched the other video that try’s to explain how this car works that DOES have a working scale model on a treadmill.
So he isn’t responsible for making a working scale model…
He said he is just trying to explain it differently.
Because even though for me the first time I watched the first guy explain it I was like oh shit duh… why don’t people understand that theoretically this makes perfect sense and someone has already shown it working at scale and in reality.
This guy doesn’t need to show it working again…
I have a video idea: so tomatoes actually have a chemical in them called solanine which in high enough quantities can actually kill a human but only really high. I think a video of you doing some chemistry and trying to extract that chemical out of your arch nemesis tomatoes would be really interesting and entertaining!
hes an engineer not a chemist
As much as I’d like to see something like that the statement above is true. So probably wont be happening, at least anytime soon.
ask nilered
Too much water can kill a human
After some quik research i found out, that extracting Thierse from around 50-80 unripe tomatoes should be enough to be lethal
VIDEO IDEA SUBMISSION; "Stuff Made Here" just made a video where he showcases every tool he has in his shop by building catapults with each one. One of his catapults was 3d printed and was kinda lack luster. He's also not one to shy from a good competition...
Careful keylay. Or hes going to start making locks aswell xD
Things that go pew pew are always good.
the timing of this video is like u have insider info
If done right, you can accelerate the car on a treadmill with no fan or wind at all. Just the wind produced by the propeller can be enough to make the car go faster than the treadmill is spinning
The way i understand it is that you have 3 points of reference: Wind, ground, vehicle. Drag (wind-vehicle) will accelerate the vehicle against the ground. In turning the wheels and turning the propeller you put additional air in between the vehicle and the wind, adding more momentum. So it's basically like an afterburner. Like an additional cushion you propel yourself against from. It's not a vacuum after all.
Wind(W), displaced air (A), Propeller (P)
W==> P
Max speed is reached when W => P,V
Video Idea:Please make a linear airflow chamber and test an airfoil for maximum optimisation. I think till now nobody has created a small airflow chamber, Petersripol tried but failed at last. I am a mechanical engineering student and a 3d printer will be very helpful to me.
I don't think it so much "breaks" the laws of physics as it deftly exploits them. ;)
Agreed.
"Deftly"
+1
Deftly breaks the minds of people who struggle with physics.
loopholes my man
Yeah it (deftly them)
I watched both of Veritasium's videos on this, as well as Steve Mould's, and I still couldn't wrap my brain around the effect. In this video though, YOU finally broke it down in a way that something clicked and I now can understand what's going on.
The propeller is BACKWARDS; the wind would normally spin it in it's natural direction, but the prop is mechanically geared/attached to the wheels in this backward orientation. When the wind blows, rather than working to spin the prop, it instead just PUSHES the whole vehicle contraption forward (just like any object in the wind would move forward, as long as friction is forgiving enough).
As the wind pushes, the car is rolling forward and the wheels are turning, which then spins the prop in the BACKWARDS orientation. Because the prop is spinning backwards, it continues to act as an efficient sail, and the wind keeps pushing the car forward until vehicle speed matches air speed (minus friction?).
However, because of the special propeller shape, with enough speed, the prop eventually ALSO starts doing ITS job, of making a high and low pressure pocket. Because it's now spinning, while the whole car is also still being pushed forward by the wind, we now have two methods of thrust rather than one, overcoming the speed of just the wind sail on it's own.
As long as the vehicle is designed in such a way that friction is low and propeller thrust is high, the outcome is an acceleration vector in the direction of the wind, larger than that of the wind itself. I think I get it!! 😊 In my opinion, Integza, you've won this one!
The only thing I will say that Veritasium did do better was the model car. He continued to work on the design (with the help of a friend) to eventually get the car to a point where it CAN drive faster than the treadmill, without the need for a fan as additional force. Because you used a fan AND a powered treadmill, that's definitely cheating and does not actually demonstrate or prove the point you're trying to make, so the example is a little lost/nullified... That's okay though! Your easy-to-understand explaination made up for it 😊😊 Thanks for your fantastic and educational videos, Integza! ♥
it seems to me that it would make more sense and perhaps be safer to put the prop on the front side of the vehicle. And instead of one large prop. put one on each side of the front of the vehicle. and put a pivot on them that would allow the prop to rotate to be perpendicular to the wind from whatever direction it is coming from. I would also try with a 3 or even 4 blade prop.. or perhaps even use a prop that spins perpendicular to the ground.. which has the ability to catch wind from any direction (360 degrees). When i get my 3d printer i might make one and put video of my design on youtube.
@@manp1039 That would be awesome! I would love to see it.
In the case of thin airfoils (sailboat, hang glider), the air flows the same distance over and under the airfoil. The flow under an air foil is essentially pushed down, and the air flow over an airfoil tends to follow a convex shape (up to a point, if the speed and/or curvature of flow is too much, vortices form, reducing lift and increasing drag), due to viscosity and to avoid creating what would otherwise be a void, reducing pressure. Faster air flow coexists with the lower pressure just above the upper surface of a wing, and slower air flow with the higher pressure just below a wind.
As for DDWFTTW carts, a propeller is used because it is efficient, not because of its resemblance to a tacking sail. For example, consider a model river boat driven by a paddle wheel. The paddle wheel is driven by two spools being turned by wires being unwound from the spools by being pulled backwards, geared so that the wires move much faster than the paddle wheel. If the wires were attached to two posts in a stream, the boat would move downstream faster than the stream, with nothing resembling the tacking aspect of a sail. The key factor for the boat and DDWFTTW carts is an effective reduction in gearing, so that a higher speed, lower force is geared down to result in a lower speed, higher force. For example, assume there is a 10 mph wind, and a DDWFTTW cart moving downwind at 15 mph. From the cart's frame of reference, the ground is moving at -15 mph, and the air is moving at -5 mph, 3 times as slow as the ground. This would allow the speed from the ground to be divided by 3 and the force from the ground multiplied by 3 before losses are taken into account. Perhaps after losses, the force is multiplied by 1.5, which is still enough to cause the cart to accelerate faster. For your model, its most likely that the pitch of the propeller is too large. With a smaller pitch and larger diameter propeller, the speed of the thrust is reduced, but the force of the thrust is increased. That was the issue with Xyla Foxlin's model (too much pitch, reducing pitch and increasing propeller diameter solved the problem).
This did help me understand it better than Veritasium! Thanks!
I'm sorry, but Derek uploaded around the same time and he explained it better. ;D
For the video idea: You've already built a Stirling engine and we know that it turns a difference in heat into rotational energy. From what I heard, this process is reversible. So add a motor to the Stirling engine and see if you can improve the design to create a heat pump and generate a noticeable heat difference. Bonus points if it can actually be used to cool something.
When one of these vehicles is working right, it will actually travel straight into the wind, as seen in several other videos. That would be a much more impressive thing to show.
Love your videos!!! So informative and such a fun entertaining watch!!!!
Where do I send these 100's of old quadcopter propellers, carbon tubes, and servos to support the channel, Teg?
Send me an email to integza@gmail.com
@@integza I wish I had an entire Hobby Shop to help sponsor your videos, but I do have some gear that I'd like you to have. A servo tester can inject PWM, 1000-2000us, so you can let Integzabot chill for a bit, and a little less Arduino action for your jet throttles. And a metric ton of propellers and brushless motors. When I wreck a quadcopter, I may damage a motor; rather than replace just one, many times I've replaced all four, leaving 3 perfectly-good, badass motors we can use for... activities? Some simple on/off rocker switches, LED strips, doodads...
@@GhostRyderFPV ok
How about if the gear ratio of the prop to the wheels were higher? Wouldn't that allow it move with less wind?
If you have rc transmitter and receiver which you don't need anymore I will be more than happy to receive them
Great work as always. I would like to see your take on sugar rockets. Maybe incorporate some of your nozzle designs to see the max thrust that could be achieved from a sugar rocket.
I think the clearest explanation of how the car works is Veritasium's animation of the sailboat traveling on the cylindrical world, but I enjoyed your video for the slow motion run into the tomato.
Hey Integza, I bet you £10k that you're wro... nah actually, you're good.
Lol, that video was good. Kudos to the prof for admitting defeat though
@@halsoy he admitted defeat, but he still claims he was mostly right and we are mostly wrong. Which is, as we scientists say, bullshit.
Bottom line - the point is the fact that the propellor connected to the wheels. The wind will take the car close to wind speed - then the prop basically do the addition - you can say trigo or you can say branuli.
Now Im curious to make mathematical expression to calculate the equalibriume of the system and to extract the max velocity... If you have this I will agree that you got it.
Always looking forward to the next video.
I'm enjoying this whole serie of videos about that car hehe great!!!
Add one more thing: fixed propeller has drag almost equal to drag of propeller's projection, but spinning propeller has drag equal to 8/10 of a circle it spins in. That is how autogyros works - those flying machines has angled propeller that acts like a huge round perforated wing when spinning. And it also has airfoil in addition to that.
Create a rocket powered autogyro with 10 small rockets lighted one after another.
Veritasium just did a $10K bet on this exact subject, you guys need to see it
and for the people wondering how it can accelerate more and more on the treadmill, yes its possible but the energy comes from the treadmill motor itself. the propeller connected to the wheels causes the wheels to require a higher force to spin which slows the treadmill down but the treadmill motor counteracts this slowdown. so the energy in that case comes from the treadmill motor! cool right?
Great video! I do quibble with the fan behind your treadmill. Your cart may work, but the fan removes your ability to show that it is actually moving faster than the air relative to the belt.
I just built a lil teeny one yesterday that runs in a circle for hours (just uploaded a video).
02:05 He is role-playing napoleon killin a Russian tomato
I would love to see your try on ram jet !! they are clearly under rated 🚀🔥
Great idea but how do you propose he could get it going fast enough to ignite?
That’s the problem with ram jet research. Those things really need to be going at least 150m/s (~330mph).
@@q.e.d.9112 with an other jet engine
This was an excellent explanation.
Thank you.
Always love your hilarious presentation!
Video idea: make a 3D printed Ekranoplan.
Petersripol made one last year I think
Are you russian 😁
@@Autotech5 no🙂
Have you ever experimented with the Magnus effect?
For those that are unsure of what this is, here is a simple demonstration:
1: Take the insides out of a Bic ball point pen (the kind that is just a straight, un-tapered cylinder works best)
2: Place the cylinder on the edge of a surface that is off the ground.
3: Place 3 fingers from each hand on the cylinder slightly closer to you than the center of the cylinder.
4: Push down with your fingers evenly until the cylinder "pops" free from your fingers.
This should create backspin on the cylinder and forward momentum which, if done right, will cause the cylinder to lift or float as it moves forward.
How can you be so creative and at the same time have respect for a televangelist like Peterson.
Because he is smart, and Peterson is smart. And smart people like to listen to other smart people.
Excellent job explaining this concept!
Theres one experiment I've wanted to do for years. Pneumatically spinning a low temp liquid metal, and then running current through it. Inside of a glass container would be ideal, and my thought is using gallium or mercury. I just want to see what a magnetic field vortex might look like. Please, not even for the printer I really just want someone to do this.
I'm fairly certain I seen someone make mercury spin with magnetically induced current on youtube.
Cody's lab makes mercury motors all the time.
mercury is harmful and gallium is furiously expensive (and these are the only options of fluid metals in low temperatures)
@@wojciechsosna9230 Mercury is practically harmless unless it makes contact with an open wound. If you wear gloves it's safer than many chemicals that are used in chemistry. It can't even get into our bloodstream through mucous membranes like other chemicals because the surface tension is so high.
Here's an idea, because low temp is fairly relative, research some other metals that have lower temperatures. 2 other points of relevant data would be their conductivity and magnetism. Some other things to check out, glass temperature and what kind of motion will elevate the viscosity, if magnetism can influence viscosity, or electricity. Glass temperature is the point where a material becomes a gel like consistency. Actual glass can take some fairly high heat before deforming.
Attach the Dremel to your 3d printer and make it into a cnc. That's my idea
No, attach this to the 3d printer and just tape the dremel to the side somewhere.
www.dremel.com/au/en/p/dremel-flexible-shaft-225-v223
I like that. I will never win the 3d printer...
@@benfubbs2432 that's exactly what im doing for a project, in order to mill my own pcb's!
@@BigBoyDuckie Have you had any luck with it yet?
@@benfubbs2432 yeah that's a good idea too
You're a genius!!
Love this!
just as expected integza would make a vid with this topic
Treadmill + fan is invalid configuration for testing this - it makes the wind speed be relative to the vehicle, not the ground it is supposed to. It effectively adds speed of the treadmill to the speed of wind
It's force x distance of the rotor vs. force x distance of the wheels minus various efficiency losses. The issue is the conversion of a rotational distance to a linear one and any mechanical advantage that could be used to convert applied force into additional distance on the output end. It should go faster until the force needed to have the cart move forward via the wheels is less than the force available to the turning rotor. Add in the time factor and it's power-in minus losses equals power-out.
The propeler on the sail car is not connected to the wheels, the belts coming down from the propeler are for pitch control alone.
It's definitely connected, if it was freely spinning, the wind would turn it the other way.
It is connected, watch veritasiums video
@@pocarski isn't the rotation determined by which side they the thicker part of the wing is? As in...blow in a computer fan and see which way it spins...
@@iulianlazar8893 It's mostly determined by blade pitch. The sail car's propeller is rotating in a way that would push air backwards, which doesn't make sense if it's being spun by air coming from behind.
Look at it as a matter of energy,
Putting aside wind speed, it's pushing with a force, with bigger propellers, car gathers more force, and with propellers configuration set to resist the wind, the extra power translates to more speed
Like a pulley transferring power to speed.
Wow, you explanation is way better than the original video and the model is great. I just finished printing my own. Thanks
video idea: make a CVT transmission and test with your engines and use to make vehicles or maybe throw a tomato on it while running >:)
Oh gosh I would love to see homemade CVTs so much!!
Did Integza know Veritasium was about to post an update to day?
Yes, because he commented on the video.
But take a few days to make a video like this.... its more just bad luck and coincidence that Veritasium posted a lot better video 1 day after this one.
@@brianfhunter I’m not sure we understand each other.
Great job explaining this topic!
For a future video, how about building a rocket that instead of having a parachute to bring it back down gently, a foldable propeller pops out and uses autorotation to slow down its fall? Your mention of Derek’s video about gyroscopic precession got me thinking about the fascinating physics behind helicopter flight.
Estes makes this as a kit already it's been around forever
@@DandSCreations They make a model rocket that uses a propellor instead of a parachute to land? I’d like to see this but I can find it. I’m probably not using the right words when searching.
Excellent video as always!
Regarding the wing shape, the wind on the top is not accelerated but keeps the same speed, it’s the shape of the wing that creates a low pressure area when the molecules want to travel in a direct line. Bernoulli principle doesn’t really apply here. Otherwise any shape of wings with the top longer than the bottom would work
luckily he uploaded a new video about it 5 hours after you lmao
video idea: use large bottles and fill them with air, make a variable nozzle, attach it to the rotary engine car, and yeah my idea is to build a long lasting rc car
Tom Stanton made some videos doing this, even attempted to make a plane.
@@rdizzy1 he wrote long lasting, tom stanton made rc planes that would only last only a few seconds, his idea is to make it last longer
Just drop some dry ice in Tom's design?
@@Specter0420 lmao that works too
@@bon2183 There is a video floating around on youtube of some students that made a small human sized car that ran on tanks of pressurized air.
You provided s much better description you included airfoil mechanic which I found fault with the other video explanations great job
You should watch Xyla Foxlin's video on her channel! She was the builder for the model in Veritasium's video.
What you missed is the diameter of the wheel! The ratio needs to be about 4.5-5:1 propeller diameter to wheel diameter.
So basically, just put bigger wheels on it and it won't need the fan to help it!
Video idea for you: Try 3d printing a steam turbine. Not the boiler obviously, but a tesla turbine or normal turbine would be cool :)
He has made a tesla turbine video
@@emilsmadvlogs5879 Yeah but not using actual steam. I wonder if 3d prints hold up to the heat and pressure.
video idea: build a rocket engine that is powered by hydrogen and oxygen. and then make an electrolysing machine to make hydrogen and oxygen.
another idea: make a rotary mill from 3d printed parts and items from the hobby store (this can be used to machine rocket parts and a rocket nozzle from graphite for example)
We built a propeller to power a small pump in class because we were being taught about wind energy and windmills. My friends and I decided to 3d print a propeller with a semi-optimized profile. On our first test the propeller worked too well. It was so fast it moved the gears in the gearbox which disconnected it from the pump and made it spin freely. One of out propeller blades got launched into the ceiling and another almost hit one of out classmate. To be fair, it was initially designed to power a two chamber pump which we had to switch to a one chamber pump because of issues with connecting two pistons to one windmill and a lack of time to fix said issues. In the end, we swapped out the gears, better secured the windmill in place and it worked perfectly. Lucky for us the two blades weren't damaged too badly and we were able to reattach them with a bit of glue.
You should power a vehicle with your 3D printed jet engines. I love 🍅.
Your content is truly great man. I look forward to watching and learning.
Video idea: put rocket engines on the “laws of physics breaking car” and see how fast it goes or Mach a new care with the same concept as this one but with rockets instead of wind
big fan of rockets eh?
@@CTMKD ...or a big fan of Integza...which makes one big a fan of rocket engines.
@@klausstock8020 yeah that checks out too
For the video you should make a vehicle that holds your jet engines
"The Dark Arts of Trigonometry!"
Me: "Dark Arts is putting it kindly."
Also I want to add my thoughts. Even a Sail boat that is Tacking in the wind at the optimal angle has an absolute limit beyond the speed of the wind. For the very same conclusion you came to. The low pressure in front of the sail pulling it faster than the wind behind the same sail eventually equalizes because of the on coming air pressure.
You could do this same experiment on water by replacing the Sail with a big wind blade that's tied to a Prop under water(if you didn't couple it to an under water prop the Wind blade would just pin wheel).
But at the optimal angle it won’t be going directly down wind it’s going partly sideways. so it can be going much faster then the wind would be able to still propel the boat even when it’s going faster then the wind
i think a sail boat goes faster than the wind into the wind, because the sailor adjusts the sail to be in the shape of an aerofoil and the created lift pulls the boat forward
"We only do punk rock science here"
Best motto ever! Also, if you make that into a sticker, I'll definitely buy!
What about building a "Compressed air cannon" which can be used to kill "Tomato Lord jr" by using his fellow tomato army or other materials .
Ye
Great channel,very funny, just subscribed. I've noticed many physics channels (and most people commenting) do not understand mechanical engineering.
You nailed this one! I saw the video of the car and didn't get it but you illustrated it perfectly for a tomato brain like mine to understand. Thanks your the best!
Video idea: You need to build a vehicle that launches tomatoes backward for thrust!
Also you could use crushed tomatoes as fuel, In an oxygen environment tomatoes should burn nicely
Talk about a V8 engine
@@SpringyErmine ha yeah that's perfect
Also I think the important thing that make the car in this video work is there are two things moving at different speeds ie air and ground. the cart can basically use leverage to go faster than the difference of the two.
Once again asking Joel to make a propane-powered sonic cannon to explode tomatoes
0:53 "Sounds like Mikey takin a leak."
The varitasium video showed treadmill working with no wind. Your video is adding energy to the system to prove point. I love the prototype, it just looks like there is too much drag and friction in the system to be a working example.
integza 3d printed exoskeleton when ? ;) we really wanna test the limits of a 3d printer
Video idea: Gyroscopically Stabilized Tomato
Yes
Why would you want to stabilise a disgusting tomato? I want a tomato DEstabiliser.
In a tornado, a fire tornado
He wont, I know he wont
The air pocket is like a cvt transmission because as speed increases there’s more and more of an air pocket for the wind to push on
Hell yes.👍This is exactly what I was thinking.
You're mixing two frames of reference here.
To use the threadmill example, where the car is moving forward in the air with the ground moving backwards underneath it:
- The wheels drive the propeller
- The propeller accelerates the air backwards, creating thrust.
Now let's move our perspective to the ground being stationary and the air and car moving in the same direction:
- The wheels drive the propeller (same same)
- The propeller slows down the wind behind it, creating a low-speed area behind it. This is where the energy comes from to go faster than the wind.
Say the airspeed is 20 kph and the propeller accelerates it with 15 kph in the opposite direction. The resulting airspeed is still forward, but at 20-15=5 kph.
It's a wonderful almost counter-intuitive system, but once you grasp it it's simple and elegant.
Hey, we need a follow-up on this video considering Derek's follow-up video!
3D print a rigid Zeppelin style air ship. I don’t think it’s been done before.
INTERESTING!!!!
Very interesting. Plus, if he uses hydrogen for the lift gas there's chance for an explosion! 😁
Awesome vid great information
sail boats can also go faster down the wind, if they go zick zack. Thats because of the additional force of the aerodinamics behind the sail (plane), when the wind is passing the sail a little bit sidewise.
By adding the fan you've increased the relative speed of the "wind" to threadmill + fan, so the car has to go forward faster than the fans wind, on a threadmill. That's the whole point of the threadmill. With your setup even a wheel will go faster than the threadmill with sufficiently fast fan. Boo.
The design is still very much possible, but yeah you need to measure the air speed and add it all up to prove integza's model works.
You are mistaken. The whole point of threadmills is to mill threads.
VIDEO IDEA: build an electric brushless motor and use it to SMASH TOMATOES! Just a lot of coils you can wind with a 3D printer!
Love the combination of science and silliness (sillience?).
Your video helped me to understand.
The moving car is stationary relative to the wind but a rotating propeller still generates thrust in still air.
As far as the free energy argument goes, without the propeller, the car won't go faster than the wind no matter how much surface area it has. Any surface area in excess of that required to overcome mechanical friction can gather the energy required to drive the propeller.
Sorry to say, but I like tomatoes.
Another nice video from 3dtegza
Video Idea: for a future video maybe you could create a glider launched with rubber bands that uses the principles of drag and lift demonstrated in this video, maybe using a propeller, to extend its time in the air.
Also tomatoes are disgusting.
This vehicle relies on having contact with both the wind and the ground at the same time in order to extract work from the energy differential of the two media.
One way a glider may be able to do similar is to be large enough to span two different air currents, using the difference in speed between the two to power a propeller
Video Idea: Revisit your turbocharged pulsejet idea. On your last one, you had the turbo blow air into an open intake on the ramjet. If you completely seal off the intake and allow only the pressurized air to enter, you should b able to generate more thrust because there are no exhaust gases escaping through the intake.
Like your videos a lot. I thought when you started talking about sailboats though that you were going to use that as a way to bring up the "suction" force. Since when you are sailing into the wind, close hauled, your fabric sail mimics the shape of an airplane wing allowing you to sail into the wind. This has been the focus of many competitive races now and if you look at America's Cup or Sail GP boats you will see a hard, two piece "wing" main sail to optimize this phenomenon.
Do like your videos a lot though and hope you keep making them. Keep up the good work!
I think you need to use the prop backwards, as a tractor, you rely too much on the fan blowing on it, it should have enough momentum with the treadmill and the wheels to gears, it should work.