Worlds First R/C Airfoil Flairboat
Вставка
- Опубліковано 16 гру 2024
- Visit brilliant.org/r... to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription.
Support rctestflight: / danielriley
Previous GEV Video: • Worlds First 'Real' R/...
Colin's RCTF Album: truckdaddybeat...
CAD Model: drive.google.c...
IG: danielriley_
This video was sponsored by Brilliant
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
Visit brilliant.org/rctestflight/ to get started learning STEM for free, and the first 200 people will get 20% off their annual premium subscription
Hey. What about a mix of a ground effect vehicle and a hydro. So it has the fuselage like the ground effect but uses a water prop on a long shaft so the prop kinda stays in the water. Might be a interesting build.
@@richfromtang ❤️ God has said in the Quran:
🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 )
🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 )
🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 )
🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 )
🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 )
⚠️ Quran
When the solar plane comming back
Hi ....
I hope you’re doing well, I’m a huge fan of yours from Sudan 🇸🇩 💙, I do study communication engineering and I’m planning to do my last year project a bout fix wings drone, my goal is to make a drone that can find people lost in desert .
currently I’m studying programming and embedded systems coz I want to costume interface and the control station, So I hope you help my and tell me what I need Know and have !
Hate to break it to you but this isn't the first. Feel free to actually use something other than Google to find out.
The low camera angles with the ground effect... just so buttery, so good.
Gotta love how these lovely shots casualy disproves flat earth, like at 9:33
Did it pop for you?
@@pzahle Sshhh, they’ll find it and swarm around it trying to say it does the opposite 🤣
@@timehunter9467 That's pretty awesome
The same system as the Russians 60 years ago!
ua-cam.com/video/mryyvJwakn8/v-deo.html
You’re incredible at explaining *why* this is a challenge and *why* you’re constraining yourself. An outsider would just watch this video and write it off as a regular old airplane/boat project, but you really did the project justice by framing and explaining the problem well
Hey, Your channel is good too! Ran into both of you this week and subbed to both!
He is a person who is thrilled with the Tandem Wing possibilities in Ground Effect. And he doesn"t have the nowadays usual ignorance on that great invention. Awarded as a highranked technology for the future.
This sounds like a reply to a discussion post on blackboard.
I've been enjoying this series, so cool to see your conclusion with it!
Also nice shot of the plane with the trolley buses on the bridge in the background like at 11:15
Really good to see you on these videos too. Like an urban planning and special interest enigma of the Internet.
Hi train guy
Maybe a suggestion for fighting the flipping phenomenon: Make the front airfoil way thinner than the rear one, which causes it to stall almost instantly when the pitch gets out of hand. The rear wing would at that point then still provide lift and force the pitch down again.
Next, I think the reason bigger planes are inherently more stable within Ground effect, for two reasons;
1) The ground effect regime works within a window closely related to the wingspan (as you mentioned in earlier episodes). Bigger/ heavier planes require more wingspan in the first place to even fly, and thus give them a larger Z-window to operate within ground effect.
2) Heavier planes will also respond less aggressively to water disturbances, as the relative change in lift as caused by the disturbance is far smaller than with a tiny plane with a very small air gap.
The heavier = more stable might be an issue inherent to larger craft, to do with the square (^3) increase in mass as size increases, which also necessitates stronger materials which inevitably increases density compared to small RC craft.
Meanwhile, lift, drag and interfering forces from wind and ground types increase less proportionally, so inertia from the greater mass can smooth things out and reduce or eliminate disturbances.
Throw a piece of sand in the wind and it'll tumble around and get blown over by a slight wind. Throw a boulder made of the same materials and it's orientation and trajectory will be as stable as can be.
Speaking of which... these definitions of 'flight' that he's reading people comment about is getting pretty ridiculous lol. By their definition, chucking a rock in the air would constitute as 'flight' while skipping a stone on the water wouldn't because it 'cheats' by bouncing off the water.
I am probably wrong but wouldn’t the Newtonian lift of the thinner airfoil keep it flying instead of stalling? It’s not exactly slow.
@@Riverbed_Dreaming for most lifting bodies, the gross part of the lift comes from the suction (top) side of the wing, so stalling the wing will indeed still give us some lift from the pressure side of the wing, albeit not a lot. But even if we assume the pressure side would contribute half the total wing lift, then in case of stall you would still lose a significant portion of lift on that wing... This is me just rambling though, validation by experimenting would prove who is right :)
The shots of that thing cruising in ground effect belong in one of those "Oddly satisfying" YT vids. This is my favorite video of the series. Just sooooooo nice to watch that thing cruise.
Can you find out the difference in efficiency between flying in ground effect and flying normally in mid air in the next video?
I see you going for a back to back top comment😉
Good f ing question
rc long range mission in groudeffeckt and normal flight
I’ve been thinking about this question when he got interested ground effect vehicles in day 1.
He mentioned in video higher payload and lower induced drag 08:22
"Wow, look at that fish, must've been eating a bug, pretty neat"... that killed me man
Finally! I was waiting for you to upload. I had just got a 3d printer and I came across this channel and binged most of the vids you have posted. The things you create are so inspiring, I am in the science field and I dont think I can make as cool as stuff as you but its inspired me to use 3d printing in my research and its been awesome. Love the content man keep em coming
If you stick around and watch the whole video, there's a secret rap.
what you made was very very cool not to mention Ric Flair drip that was badass
7:45 Günther Jörg had previously made tests with RC models for all his Airfoil boats. That is, these RC models were also all functional!
On YT you can find videos of Ingrid Schellhaas, this is his daughter, who continues his work and has worked for years with her father on the boats!
The front wing is a canard: it must stall first for stability. That is why the big old one has different aerofoils for the two wings.
I suggest that you increase the front wing loading, angle of attack and sharpen the canard leading edge and reduce the wing thickness to ensure that the front wing stalls first. Also, reduce the angle of attack of the rear wing so the whole aeroplane body is at a positive angle increasing lift.
Also, at small scales, a flat aerofoil works better than a classical curved aerofoil. The Wright brothers did not notice the scale effects obvious between the flat thin wing of a little bumble bee and a thick eagle wing so they used a small wind tunnel and then made their first powered aeroplane worse by building thin wings which had been optimised at tiny scales in an insect-scale wind tunnel. You are going smaller so your aerofoil must be flatter than the human carrying original. It is all Reynolds numbers!
Yes, and those differences can be be more dramatic than you would think, and more tricky. I think I remember that when Burt Rutan, who is a very competent aircraft designer, scaled up the Beech Starship, he ran into some unforeseen scaling issues.
you've got it with this idea, seems correct to me
I suggest that you do the above and show us the results on your channel.
@@ruzziasht349 He actually makes some good points. I agree with a lot of what he said, and I have a LOT of experience in RC, including from scratch designs, have built my own full scale airplane, and am an engineer, electrical, not aerodynamic, but I did have some applicable physics and fluids courses in my core requirements.
If he has the time and inclination that would be cool. If you just meant that as a snub, that is totally uncool. I'm guessing you meant it in a positive way.
This is fantastic! Your design has come such a long way!
Watching your failures and then your eventual success has been a wonderful experience thank you for sharing.
Looks like you nailed the design, she flies...er, floats, wonderfully, great work!
Dude, what a rockin' good show.
At first I thought this was a pointless exercise, due to a bad definition of ground effect.
BUT, the thought process you went through was very interesting and worked through the various forces in play.
Great work!
You take the mystery out of genius by thinking through problems in an understandable way. " Airfoil Flairboat 101" should be a required course in any college but here it for free to the open minded and curious! Thank you Professor.
Best song yet! And in all seriousness, your channel is definitely some of the best of UA-cam.
cant stop watching this thing float. you solved the practical engineering problem! congrats
That was a neat fish! Thanks for sharing all of this.
That clip was from Beyond 2000! Wow, that brings back some memories. Great video as always !
I searched before I posted the same.. I grew up watching that show!
The music always get me😂 I love it
A flair boat based on the same information that you found on the internet was my next project, you have beaten me to the build. Mine was going to be larger and heavier to help deal with the water conditions in much the same way a larger model aircraft is more solid in the air compared to a smaller one. Thank you for your work as it has inspired me to get a move on and build mine. I will be using the same material but covered with office laminating film. I previously made an X-bow catamaran as a tow-a-long camera platform for my RC yacht using the same covering technique. The foam/film combination is a match made in heaven. Looking forward to what you come up with for some improvements. All the best Allen
Maybe link up with FliteTest to build an enormous one? Love this series
FliteTest is yesterdays news. They borrowed most their talent from 'interns' ...
@@Hebdomad7 Flite test certainly doesn't have this level of smarts.
@@sUASNews That´s true. They do know how to work foam though.
@@Hebdomad7 peter sripol is the man nowadays
Think Flight made one that's pulled by a boat
I think dispite the different terms and arguments, we can all agree on just how awesome and satisfying it is to see it gliding over the water
🤩
The reverse Delta mainwing in ground effect, with a high lifting tailwing not in ground effect is the most pitch stable configuration.
Your right this is more like a SES of rigid sidewall hovercraft.
You could try enhancing dynamic sideskirts by curling the edge vortex down at the lower edge of the wings
9:49 I loved the added bonus. You are clearly very talented, thanks for sharing.
This was super cool! Those low long shots were beautiful. I'm excited for your next video!
Your exeptional gift to explain Your theories, and inspire anyone who has the fortune to watch Your work, can not be understated....
One of the things to remember about these types of vehicles is that the low power to weight ratio was part of the design goal. It was a vehicle designed to carry heavy loads at high (er) speeds using less fuel. The famous Kaspian Sea Monster could shut down the forward engines and fly only on the two aft engines once it was airborne. That was the design goal. With full power from all 10 (!) engines it could probably get out of ground effect, they just never tried it. It could fly quite high above the water though, well high enough to be out of the ram-air hovercraft effect. So, designing for, or using, reduced power isn't cheating. 100% power for take-off and 20% (or less) power for cruise was the intent. It dramatically increased range and reduced it's audible and infrared signature.
Designing and building a vehicle that can ONLY operate in ground effect at such a small scale, with the incredible power to weight ratios that a model can achieve is automatically going to be tricky to do. Scaling down the vehicle without compensating for the change in relative air density just makes the model more airworthy. It's operating in a relatively thicker fluid for it's weight/density. I'm not sure if less wing area, a change in airfoil, or added weight would compensate for that though. I suspect that the wing-loading on the model is quite a bit less than the real craft.
In any case, wonderful videos and great work on the craft.
The Aussie presenter is from the Show BEYOND 2000 in 80's science, tech & Medicine show of the latest developments around the world. I miss it. But thanks to UA-cam creators like yourself helps. Thank you
0:10 = yes you can, by reduce throttle, add extra weight, shorten the wing, or designing hole new air foil. but adding more weight or shorten the wing is a better solution, because it cost efficient
14:56 = is not cause by smooth surface, but water tendency to "bounce" or "dampen" the pressure so the craft fly smooth
It is beautiful to see in action, I love how you clearly explain your thought prosses and the physics behind it. The low camera angle was a great idea and really shoed off the vehicles performance.
"In my opinion, this kind of plane is impractical...." Until it is 😅 Love your work, good Sir. Never stop doing what you're doing. 🤘🤘👌
Very happy you are continuing and contemplating a high loading attempt.
I'm fairly sure that packing tape would just want to stick to the water, back in the day they used to try and polish the underside of race boats as much as possible for it to slip through the water since that's how it works in the air. However it just ended up increasing the surface tension to the hull and ultimately slowing stuff down, not that it matters at speeds like this but it's still a fun anecdote !
You could make a surface more hydrophobic by waxing it. No idea if a fully submerged hydrophobic surface has less drag than a fully submerged hydrophilic surface, but at least it should make it easier to lift the last millimeter or so out of the water at slow speeds.
This one is seriously cool. We are learning the pros and cons of the designs real good
At that size and weight, I suspect the surface tension of the water makes takeoff more difficult, and the amount of water stuck on it impacts how it behaves in air, significantly. Personally i like that basic design best, and think it just have to be bigger, and heavier, to stay in ground effect very well, and still not be able to fly. Any model that needs almost as much thrust as its mass to get out of the water will be very difficult to get unable to fly, at least with elevators enough to allow free flight.
You're brilliant. You totally understand how airplanes work and all about motors and electronics. I have so much fun watching. Ground effect or not.
I think a "ground effect vehicle" is any vehicle made to fly more efficiently in the ground effect. No matter if it can fly or not
I think so too. In my opinion, any vehicle that is designed in a special way in order to take advantage of this effect deserves to be called a 'ground effect vehicle'. You still call a Jeep an 'off road vehicle' even though you can drive it on roads too, don't you?
You did it! The way it hovers above the water is amazing.
BEST video yet ! I love your experimentation on this subject. These are all questions I’ve been asking myself. I wonder if Think Flight’s “Not a Pool Toy” could better test par thrust (if he decides to mount an engine someday) With a bigger, heavier model, I think you could experiment better with weight distribution and power settings. Have you ever studied the Japanese WISES (Wing in Surface Effect Ship) model called Kaien-3 (海燕-3)
There are several UA-cam videos which show an underpowered craft with the motor(s) mounted way up front on a kind of canard. It looks so underpowered as to being unable to climb out of ground effect but as a result flies extremely slowly. It’s a fascinating craft which might be another platform for a future build. (I’ll donate the gorilla glue !)
That really is quite something. Ground effect is certainly more stable in a heavier aircraft as their inertia is greater so they're slower to react to minor changes. I would certainly call that a ground effect vehicle. Great job.
I really love this project and am definitely gonna try making one of these ground effect vehicles!
bro this is so cool. the gliding was really smooth.
Good job man!
Very interesting topic, I made a few experiments with RC hovercrafts and had a real One by Scat hovercrafts.
Maybe interesting for you to try something with the architetture of the amphistar
I was enjoying this video, and then the song he wrote played and I had to immediately pause the video to type this comment-I’m now upgrading it to loving this video. That song was gold!
Oh my God, I remember watching that Australian show when I was younger! I can't remember the name, though. All cutting edge tech.
Beyond 2000
Beyond 2000, have a look at OUR Tandem Airfoil Flairboat Technology, still legally protected.
With a song to boot! Get in, what an amazing series. Well done.
damn dude, good one! yeah sweet shots with that zoom lense sitting on the shore. idea, the small scale you are working in seem soooo vurry sensitive to tiny variations, re surface of lake union etc...i would love to see a 3 or 4 times bigger version, with mods to add weight and move cg around, i bet you could lift alot...oh and road trip to lake chelan for the big boy test...
Kudos for making that work at that scale. So much logistics.
Love that it just becomes a normal boat when it capsizes 😂
love how smooth it is and such a brilliant demonstration of ground effect. well done
Please make a huge one where you can sit in with rc controls
The up and down movement during grass and tarmac runs reminds me of the "porpoising" that F1 cars are experiencing now that they are more ground effect focused
The reason building a "small" WIG is actually harder than a "full size" is because you are not able to "scale" down the air and water! 😁👍✌
Oooooo, and you FINALLY get my seal of approval, .... I certify this to be a WIG! 🤣😱
"Ric Flair boat go 'WOOOO~!' On the lake!"
Whoever came up with that line deserves a raise.
Now you could "bolt" solar panels on to it and see how long it could "fly"
Please continue this series. I'm very curious if it's possible.
Perhaps investigate canard solutions? A higher loading on the front canard and that stalls out of ground effect.
I believe that if 'true ground effect' is to be found, the thrust should only be converted to speed, not lift.
Awesome, so glad you figured out how to make it work. Can’t wait to see what you make next!!
By the way "YOU CAN MAKE A TERD FLY WITH ENOUGH THRUST AND COMPUTER CONTROL!" .... 👍👍
when you filmed it with your low angle shots it was the most beautiful thing I've ever seen😲excellent job and thank you for sharing it's fun to watch
I am envisioning twin tails like and f15 for stabilty (increased drag - i get it) and a concave mid section to compress air under the center hull. This concavity could be decreased towards the stern to further compress the pressure. I get you may have already thought this thru and I havent had time to watch every second, but I am fascinated and respectfully submit suggestions that you didnt ask for. Whatever you call this its badass. Love it! This kind of backyard ingenuity is amazing. Please keep it up and love you channel/content! When youre ready to build a full size one, I am so in!
I suggest all that would work better if it was driven by a prop in the water.
Impressive.
Massive improvement with this version. The water line shots were beautiful.
I think you are focusing too much on the ability to fly out of ground effect. Your focus should be on the efficiency gains from flying in ground effect. To me, the definition of a ground effect vehicle is simply one whose energy requirement is drastically reduced based on proximity to the ground for a given speed. I would love to see which one you could fly longer, a large solar glider or a large solar ground effect vehicle?
Not for me, not for a useful practical one. I would love to have a ground effects vehicle like this, and in that case I don't think the efficiency between a high flying and ground effect craft is at all the interesting comparison.
Since this is an air/water vehicle, the interesting comparison for me would be the WET efficiency vs ground effect efficiency, and I expect that is massive. For a practical two or four person sized craft the other thing that would be very important to me is the flying height. Without enough of it the vehicle is useless with any increasing magnitude of waves overflown. Also, you could haul ass through the Manatee areas without having the slightest worry about even touching one, as where I live, in Florida, waterways like large extents of the St Johns River are now wake, slow idle zones for Manatee protection. The other large consideration for transport, even just sport transport would be speed, where this vehicle should trounce any wetted vehicle, even hydrofoil.
If you wanted to use ground effect to transport goods (or just as a science experiment) then I would agree that your comparison is definitely part of the equation. Not arguing, your opinion is your opinion. I'm just trying to look at it from the larger scale perspective in terms of real world payoff.
I love that on one of the low shots, the doubles disappeared leaving just the rowers floating above the water.
nice to be early
I seriously love things that fly. You are fulfilling many dreams I'm sure.
first pog
Nope.
Yes
@@poltergeist9972 Nope.
@@poltergeist9972nope
@@tylerloney4361 if u set it too newest first he will be in the bottom so yes
Good work and inspiring me to get our model hoverwing work going again. I do get the impression from what I read on-line, that power limiting was important for the flairboat. Apparently client of theirs in the Far East replaced the engine with a gas turbine, which caused him to crash.
" I'm not really sure " One of the most accurate statements.
Aerodynamics is probably the most complicated subject there is. Basically you can seldom be sure about anything. We can rationalize how we design things we do design, but basically we are just guessing and try to justify our guesses with assumptions about how things work.
What you are attempting with your over the water ground effect vessel is closely comparable with the problems being encountered in 2022 F1 car racing. They are spending millions and have access to wind tunnel testing , and still failing to find a sure-fire solution.
Anyway, your work is to be commended. and most important - looks like a lot of fun !
First time seeing any of your stuff. Really neat and loved how much you actually explained with what you was observing.
the angle at 7:54 makes it look like something is floating on the water, really cool!
Well done. 👍
6:50 That lofting behavior after removal of power is fascinating.
I kinda like this more than regular rc speedboat. This don’t splash water nor make a lot of noise, but high speed. This can be a great ground effect drone for spying or as a weapon, amazing stealth
Congratulation, this model is a huge improvement to the previous models.
One other thing you could try is to put fins on the back like a surfboard. It would help keep the CG rearward. Also note that when the boat is most stable the rear is a bit higher off the water than the front. ... Awsome project!
Ground effect is noticeable in B747 at approximately 200’ above the ground when coming in to land. The wing span is the same, there will be a correlation between height above the water and your rc craft wingspan of a similar ratio, except for Reynolds number effect.
This is the pinnacle of engineering for this channel.
That's song was fantastic. Great video. Very impressed.
More RC raps please. I didn't know I needed them in my life
So the haters talking about, "It's not real ground effect, because it can fly" Just don't understand thrust to weight ratios. Even a full sized "official" ground effect vehicle would fly with a powerful enough engine on it -- A frickin' toaster will fly with a big enough engine on it. You made a real ground effect vehicle; as real as any full sized one. Great job!
You're closing in on 500k subscribers good job, I really enjoy watching your rc builds. You're underrated, Keep it up!
Dude, your killing it. Great videos edits, gets rc project, and music! Love it.
This is so sweet. You should try another model with a less wide front wing. What I think you want to create is a condition where the rear wing creates more lift than the front wing at any given velocity. If the new design has a front wing that is open for ram air the rear should always be lifting a bit more. The second thing you can do is create a split-flap on the front wing that can dump pressure. Then this can be controlled by a tip sensor.
Your differentiation between "ground effect vehicle" and "ram effect vehicle" here is very interesting to me. It seems to me that that might be a useful differentiation to have in projects like this, and in the study of the ground effect itself.
Instantly loved this channel. Can't wait for the next one
I made some ground effect craft out of foam a few years back. The second one I did was a tandem wing like this and it was definately the more complex and challenging to get results from. The first one I tried was a Lippisch type which with very little tweeking gave very good stable flights. These were all unpowered gliders BTW.
I think you're on the verge of a marketable vehicle here, because that thing looks fun as hell to drive! I could see folks racing these on purpose-built indoor ponds some day.
So so good, keep working on it.your on to something here.
Awesome video I love the smooth clear water the flight the cleanness of it is so awesome
Awesome build! Looks like you were testing in the area near Ivar's Salmon House under the ship canal bridge or possibly in the canal nearer to the University Bridge.
No matter how good the rc vehicles are, the songs are always the best part of the video 🤣
"porpoising" is the term. The ground effect is turning on and off. You got it worked out, but it is amazing how fine the setup has to be.
Ground effect may have application to slot cars. External electric power, high speed turn, no crashes. Less friction.
Plenty of juice for forced air, even.
How cool is that, So smooth and floaty, Love the song!!!!
9:32 that shot proves the Earth is round!!! Having the camera low to the surface, curvature actually hides the thin row-boats in the distance...
How bloody marvelous is THAT??!?!?!?!