1358 An Easy Way To Make An Airfoil - Good For A Wind Turbine

[@l0I0I0I0]

Use to work on military aircraft. We used special paint that cut through the wind really well decreasing drag. It's a small detail but a complement to your foil upgrade for those who will make one.

[@ThinkingandTinkering]

nice tip mate - cheers

[@l0I0I0I0]

@@ThinkingandTinkering Are you familiar with researchGate? They have some amazing research articles but the articles come from independents. Any ideas how to break through their gatekeepers so I can read their research articles? They are being pretty stingy ATM and their are some articles I really need to research there. I figure you probably are a member. Granted I don't ever publish research but I research daily and I'm in need.

[@l0I0I0I0]

Guess it needs to be said, those special paints were highly highly toxic. Hopefully new tech has resolved that issue. Idk. It's been a long time.

[@unionse7en]

if greater accuracy is desired; print or cut some rib profiles, can also create recesses in the ribs to accept lateral/horizontal supports that span between the rib profiles.

[@ThinkingandTinkering]

nice - cheers mate

[@MrAnderson4509]

Great to know it was a naca0015 at 3mm, got it. I never knew that what we made was a classed naca profile, very cool, we used to use the green Duraglass/Dura bond for the ends. The foam core in a can I like to use as a filler like that, in pvc /abs sometimes aswell👍. Thanks Robert for that nice build instruct. I always did like a Darius, especially like the working model you set up and how it decided to create it self a trailing edge at about 11:00 at the top of the air foil mounted... I do wonder why I decided to drag the top instead of the bottom behind, I wonder if it would want to do that every time one would build one...

[@didierdesbordeplombierbordeaux]

Awesomely Genious of Simplicity and Work Efficiency :) 👍👌👌

[@ThinkingandTinkering]

Thank you! Cheers!

[@exploreseafaring]

you need to get one of those old shop signs that span in the wind. It would make for an eye catching advert to power it's own LEDs.

[@ThinkingandTinkering]

for sure mate

[@kevinleebailey]

Fantastic ! Can't wait to see what kind of electrical power this bad boy can output ! 👍

[@ThinkingandTinkering]

You and me both!

[@stevetobias4890]

Very cool, finding materials with a natural resistance to give you the right curve in the foil just by folding it is a very big step forward to making foils easily.

[@christopherfairs9095]

Nice, simple aerofoils and so easy to make.

[@jmatonis]

That's got me motivated to try it out on a hoverboard motor to charge batteries for some radio equipment. Just need to get out and find some aluminum sheeting. Thank you for the post on this.

[@rickytickytarvy1980]

What a fantastic idea and use for my left over cooker hood alloy shroud. Wonder If I can make a massive rc plane using the same techknowhow

[@ThinkingandTinkering]

nice!!! - love the idea mate

[@ThinkingandTinkering]

I would think for sure you might want to check the NACA profiles out for best profile for that though

[@byrdhartley9014]

okay i think this one is my most favorite one yet.

[@ThinkingandTinkering]

awesome mate

[@africanelectron751]

Been watching this homi since the beginning you are a proper creator!

[@bikerfirefarter7280]

Another good skin material is from the stainless-steel kitchen pedal-bins (tons are discarded everyday). And you can make a spot-welder from a MOT to tack the trailing edge together.

[@ThinkingandTinkering]

nice tip mate - cheers

[@justtinkering6713]

You can use posterboard instead of aluminum. Make airfoil shaped ribs, connect them with dowel spars. Glue the posterboard onto the ribs. Then cover with fiberglass fabric and coat with resin. My first vawt was made that way.

[@josephpk4878]

A close replication with the manual bend on the sheet... but, a few teardrop inserts - matching the exact dimensions and shape of the printout - would be a great addition. Prebend the sheet, then open it enough to screw a row of inserts down the inside face of one edge, then bend it all down again and pop in some screws down the opposing face. Much like you'd do to build a boat.

[@kke]

You could use your fancy-pancy 3D printer to print internal supports to make it 1:1 the intended profile. Maybe even just to use the aluminium, paper or whatever as a mold for that expanding goo stuff.

[@ThinkingandTinkering]

for sure mate

[@nenadpopadic2781]

This is inspiring 🙂!

[@donaldburkhard7932]

Find round dowel of size needed and roll aluminum around it?

[@rlegato364]

I'm curious about what adding strategically placed dimples would do to the performance characteristics.

[@ThinkingandTinkering]

expanding on the golf ball idea? nice point mate - thanks for posting - but you know what it. think - you should give it a go and let us know - lol

[@angelusmendez5084]

Pretty neat 👏👏👏

[@ThinkingandTinkering]

cheers mate

[@karlmyers6518]

Soo funky cool , if I was better with my tig I might make some brackets for you but I'm struggling with alluminium

[@ThinkingandTinkering]

aww mate cheers but no worries I can always bodge something up - you know that lol

[@karlmyers6518]

@@ThinkingandTinkering yes Mr magic hands 🤣🤣. I've got a really intensely busy period, much needed before Christmas break but does mean I've missed a couple of "live streams " 🙃

[@mikaelfransson3658]

Awesome! Know you are near mine ideals! The wings form is right but the center is shallow and is lika an J in profil like a planewing and it goes diagonally to the center and work like a propellerfan/darrius/savonius! Now the airstream is pushed to the center of the VAWT an pushed downwards! under one more sitting on two bicicleweels! You can ask why! If you works in winds from 0.5 to 8 m/s! The torque is in max and the speed of the air! to increase a bit more If this is in a barrel/pipe with right openings! You can force the wind in a Wirlwind and near double the windspeed in the aero-powerplant! between the to VAWT the generator is! If you want double ones more the output take one weel more and like a Dukted Fan works wonderful!

[@ThinkingandTinkering]

I do understand what you are saying mate but I made a Gyromill really often called a H form Darrieus it's easier to make than the more familiar egg whisk - cheers

[@godzuki2099]

You could also... Just 3d print it... Or 3d print a mold and make one out fiberglass or carbon fibre

[@rayg436]

what happened to the third air foil? or did it just work better with 2?

[@Aminalpacitani]

ok thank you

[@chupapimunano1326]

Could you add the profile you used in this video? It would be very helpful 😊

[@dremaboy777]

Thanks

[@ThinkingandTinkering]

no worries mate

[@podpub711]

Hi Rob & Luke. Please leave a link to the ‘Builders Board’ that you use. There is not a lot online about builders board and I want to make sure I get the right stuff and don’t waste money. Much appreciated, Paul 💁

[@ThinkingandTinkering]

it's uPVC fascia or soffit - here's an example www.directplastics.com/upvc-soffits/white-soffit-boards/9mm-white-flatboard/GMB200W

[@podpub711]

@@ThinkingandTinkering Dear Rob, thank you so much for taking the time to reply. Much as gracias amigo 😎

[@CitizenSmith50]

I am reluctant to make suggestions without trying them myself, but at the present I am unable to do so.......but would it not be simpler to make/try J-profile aerofoil blades ? I'm sure that you would be able to come up with a simple way of forming and attaching those ! Referenced at the end of this Paper : clean technologies Review Strategies for Enhancing the Low Wind Speed Performance of H-Darrieus Wind Turbine-Part 1 Palanisamy Mohan Kumar 1,* , Krishnamoorthi Sivalingam 2 , Teik-Cheng Lim 2 , Seeram Ramakrishna 1 and He Wei

[@fritanke2318]

In a practical application you need a foam that don't accumulate water. Been there done that 🙄

[@ThinkingandTinkering]

nice tip mate

[@CraigLandsberg-lk1ep]

You didn't explain what 0015 means?

[@clickbaitnumberone1403]

Wait, the shape of the must not be equal, must it? It has to be higher on the one side to create negative pressure to lift the plane upwards, in this case outwards. So if the shape of the wing is equal, it doesnt make any speed..or less at least

[@ThinkingandTinkering]

a NACA 0015 profile has been used before mate it is supposed to give high torque - you can find quite a lot of research on the use of NACA profiles for designing gyro mill blades. What I was contemplating was a Wells turbine - remember that has an equal profile too - I wonder If the NACA0015 would be good for that

[@clickbaitnumberone1403]

@@ThinkingandTinkering Ah I think I got it now. In contrast to airplanes, the windturbines move in a circular way which means the outer side has to move a longer way than the inner side of the profile. So that is the reason why there is created a negative pressure on the outside with equal profiles...

[@inview1]

Dear Sir, may I be your apprentice? I would have to move from Melbourne Australia, but it would be well worth it :) :)

[@darkdoesnotmatter7167]

Hi Robert, could you please prove that the turbine started on its own or did you do the initial spin by hand? How long has it been spinning? What was the wind speed?

[@scotttovey]

If Robert had to start that turbine by hand; he would have scrapped it as a valid design potential and mentioned it in the video.

[@totherarf]

@@scotttovey I agree! ..... It's a trust thing!

[@karlmyers6518]

It's a proof of concept and not a finished product. Make one and let us know your results mate.

[@ThinkingandTinkering]

it is just a Darrieus type mate - strictly a Gyromill - beyond the fact we made the NACA0015 profile by hand there is nothing special about it.

[@darkdoesnotmatter7167]

@@ThinkingandTinkering Darrieus starts on some wind velocity (depending on the NACA profile). From the video I am not able to tip the speed (but camera is shaking). I've built similary sized turbine even with less weight than you are, but it did not started. That is the reason, why I am asking if there was an initial spin by hand and if it continued to spin after the possible "initial spin energy" has been consumed. I definitely appreciate your invention how to really simply create an airfoil!

[@gigmaresh8772]

Wow, ever pursue an aviator's license . . . You have shown an airplane wing . . . BTW they have been in use much longer than the F1. And Bernoulli proved his point in 1738

[@Allan_aka_RocKITEman]

​@RobertMurraySmith >>> 👍👍

[@MrAnderson4509]

Great to know it was a naca0015 at 3mm, got it. I never knew that what we made was a classed naca profile, very cool, we used to use the green Duraglass/Dura bond for the ends. The foam core in a can I like to use as a filler like that, in pvc /abs sometimes aswell👍. Thanks Robert for that nice build instruct. I always did like a Darius, especially like the working model you set up and how it decided to create it self a trailing edge at about 11:00 at the top of the air foil mounted... I do wonder why I decided to drag the top instead of the bottom behind, I wonder if it would want to do that every time one would build one...