Main Rotor Blades EXPERIMENTAL HELICOPTER BUILD SERIES (Part 60)
ฝัง
- เผยแพร่เมื่อ 5 มิ.ย. 2024
- Building the Main Rotor Blades for my ultralight homebuild helicopter.
This is part 60 of the EXPERIMENTAL HELICOPTER BUILD SERIES.
00:00 Disclaimer
00:02 Intro
00:25 Tube Assembly
11:27 Blade Skin
15:01 Bonding Tube Assembly and Blade Skin
22:01 Endcaps
22:52 Blade Seats
25:20 Blade Center of Mass
25:55 Cleaning Blade Skin
26:31 Root Reinforcement Tubes +Plates
30:27 Test-Fit Blade to Main Rotor Head
31:35 Blade Decal Stripes
34:01 Remove Parts from Blade for Cleaning
36:18 Final Blade Assembly
39:06 Overview / Outro
Kanalmitglied werden und exklusive Vorteile erhalten:
/ @ultralighthelicopter - วิทยาศาสตร์และเทคโนโลยี
Here you can see how i Install the Blades and Support my Channel: th-cam.com/video/fouFXizTXJ0/w-d-xo.html
Thanks because you share your skills with the rest of us.
I've watched all your videos, some twice. This one of you fabricating the rotor blades is the most interesting. Thanks for sharing your expertise.
أعتقد أن الوزن أكثر من الزوم ولكن عمل رائع 😎
I must say, your systematic approach to this is to be admired ... well done Sir!!!
Thanks Sir. I will make this helicopter Great.
Parabéns estou espiando desde o início apreensivo por ver voando essa sua máquina, muito capricho serviço de primeira 👌
Very strong rotor blades without rivets ❤️
I wonder.
Muito Bom, ver um trabalho de precisão e de grande abilidades nas mãos de profissionais como você ,parabéns pelo capricho.
Wow, that is fantastic. I wish I'd seen you do this 10 years ago.
Simply wow!! This is one of the best build videos with so much detail. Welcome back!! ❤❤
Boa tarde Amigo, esse é um processo de fabricação no qual eu sempre quis ver como é confeccionado. Sou de Campo Grande - Rio de Janeiro. Parabéns.
Campo grande ou rio de janeiro?
Al fin alguien muestra como hacer los rotores, muchas gracias, me aclaro muchas dudas para hacer los míos.
Un trabajo espectacular👏👏👏
Would be nice if you had access to some cnc mill for mounts and profile pieces. Your fabrication skills are great.
احسنت ايها المبدع تستحق ان لا نضيع اي ثانية من فيديوهاتك
Magnífico trabajo 👍
AWESOME… now I know how it’s done…. Thank you 🙏👍
Muito show de técnica e paciência
Bom diaa ..!!! Baaa tchê vc eo cara parabéns por vc compartilhar seu conhecimento abraço RIO GRANDE DO SUL BRASIL ...!!
Sir. you are doing these well. Perfect tutorial for us to learn & very nice & complete workshop.. god bless you!!!!!!!!.
Exelente trabajo muchas gracias
A lot more details to do than making a fixed wings . Thans for sharing this incredible work ❤
I loved the freehand counter sinking . great video Thanks
Beyond my skill and endurance level. A&P and Commercial Rotorcraft. Mucho admiration.
Ini baru pe you tobe yang bagus tidak ada tipu tipu saya suka ikuti kalau saja ada di indonesia sya pasti suda pergi kursus dan kalau bisa saya akan minta kerja samanaya dan saya pasti belajar.
I think you should taper the root reinforcement. If its going to fail it will fail where the root reinforcement ends.
If they calculated and/or simulated loads and correct materials, this shouldn't fail. 20 screws and less stresspoints and more unbroken lines keep the moving parts stronger. Actually 22 specialised screws, looks overengineeredThis is also composite and looks very well worked out.
This should be good. It is quite over engineered given the intended load.
вот это да! мужик Фурию собирает
лопасти конечно интересно сделаны
There is such thing as a Machinist level for the blade grip area. They are much more precise than a Carpenter’s level.
I’m surprised caulk is used instead of fiberglass resin and micro balloons.
Very nice though. I’m a RC heli person. Building blades is very difficult even on a small scale. I admire your drive!
is it normal that the blades are made of metal? does not it make it heavier?
que hermosas palas muy profecionales amigo me enceñarias hacerlas tengo un proyecto hacer un helicop hace años y por las palas que no sabia como son estoy frenado
Saya sudah lihat semua proses dari episod 1 hingga 60 dan saya tidak sabar untuk lihat awak terbangkan nya..baru tahu susah nya membuat helikopter,semua nya harus ikut buku manual..saya yakin dengan helikopter buatan awak berbanding orang lain yang cuba membuat helikopter tanpa ada pengetahuan dan panduan buku manual,hanya membuat ikut apa yang di lihat..kita bermain dengan nyawa..saya lihat di youtube pun tidak yakin ia boleh terbang,bagaimana perasaan jurupandu😂😂~malaysia boy🇲🇾
Terima kasih kerana berminat dengan video saya. Silangkan jari anda untuk penerbangan pertama saya. Selamat sejahtera...
Awesome work! very impressive! need some of these for my Brantly B-2B
Отличная работа !
Fantástico duas séries do rotor tô vendo assistindo desde o começo vou ver se consigo fazer desse mesmo jeito que eu tô fazendo a minha meu helicóptero mosquito tem que ser desse jeito porque senão não vai dar certo Muito obrigado
Superb video and job building the blades, very interesting and thanks for sharing it. Where did the blades balance in the chord-wise direction ? How close was the weight of each blade to each other? Not sure what adhesive you are using but I had an adhesive failure because I didn't etch prime or acid treat the aluminium. I was using 3M 2216 B/A adhesive, very expensive stuff but I didn't do a test sample. I suspect what you have done will be fine but you could add some trailing edge rivets just to be sure. Laminar flow separates way before the trialing edge so they won't make a difference to blade efficiency. Regards Ben
Thanks Ben. The chord-wise balance is close to 25% from leading edge. I had to replace some steel tubes (as requested in the plans) with aluminum tubes at the back side of the blade to get the chord-wise center of gravity more forward to the leading edge. Had planned to use rivets you can see the bore markings here: 21:57 but after bonding the blade the adhesive seems holding the trailing edges super strong so i wait with riveting and keep a eye on it how it will hold up after the first spin ups...
I weighted the blades, they both show the same weight but my scale is only to 0.1kg exact... Cheers
@@ultralighthelicoptersounds good to me 👍 if you do have any trouble with higher than expected collective forces then you can always add springs to the mechanism, many helicopters have springs on the collective when the blades chord mass isn't perfect. Look forward to seeing some blade spinning. That's when the fun really starts.
@@Ben-Dixey The CH-4 original had the towers with bob weights on the rotor head, like the Bell 47, to compensate that.
@@juancarloscasabuono6651 Thanks, I had forgotten about the weights on the blade grips option. Wonder which is considered the better option, weight vs reliability I suppose. Of course the best solution is to get the mass distribution right.
Rotor blades How long is one blade?
It's a treat to watch you work
The one suggestion that comes to mind is that you should have made a 3 blade and use it for load and stress tests.
Super boulot juste le serrage des platines au couple de serrage identique👍👍👍
very fancy rotor fit for that Nigerian built helecopter.😊
良いナー、うらやましい。
Those black bolts you put together really should be dipped in Loctite before torquing them down✌️🇺🇸
Thank you very much for the video. 👍🤗👍🇸🇯
Hand safety is important. Good Job...
Top de mais. Like merecidíssimo.
It is great blad you have very talent.👍
Da hora inteligentíssimo parabéns
Will also be interested in the tapes as well.
Stick Ruler, Haven't seen one of those since way back when my ole man carried one, daily. Lol
This video came up in my feed somehow, but all hail the algorithm for it,,,
I’ve watched a few a have a number of questions, but will wait until I get through the series as I’m sure it’ll become clearer.
But you, my friend, are a madman,,, lol ;)
I wish you the best on this journey, you appear to have a handle on it and know what you’re doing.
Unfortunately, so many people through the magic of video editing and TH-cam, may appear and come off as an engineer, far too many have earned their degree’s from the University of TH-cam.
I myself am not an engineer, though I play one on TV,,, (or YT),,,, ;)
Tho through my 30 years of fabrication I have learned a thing or two and can speak confidently on a few things.
Again, I haven’t made it far in the series yet, but did you have to address any heat-treating issues after welding any of the aluminum?
With all your bell cranks pivoting on threaded / partially threaded stainless (it appears) fasteners, I would think that bushings of some sort would be appropriate?
Some, from what I could see, are pivoting on the shank, but some appear to be riding on the threads, and with the constant cycling and vibrations,it would seem a bit safer a long wearing.
Yet again, I’m no one but a stranger from the internet making an observation and offering you a well deserved "Atta’ Boy".
Thank you :-)
Ive been waiting for this specific video! where did you figure out how to engineer rotor blades?
Bring back memories of Dr.Shoemaker shop Detroit Michigan , Mc cellan & Shoemaker. 1970-1975.
iyi çalışma kolay gelsin 👍 👍
Muito bom Deus abençoe você
Muito bom Deus abençoe você
What a blessed man thank you
Great job
Waouh ! I was asking to my self, how are you going to build the rotors blades , this is the most difficult part, especially the weight of each blade they should be the same , to avoid nasty vibrations . Show us your first test flight . Tumb up x2 Budy see you on your next test flight.
amazing,man. I m from china,when i watch you video.I get shocked.I want to learn some experice from your video thanks
good good study, day day up
Well, now im afraid to fly in a helicopter now! Never in a million years, would i have guessed the blade were made like this.
Sketchy, and slightly brilliant! Youd think the centrifugal force, would cause the insides to fly out. I guess thats also why theres so many bolts on the mount end.
Still neat to watch!
Yea goods kreatif keren very job sir!
Complimenti veramente, e parecchio tempo che seguo il tuo canale, sono curioso di vedere il bilanciamento statico e dinamico delle pale del rotore.
👍👍👍👍👍👍
Grazie mille... Sì, bilanciare le pale del rotore sarà un passo successivo interessante...
Vary Wil done great work and smart 🧠 🧠 man
Очень аккуратно!
I would think using pieces of steel stock/square pipe/T-bar etc. to clamp the TE together while foam is expanding and drying would make a more consistent and no gap TE.
What is TE
@@rendyalfaricky9207trailing edge
I follow you from Iraq, thanks❤
That was art mate.. 👌
Wow U R Awesome Guy Joy To Look thx.
nice wings my man!
I hope that spray isn't setting up internal corrosion.
Otherwise nice work.
I think I got this man. I can’t afford stainless so I guess mild steel will have to do but what could go wrong especially when I’ve got the Jesus bolts holding everything together
Buen video
Wow that's impressive 👏👍🏻. What type of adhesive glue did you use to secure all the metal bars and pipe together?
didn't think they would be built so heavy
guess it makes sense
Я так понял, что обшивка лопасти держится на монтажной пене и чёрной изоленте?
I THINK THOSE ARE A LITTLE BIT HEAVY, BUT NICE WORK
a realy pro work ! but is it balanced
Ach du heilige Zibelemärit! Wahnsinn!
Gruess uf bärn :-)
@@ultralighthelicopter Hammer-Projekt. Ich drück dir alle 3 Daumen!
essa quantia de furos e parafusos nao enfraquece o aluminio?
ao meu ver, a metade dos parafusos ja estaria de bom tamanho...
tem coisas que menos é mais...
Very novel construction. Great workmanship. I am though surprised that the trailing edge skins are not mechanically fastened, relying on adhesive only, but being a free-edge and prone to flutter, at leat a rivet at the tip, and a few other radial places? The root of course is dealt with by the incidence control plate.
I noted that too.
Hmm. Great home imagination. Wonder how they performed?
Not bad! Looking good!
Had I not thought that rotor blades are so massive and heavy, rather carbon fiber and epoxy.
Heavy blades give better autorotation.
Better to use tip weights as inertia is a function of weight and speed. There’s not much speed at the root end of the blade. There are many areas of this helicopter where modern composites would provide superior strength, lightness, durability, or fatigue life. The rotor blades are just one of them. But it’s still a pleasure to watch it being built.
@@russella7263are you implying that you can build the entire blade out of carbon fibre and resin without the stainless steel ribs? Would that be strong enough? Wouldn't that be too brittle?
I wish i knew better sir, thank you.
@@pauldatche8410, military helicopter blades are built totally out of composite materials as they are the only thing that can withstand the outward forces.
Молодец!
Thank you for very interesting video serie. What is the weight of one blade?
Thank you.. I will do a seperate video about the weight and balancing of the blades...
PAAARABEEENNS, NOTA MIIILLL SEM COMENTÁRIOS !!!
A very interesting video. I was wondering if, when you were finding the blade CoG, was if in the same position for both blades, as in the same distance from the leading edge and from the root and tip, for ultimate balance?
Also, having one end cap painted say white to help with blade tracking and a reference for which blade holder that it's fitted too.
Keren
I can’t wait to see those blades spinnin the designed circles will be seen. 😀😀😀. Just thought. The tail rotor will be AWSOME with same design. Just noticed fuselage panels in black. AWSOME. You Rock
Yes this might be a good time for some drone-shots from above... Yes i black-foiled the panels and put now some stickers on it...
@@ultralighthelicopter would love to see that.
Awesome!!!
Crazy cool
Geil 😂 wann gehts los ?
Great vidio I woul interested about the cement you add it inside the tube before you place it this two solid rods please
All those builders in Nigeria would do well to watch this guy, learn how to properly build a helicopter. 😅
I don't get it?
The reason why they are failing is because they are using steel instead of aluminium!
@@AutodidactEngineer they are failing because they lack knowledge, seen one using peice of flat board as propeller, and from everything I'we seen lot of them have access to knowledge just don't want to go through the effort
Yeah, they should, though.. only thing left to do is figure out geometry and how to make this from replicate this from tinned roof, wood and elephant-bone glue, instead of professional CNC stock material and fully equipped CNC mchine-shop with specialised tools and compounds. But Angola rules!
It's about money
From watching TH-cam videos on USA Military helicopters and rotor blades - they’re built out of composite materials because no metal alloys can withstand the lateral forces imposed upon them. Nomex epoxy is used to build them.
37:00 - It seems to me that these blackened oxidized bolts can play a trick on you. 🤔🤔🤔
Probably still need bushings for bolts in this sandwich.
Estupendo..En cuanto saldrían 2 palas de 9 pies de largo y 8 pulgadas de ancho..soy de RD 🇩🇴...
Thanks for sharing this, its my dream to make my own helicopter.
Ты еще-бы начал с заготовок как их выпловляют было-б ещё веселее.
Just a single bolt to hold the blade to the Main Rotorhead Mount? I'll check those bolts before every single flight, just for a good measure.
Dear sir it's very beautiful work but the ss sheet skin on the tubing assembly fitted only with pu foam?
From Việt Nam
Excellent, I loved this approach because if the twist in it. But couldn't get the right tubes anywhere i enquired...I would be flying or crashing mine by now had the blades not been this much of a headache, building them now the mosquito way. See you on hover mate. 😅.
Spin up your engine I need to see how your gearbox breather leaks are circumnavigated.
Thank you... Im looking forward for your approach on the blades...