Paragliding wingtip vortices visualization

Visualization of the wingtip vortices of a praglider using smokes.
00:00 - Into
00:23 - Preparation
00:45 - Lagrangian point of view
03:13 - Eulerian point of view

[@AndreBandarra1]

I've been wanting to do this for years! well done guys!

[@NT-jk3kb]

Some cool new video ahead!?

[@JAMESBYRONDEAN3155]

Super nice!! I think it would be nice to see the difference between a wing with winglet and one without. Another interesting test it would be to use 2 fumes on top of a selfie stick (like insta360) in front of the leading edge of the wing near the winglet Super video!!💪

[@Max-kc2rc]

Thank you so much !!! Very impressive and very educational !!! - I guess you guys already know that we wanna see the exit of the spiral when you get caught by your own downwash ... the stall and backfly ... the flow starting at the leading edge over the top of the airfoil ;-)

[@batuhanerdin5374]

this comment to the top

[@Tomasbosio]

Nice video!! Thanks for the contribution to the paragliding comunity!

[@MrRaleighman123]

Nice work guys. Thanks for putting in the effort and sharing it with us.

[@andreahabegger6248]

Bravo pour l'initiative Très haut de gamme cette vidéo 🤩💪

[@FLadevie]

Simple (en apparence en tous cas) et efficace. Bravo et merci. A la fois visuel, didactique, et joli.

[@bhphotoBradHarris]

Fantastic work guys, well worth the effort! Tried this 20 years ago with RC gliders but never got this kind of success. Stellar!!

[@FOTOCOLOR2009]

respect for initiative and creativity, good job

[@SemiFlyingPharmacist]

Great visualization, good job!:)

[@Parafrog]

This is really cool, well done guys!

[@sachinp84]

Many videos showing these concepts for planes but finally its there for paragliders as well. Great job. Great video for instructors to teach. Thnx guys..

[@butchdelayaute]

excellente idée, merci de l'avoir mise en pratique puis mise en vidéo :-)

[@Ruzzaaaaa]

Thank you guys. Nice work!

[@steevekite7325]

Génial !!!!! quel boulot !

[@SkydiveHawaiiKid]

Excellent visualizations

[@overthevalley_parapente]

Belle illustration bravo 👍

[@peterphil9686]

Real research. Very impressive.

[@nathanbarraud4349]

C'est juste génial !

[@wardified8566]

I am genuinely impressed 👍🪂👍

[@batuhanerdin5374]

great instructional content. thanks for providing

[@spiridulla]

Really good guys. Well done.

[@claudioxunorus5015]

c'est génial, merci beaucoup!

[@ClimbToSummit]

Merci beaucoup pour ce beau partage !!! C’est mieux que Fred et Jamy !! Trop beau !! Je partage en masse !!

[@jeffgoin]

Nice work!

[@ehsanbaninajar5901]

Nice job guys 👍

[@ChristopheSmith]

If ever a heavily loaded Tandem Hang Glider is the foot launched aircraft that creates the most powerful wing tip vortices. It is good to know especially if you are following one near the ground. 🤗

[@commissionsecuriteettechni8686]

super boulot, merci!

[@TAPAKONUKI]

Très instructif !! Bravo ......

[@wenigdabei]

GREAT WORK !!!

[@sheapelsuser]

This is awesome!

[@sebasweb3645]

Great work. Very usefull for all the aviators out there!

[@12vibaba]

why is this usefull??

[@yungcheng1699]

thank you very much for making this video

[@thomazzz86]

really great job. Thanks! :)

[@Florentin-Parapente]

c'est genial j'adore l'idée :)

[@meow121.5]

Thank you Quentin!

[@georgeg.p.8545]

Higher lift forces towards the wider surface of the wing compared to the tips, inequal but linear suction. Because of lower pressure above the wing towards the wider surface, it pulls air from wing tips area

[@Paraloopy]

Cool! Could you film some high aspect ratio gliders for comparison (Enzo3, X-One)?

[@iangordon8078]

Love it!

[@askvortsov2004]

It would be good idea to attach one more smoke at the center of the wing. It shows downwash. The most important thing for those flying behind, especially in thermals.

Bravo excellent

[@parapentefun]

very nice experiment :)))

[@christophsisolefsky1671]

Amazing to see those normally invisible vortices. I would love to see you guys doing a wingtiptouch! Keep it up, really cool video.

[@sergeig685]

magnifique!

[@sfh594]

Mathematics everywhere . Amazing

[@Halupara]

Thank you

[@fernandocunha4213]

Muito interessante...

[@thomasfischer1017]

Magic...Paragliding😉👍🌠🌠🌠🏔

[@LadoAventureiro]

👏👏👏

[@Itsallgoodtogo]

Flying in competitions... you definitely feel the turbulence in those tight groups fighting it out who is gonna be the highest before the race opens 😅

[@Annecyminivoiles]

👍👍

[@micinvit]

Interesting...do you have the chance to test a wing with winglets (Advance)? Would be nice to see if there any differences with other wings.

[@ddfitts23]

And Air Design has their own version of winglets.

[@andalusienrolfito3382]

👍👍👍

[@bentoflyparapenteetmontagn5932]

L'idée est bonne. Enfin,tout le monde a cette idée mais à ma connaissance personne ne l'a fait ou en tout cas filmé et publié les résultats.

[@TimPentreath]

Great! Shame no Advance glider though...!

One thing that might be done more scientifically would be to measure the rotational speed of the vortex. When you compare the wings, you say that one of them produces a ``faster'' vortex, but this is something that is relatively easy to measure, no?

[@Colombo38]

Yes, we could try an image correlation (like PIV) to get an idea of the velocity field. But it is easier to do this with particles than with smoke. This kind of experiment is more qualitative than quantitative.

[@pierrelourdin2605]

Sur une advance c'est pareil? :)

[@LeSoarien]

Eh eh... Juste pour voir si les winglets sont efficaces pour limiter les vortex ? Good point !!

[@pierrelourdin2605]

@@LeSoarien eh oui on va enfin savoir ;) ou pas.

[@LeSoarien]

Genial. On comprend mieux l'aerologie pourrie en passant juste dans la traînée d'un biplace !

[@bohuslavmosovsky8672]

Hello, maybe you can help me, please do you have the email of the author of the video? I need to ask something, thank you. Bohuslav

[@Colombo38]

Hello, you can contact me here : vector-probe.com/contact.html

[@mariomoravcik6398]

at normal flight this is not that big.. its much bigger when you break the wing...

[@Colombo38]

There is the comparaison at 2:53, trim speed on the right vs breaks on left. Not much bigger, but spinning faster. The size is more linked to the aspect ratio and to the total lift produced by the wing (biger size, like a tandem, produce bigger vortices).

[@josipvucic6906]

@@Colombo38 Good work..I thinking, its dangerous to put smoke inside of the wing and see how air goes out ?

[@Colombo38]

​@@josipvucic6906 Yes, it's an idea I also had in mind. There are two problems: - the temperature of the smokes and gases is very high; - the smoke stains a lot. Put the smokes at 50cm under the sail requires precautions. We used old wings for the tests...

[@mariomoravcik6398]

@@Colombo38 yes.. sorry for that.. i have a problem with the belief that this can cause other glider to collapse.. cause i hear meny times that somebody got collapse from it... and many people do this only for confirming that.. but the paraglider dont produce enough vortice strength for other glider to collapse... in normal flight, not at stall point..

[@sebastienm-l2433]

Des chemtrails!!!!!!😂

[@someguydino6770]

forget wing tip vortices boys; EVERY one of those shroud lines creates WAY more drag than you think. Why not ditch the entire "inflatable -deflatable death wing concept" and just get yourselves some hang gliders? You WILL be MUCH SAFER; but you'll have to get a roof rack on your car.

[@luccl1110]

Merci Quentin pour cette Magnifique vidéo. Je l'ai partagée sur mon site. Je voulais juste vous demander si vous pourriez me communiquer le mode de fabrication des fumigènes, je serais très intéressé pour mes modèles de paramoteurs RC. Réponse possible ici: facebook.com/Lunivers-du-Paramoteur-RC-101105711551900/?modal=admin_todo_tour Merci à vous et encore bravo. Les images sont fantastiques. Cordialement. Luc.

[@Colombo38]

Salut. Ce sont des fumigènes d'airsoft. Tu peux les trouver en tapant fumigène eg18 dans google. On a jouté un allumage électronique (infla) pour simplifier la synchronisation mais pour ta manip ce n'est pas forcément nécessaire. Environ 1'30 d'utile.