Homemade coaxial helicopter rotor blade close up
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- čas přidán 4. 09. 2024
- The first rotor blade complete except end closures. Not saying this is 100% the correct way to make a rotor blade, I have not built a rotor blade before but it is the way I have chosen and the results are to be established.
Making the rotor blades is certainly one of the more challenging aspects of building a helicopter. If you can do that successfully chances are the rest of it will be achievable. There is a huge amount of time in making the blades and the materials certainly add up.
Airfoil NACA 0012
Chord 4.75"
Blade weight 2.6kg
Rotor diameter 4.3m
Tip speed 453 mph
Centripetal force 2.7 tonnes
Blade yield strength 13.4 tonnes
Blade fatigue strength 5.2 tonnes
Rotor solidity 0.07 :1
Disc loading 1.625lbs/ft2
Rotor rpm 900 (now reduced to 750rpm)
My day job is welding on classic cars, if anybody is interested my new channel is:-
/ @bensclassicbodywork
Friend. Show the construction step by step. For you to be inspiration for the rest of the world. Thanks.
Hello, thanks for your comment, I'm happy to share any knowledge I can, there are a few pictures on the build photo video showing the blade spars being machined on my milling machine. A milling machine and knowledge of how to use it is really what you need to make these blades, if you don't have this then there are alternatives using wooden blades for instance. I will post another video soon. Thanks
@@Ben-Dixey Thank you my friend. I have Milling and Lathe. I am acquiring knowledge to manufacture my own experimental helicopter. Your videos will be of great value. Thanks. Marcio. Brazil.
@@TheMarciotec If you have the machinery that is a great start, I will try and put together a video giving more detail on the making of the blade. cheers
Hi dear friend, firstly thank you for sharing with us your beautiful experiences and giving us with the same dream a lot of inspiration. Secondly I would like to ask you which material is this. To me seems that the blades are too thin and lack mechanical resistance. Which is the material you are using to manufacture them ?
Very attention with It, the blades make a lot of actions Lead Lag and flaping during one turn and centrifugal forces need tô bê tested, I think the plants of blades of helicopter Rotorwing aré useds a lot hours and not show problems and have one historic, however the auto giro make excecive job of flapping when turn with low rpm and It is very fanding for structure can to make invisible destroy
Brilliant piece of work
Thanks, it did the job but I would build them differently next time.
It is good to know that these blades can be DIY with a lot of work.
They were definitely a lot of work the way I did it but they do generate the necessary lift to fly. Next time I would try and make a cutter to mill the profiles in one hit and use a single wrap around skin.
@@Ben-Dixey I am in the Philippines and want to build a W.I.G. craft here but finding the materials nessisarry for building is difficult. I joke that here it is difficult to find aircraft grade rebar here. That is why I am researching how to D.I.Y. gyroplane rotor blades.
@@raydreamer7566 interesting, what sort of wig vehicle are you thinking of? I too plan to build a wig vehicle and would go for the reverse delta wing with hydrofoils to get out of the water on take off.
Great Job
Thank you 👍
You should be very proud it is beautiful
Come on bro, you can definitely complete this project, because I want to learn
Thanks for the support! I will do my best to make it work and report my findings good or bad. 👍
Nice job.
Take a look at Gyro-Tech rotors in Poland that's what I'm using.All carbon twisted blades.
They look awesome, but how do they compare price wise?
hello from iraq well done
It’ seems the airfoil is symmetrical and those type of profiles typically have less area of pressure travel. If so why apparent reflex in the trailing edge? Is this an illusion?
Hi, the profile is naca 0012 the apparent reflex I believe is a camera illusion. However it is possible the profile isn't 100% symmetrical. It's difficult to tell by eye.
I'm new so I apologize if my question is basic. That doesn't look stiff enough to support any weight as a cantilever beam. Does the centripetal acceleration keep it straight? What formulas are used for this?
Hi, there is over 2 metric tonnes of centripetal force on these blades, I used the formulae F=(M x V^2)R
M = mass V= tangential velocity R= radius.
You can then work out the coning angle by using trigonometry and the forces outward vs downwards, there's only 1.5 degrees of blade coning as there's two rotors supporting the weight.
The blades have been well tested now
czcams.com/video/7XBsydHEl1A/video.html&feature=share
Beautiful work.
That's beautiful!!!!
Thank you. Improvements still to be made on the next prototype but it's a start.
Very nice work, this gives me inspiration for my build.
Thank you, there's a couple things I would do differently next time and I'm busy testing these blades now. They run smooth and produce lift but I haven't managed to get the whole machine off the ground which I think is engine related. Happy to pass on what I've learnt when you get to building your blades. Your videos and workmanship is very good and I'm following your progress with great interest.
when are you going to spool that thing up instead of working on headlights?
why didn't u use flush rivets, don't think they'd be strong enough? You might be able to use a flush rivet up front too if you slide something in there as a backing bar.
I wanted to use flush rivets on the trailing edge but couldn't find a way of achieving it on both sides. The pop rivets on the leading edge are flush and I would have used solid type rivets if I could but again no easy way to achieve it.
nice nice
Excellent work!
Good job
Hi there , can i ask buddy , after construction and glue up and riveting all done is there still a void inside the blade ? does it matter ? or should it be filled with something ? very interesting video cheers in advance 😁😁🤘🤘
Hi, yes there is a void inside and as long as the ends are capped it doesn't matter in my case. If the ends are open energy will be lost due to centrifugal air pumping. The other reason a void is ok in my case is because the blades are only 4.75" chord, with the material being 0.032" thick and 2024 t3 it's strong enough to hold its shape without a filler material. I could possibly go for a thinner skin material but then would need a filler of some kind.
@@Ben-Dixey thanks 👍👍
very nice work
What is the aspect ratio of the rotors? I thought aa more cambered design would work better, but would be more complicated to build.
Hi, the aspect ratio is 1.65, I do believe a more chambered design would give more lift. It's something that could be experimented with in the future.
Excellent work.💪 can you give measurement for a blade and photos.i would like to try this.thankyou
The blade is 122mm chord. 2m Length. 0012 airfoil. the co-ordinates can be found online for 0012 profile.
Helicopter rotor blade
Thanks a lot this video will elite me
Very nice and interesting video ....
I also wish to build my own helicopter,
Your video will help me while building,
thanks .,,👍
Thanks. I would actually build the blades a little differently next time. I would wrap the skin completely around the spar and only have rivets on the trailing edge. There is a video on YT of mosquito blades being built this way. I can't remember the title of the video but I'm sure it's still on there.
Good video
I see from Indonesian 👍
Не чё не чё так 🤔 было бы здорово получить информацию по больше об этом вертолете.
Снимок каждой конструкции, в частности главный редуктор и несущая колонка интересует.
Вообще если можно чертеж этого вертолета.
Hello. Thanks for your interest. I will upload another video soon with more details on the transmission and mast assembly. The build pictures video shows some details but I understand some explanation is necessary.
Do you have the company that you purchased the end mill to make the Naca profile?
I can't remember what the company name was I'm afraid. It was somewhere near London. All I did was Google bespoke milling cutters and contacted them. A lot of tooling company's offer custom cutters, Bideford tool was another one I contacted but they were more expensive.
Awesome... good job
have all parts made need to put it together and need to make rotor blades
how it is inside
It's hollow inside.
Please tell me the length of rotor blades
2m each. Rotor diameter 4.3m
@@Ben-Dixey thank you...
I want to see the test
czcams.com/video/XLKrlMDiht4/video.html
man thank you so much for. attention to the specification of the plate numberings
@@Alexsandro-zc6sc you'e welcome. 👍👍
Merhabalar kolay gelsin pallerlerin Boy kac cm çapı ve en hesabi nasıl yapılır
Sorry, the language translation isn't good. Are you asking how did I calculate the blade size ?
@@Ben-Dixey hello, take it easy, how to calculate the height, cm, diameter and width of the pallerin
please provide Length width
Hi there are more details in the description, length 2m, width 120mm
Remember the Tip weight (about 3 OZ )
Thanks, am I correct in thinking a tip weight is used to lessen the sensitivity of cyclic control ? My thoughts were that tip weights may not be needed in my case. Any thoughts ?
@@Ben-Dixey Sorry for the slow response....Indeed . you will get more Stability Since they add inertia
i am building a/w 95 helicopter i what to make the rotor blades Airfoil NACA 0012 Chord 7'' where did you get the end mill made ?
Hi, I can't remember the company but I've got the receipt and can find it if necessary. I just googled bespoke milling cutters there are lots of company's in the uk to choose from like this one for instance
www.samwelltooling.co.uk/bespoke-tooling/
With a 7" chord your milling cutter will be bigger and more expensive than mine but I'm sure it will be doable. If making again I would probably choose to wrap the skin entirely round the spar and have no rivets. How far are you into the Aw95 build ?
Great work! I am building a Helicycle in Kentucky. I have watched your progress as you have posted. Very good work I take it you are in the UK? My daughter and her husband live in southeastern England and I visit there as often as I can. If you are nearby on my next visit, I would love to see your aircraft up close!
Sounds great, I don't know much about the helicycle but I've only heard good things. How far along are you? I'm in the southwest about four hours drive from London. You're welcome to have a look, it's just a bit of a drive.
Just seen you have made videos on it, will have a watch 👍
@@Ben-Dixey Thanks for the reply! My daughter is in Brighton. I will likely be there in September if all goes well. They are buying their house and it may take them a while to get settled in. I am about 50% done on the Helicycle. I am combing through the details just as you are. I truly admire the skills you have and your dedication to the art of building your craft. Keep it up! The Helicycle is a single stage turbine engine. I am not too far out from installing it and hooking up the wiring to the governor. Big task indeed. I will be making another video soon to show my 1 year progress! Thanks again and I will reach out about a visit to see you in the early fall. All the best my friend!
@@kentuckyhelicycle2614 Yes please let me know if you come over in September. I have subscribed to your channel and will watch your progress. Really exciting stuff and you will end up with a proper helicopter, part of me wishes I went down the kit or plans route but each direction has it's own merits. There is one thing for sure and that is you will learn an awful lot in the building process, if you haven't done it before that is. regards Ben
@@Ben-Dixey thanks Ben! How far are you from Brighton?
Just did AA route planner and it's 4h 23 minutes drive. 233 miles. So it's not a small journey in uk terms, it would be quite a long day out. North Devon has some nice places to visit though, saunton, croyde, and woolacombe beaches then Lynmouth and exmoor national park. Weston-super-mare helicopter museum is excellent. I've been a couple times now, some real historic pieces of machinery. Unfortunately it's another 1.5hrs north from Devon. My email is btdixey@hotmail.com
Riveting video!! Is that adhesive in date? Has Ed been giving you tips on videos..?
Adhesive in date? I am waiting for the response from the ebay seller. Ed has the talent for videos, not me.
@@Ben-Dixey All jokes aside, you're doing great at videos, I'm enjoying seeing how this is going - from the warmth of my living room no less!!!!
It would be nice to send a video of making the blade step by step
I have made a couple mistakes in making these blades but I'm working on the solutions now. If the blades prove to be useful I will quite happily share more detail on the method of construction. thanks
Can this be discussed with you?
I would like to try to invent a helicopter
Just need help with the blade, will you help?
BITEN ANSARY yes. My email is btdixey@hotmail.com
Hi
Hi uncle
what is the spefic length main blade rotor must be ?
Anyone knows pleasr.
each blade is 2m long, rotor diameter is 4.3m
I will purchase this item
what is the length and width of the blade?
Each blade is 4.75" chord and 78" long.
Ok thanks
Are they made of steel or aluminum?Home Built Rotor Blade
Aluminium. 6082 t6 spar 2024 t3 skins
How long do you fly a helicopter?@@Ben-Dixey
فواز العنزي sorry I don't understand the question
hiiii more video plssss
Где аэродинамическая крутка у лопасти?
Hi, the blades don't have any twist, I was not able to make them with a twist unfortunately.
Вес у лопасти какой ?
What weight the blade has!
Hi, the blade weighs 2.6kg.
This is 0.87lbs/ft
How long is the one plade?
Hi, One blade is 2m long
Which metal is spar?????
The spar is 6082 t6
for me to make the squeegee with a carbon blanket how thick should I use the blanket there is a reinforcement inside if you can order it in Portuguese kkkkkkkkkk seriously
Sorry, the language translation isn't great. Try less technical wording and I might be able to understand the question.
Cuantos metros tiene una elice
Rotor diameter is 4.3m
You have used aluminum skin???????
Yes
How can i contact you.i want to get some
Hi, I have made these blades as one off prototypes. They are currently being tested and are unproven for flight at this point, although early signs are encouraging.
CAN'T HEAR YOU! 🤪
Sorry about that, it was the days before I got a mic . Happy to answer any questions you might have
@@Ben-Dixey no problem, I am hard of hearing so I whine sometimes! I am so intrigued by coaxial helis, the only thing that I think might be equal would be a hybrid multirotor! Keep up the GREAT work, I am gonna be watching! 👍😁
Speak up R talk in to microphone
Sorry you are experiencing volume problems. I will see what I can do about it for the next video.
Hi
Hi