Paraglider Design Secrets with Hannes Papesh - BANDARRA

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Phi Paragliders - Hannes's Company
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I've had the chance to attend a talk by Hannes Papesh on paraglider design which was put together with the help of Carlo from Flybubble and Becca from DSC, my big thanks to all 3 of them!
Even though it's just marketing ;) it's still hard to find a wing designer that will openly talk about their process and findings so I couldn't miss this talk.
This is only an excerpt of the talk as it was 3-4 hours in total, but focuses on the design part of it.
If there is some interest and time available I might release other parts of the talk.
#paragliding #parapente #gleitschirm
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[@FlyingScot]

Been a fan of Hannes for a long time. He even customized my Nova Ra in the colours and design of the Scottish flag for me! Still have it. Whats more impressive is his evolution of the CAD software he has developed over the years. I hadn't realized it was all parametric driven until now. Amazing to see the CFD images in this talk too. Didn't know he was giving talks at clubs. Need to get him over to the USA for a tour. His accent and way of presenting makes you listen more attentively. Thanks for sharing Andre and post more of the talk if you have it. Cheers Iain

[@thesuit4820]

Interesting, Phi's website has the clearest and best explanation of the design intent and comparison between their range. It's not just waffle, it's really clear about what each wing is for.

[@jwburton]

Just another reason why I respect the price of a quality wing.

[@rogergusty1722]

I will need to watch this a few times to take everything in ... so much information, and so well delivered. Awesome. Thank you for uploading.

[@ladybird5053]

Great content. Thanks for uploading the video. So interesting how much work there is in a paraglider. And how passionate Herr Papesh still is. Although the audience seems a bit dry and didn't get his humor.

[@rogergusty1722]

For me, its not only THE BEST paragliding channel, but its THE ONLY paragliding channel !! Keep your videos coming!

[@MrJdsenior]

Tucker Gotts is pretty good, though PPM, not PG, so a bit different, but if you want to see cool flights over Meteor Crater, beautiful mountain ranges, several countries, racing, etc., it's cool. Also some acro..he's on the paradigm team that does Oshkosh, Sun-N-Fun, etc. flyins. Yes this channel is cool, another of my favorites. ;-)

[@rogergusty1722]

@@MrJdsenior Thanks John, I found Tuckers' channel a few weeks back, and then stumbled on Andres' one a couple of weeks ago, I am still finding my way around, but thank you for your comments.

[@MrJdsenior]

@@rogergusty1722 You are very welcome. People have given me good tips I didn't know about when responding to my comments, so I like to try to share some finds that some others may not have seen. Cheers!

[@Wintermute909]

That was great, thanks Andre. He certainly likes his analogy's

[@LiiMuRi]

I've been flying Phi Tenor for a couple of years now. Great wing. I've also watched this video ones before, but now it was in my recommendations again, so I'll watch it again. Cheers!

[@Andyg2g]

I have yet to enroll in a flight school, but I am intending to do so soon. I have been utterly obsessed with paragliding these past few months - thanks, KZbin - and the comment about the high pressure region above the wing creating a “bubble” was really enlightening to me. It also clarified FlyBubble’s channel name. :)

[@Andyg2g]

8 months later: I received training and am just as obsessed, if not more obsessed. Paragliding is beautiful, terrifying, wonderful, self-reflective, and just so surreal. Respect it, enjoy it, and learn from it!

[@timtetiva1747]

Thank you Dr Strangelove! I am putting in my Phi wing order as we speak. I can not wait to fly this perfect contraption ...

[@YankeeinSC1]

Interesting stuff, but as a user of the end product? It's just so easy to take these contraptions (all aircraft and the engineering behind them too) for what they DELIVER, with little or at least un-mentioned appreciation for guys like Hannes. I never got to thank any of the engineers at Cessna, Lear, McDonald Douglas, Boeing etc... so here's my public hats off too guys and gals like Hannes!

[@MrJdsenior]

YES, Andre! I would very much like to hear the rest of the talk, especially if it is design/analysis related (more in depth tech/physics oriented flow/pressure type stuff, especially for various wing designs, ie. high performance vs. A wing, etc. would be great). I would be interested to hear your take on this presentation (are you an engineer/physicist/scientist or a layman in those fields). Compared to a rigid wing, these things have VERY flat leading edges. I suppose some of that is due to having to accommodate the venting, some maybe for very gentle angle of attack stall, but it seems like one problem it would cause, with the resulting large relatively FLAT area frontal stagnation pressures, is LE collapse, especially at higher speeds. This stuff is fascinating. to me. One thing those upper surface pressure profiles tell me is that if you collapse the last 20% or so of your tip, it shouldn't be much of an issue in terms of lost lift, or dramatic speed increase (big ears demonstrates this, as well, which people often hold to the landing flare in certain conditions) as long as you keep the glider flying straight and level, weight shift, a bit of opposing brake if needed, and it should not be cause for major panic, at least for a beginner or low performance wing with good self reinflation properties (on those ultra high performance super high aspect ratio competition wings, all bets are off, have you watched PROS trying to launch those things? NOT ME buddy! I'm looking at this as an engineer, not having yet flown one YET so I have NO practical experience, which doesn't ALWAYS jive like you think it will with analysis, in fact, to the finest degree it never does. One thing I saw that made some sense the other day was PPM TEST pilots talking about balling up if your wing feels or looks like it is beginning to spin to eliminate, or at least lessen, twisted lines. Makes sense, lowers your moment of inertia about the vertical axis (try spinning someone in a bearinged chair, arms in then arms out, and you will find you can get them spinning faster and more quickly with less force than with arms out-keeps the chute/lines from "leaving you behind" in the spin acceleration. They also said to correct a twist, working BELOW it by pulling apart the lines does NOTHING. They said to pull the lines apart ABOVE the twist, and again, from a dynamics standpoint, that makes sense. I would also think some differential flow technique, such as sticking your arm and leg out on one side might aid in rotating out of the twist, but I'd practice this HIGH, over water with FLOTATION, and a pick up boat crew...ie SIV class, first. It may be a common technique, but I've not seen it, and maybe one of these test pilots should try it out, taking precautions. I know they said some of what is taught in SIV courses at times is DEAD WRONG for getting out of certain situations, and these are the guys that have to get out of them several times a day, possibly, for YEARS. I took a look at the PHI website. You can tell they are technical people and engineers. Gorgeous site design and the wings are VERY interesting. You have opened up a new contender here for my first wing. I am looking at the MOJO beginner wing, as well.

[@TeamDayaShankar]

Super interesting share! Thank you for putting it out for the community to watch, listen & learn straight from the master-designer! I really appreciate your efforts, Andre.

[@allthesecontinents]

It will be very nice to see whole talk! I hope that you can find some time to upload it. Thank for that one!

[@gcm4312]

14:55 this image is super interesting. If I'm reading it correctly the majority of the lift is concentrated - by design - in the middle and the last third of each side of the wing is almost acting as a winglet, holding off that wingtip vortex. I'm curious to see how things look in a competition wing which is 'flatter'... I guess they use the tapper of the wing chord (like Boeing's 777) to minimize the wingtip vortex in that case. Maybe we'll see some cool winglet designs in the future

[@PetrPolach]

This is not quite precise. The side of the wing acts also like rudder and there still must be lift, to keep the canopy under tension in horizontal plane. But you are right about the main parg of the wing creating the most of the lift. Optimizing the lift distribution - therefore minimising the induced drag (via profile, AoA or winglets) is very complex thing to do, even harder with flexing canopy, that is curved like this and has to maintain big margin of safety.

[@PfropfNo1]

My thought is that the center is parallel to the ground, while the wingtips are almost vertical. So the center part of the wings creates lift acting against the weight force, while the wingtips create lift forces acting against each other, which is not efficient. Thus you would want as much lift as possible in the center and barely enough on the wingtips to keep the wing stable and safe

[@AShebins]

Thank you for recording this, very interesting! Safe flights! Post more info on motor reflex wings please!

[@lhior]

Thanks for sharing the speech. It is alway very interesting to get some insights to the designing and making of the paragliders. That gives me an idea of what to look for when I am about to step up from my current glider.

[@MrJdsenior]

GREAT STUFF, again. You pretty much never disappoint. STILL enjoying your channel. I'm a EE with a fair amount of aero and fluids knowledge but NONE regarding soft wings. Felt like I was back in class on an opening day (It seemed like many of my professors had one accent or another ;-) ). I remember my Mechanics of Materials prof. Dr. Desai, (who was always asking me about the airplane I was building at the time) had an Indian accent (obviously), but it was about 5X thicker than this guys, and one day he said totally deadpan and straight faced "I am thinking about teaching a class in English next semester" (read it in the "he is moving at very great velocipy" statement from the movie "Short Circuit") and inflection as it he really WAS thinking about it. Pretty much the entire class broke up...so then he said "What is funny?" (same THICK accent). At that, he got all the rest of them...funny guy. Just reminded me of another one. Can't remember the exact name of the class but it was Engineering Ecology or something like that, and the instructor did design for water treatment plants. In the opening class one of his quips was "It may be shit to you, but it is "bread and butter" to me. Hilarious.

[@notafanatic]

Cheers, I couldn't make any of the talks he did around the country so I was hoping somebody would post this.

[@edinsalkanovic9478]

Thank you Andre and Hannes!

[@rfs2942]

Ao amigo alado de além-mar: Muito obrigado por compartilhar esse vídeo. Não deixe de publicar o restante pf.

[@GetiG]

Best paragliding channel🙂

[@KeithFeickert]

Design question: why do wings not have twist/washout in their design? ... or at least I am unable to see it, does anyone know of a wing that does?

[@sachinp84]

Thank you. Very informative video...

[@Hemersonr]

thanks for sharing... he is a master of design

[@abbassultani1468]

Hello Andere I made a single skin paraglider, and I wan to make a double skin could you give me some videos to show how to sew a double skin paraglider???

[@shredderegypt3394]

I found project on the internet. Can you check it. Is it correct or not?

[@mutluluklameskulolnz2932]

What a great advice at the end of speech..."Don't trust manifacturers"

[@madeketir]

Very interesting video!

[@interlectual_authority]

Hannes is a machine.

[@helicopter2992]

Thank you paragliding adolf! May providence continue to guide your master plan for programmable natural selection! 😂

[@paragliding-tshirt8791]

Top :O

[@John_Knock]

first comment

[@indeewariwasala2963]

Sir.i' m. Peraglider mashing opertor

[@zhuozhu5092]

然而并没有什么卵用

[@JulianBernhuber]

Love how Hannes explains the art of designing a wing, but please (tell him) improve the pronunciation! Even as an austrian myself it's hard watch...

[@AndreBandarra1]

You can't be good at everything

[@turbofurz]

Watching the video I'm ahsamed because if my pronuncation! Sorry for that! :-)

[@mbrunnme]

@@turbofurz Don't worry Hannes, I understood every word and found the talk highly interesting. The online community has been waiting for a talk like this for a while - thanks to you and Andre for making it happen. Looking forward to seeing more from you.

[@AndreBandarra1]

@@turbofurz I was thinking that it would be nice to hear Julian with his beautiful accent do a talk on paraglider design ;)

[@PetrPolach]

Wouldnt you like Hannes to wear a make up to make you happy? This is quite a rude statement from you man...

[@MrJdsenior]

YES, Andre! I would very much like to hear the rest of the talk, especially if it is design/analysis related (more in depth tech/physics oriented flow/pressure type stuff, especially for various wing designs, ie. high performance vs. A wing, etc. would be great). I would be interested to hear your take on this presentation (are you an engineer/physicist/scientist or a layman in those fields). Compared to a rigid wing, these things have VERY flat leading edges. I suppose some of that is due to having to accommodate the venting, some maybe for very gentle angle of attack stall, but it seems like one problem it would cause, with the resulting large relatively FLAT area frontal stagnation pressures, is LE collapse, especially at higher speeds. This stuff is fascinating. to me. One thing those upper surface pressure profiles tell me is that if you collapse the last 20% or so of your tip, it shouldn't be much of an issue in terms of lost lift, or dramatic speed increase (big ears demonstrates this, as well, which people often hold to the landing flare in certain conditions) as long as you keep the glider flying straight and level, weight shift, a bit of opposing brake if needed, and it should not be cause for major panic, at least for a beginner or low performance wing with good self reinflation properties (on those ultra high performance super high aspect ratio competition wings, all bets are off, have you watched PROS trying to launch those things? NOT ME buddy! I'm looking at this as an engineer, not having yet flown one YET so I have NO practical experience, which doesn't ALWAYS jive like you think it will with analysis, in fact, to the finest degree it never does. One thing I saw that made some sense the other day was PPM TEST pilots talking about balling up if your wing feels or looks like it is beginning to spin to eliminate, or at least lessen, twisted lines. Makes sense, lowers your moment of inertia about the vertical axis (try spinning someone in a bearinged chair, arms in then arms out, and you will find you can get them spinning faster and more quickly with less force than with arms out-keeps the chute/lines from "leaving you behind" in the spin acceleration. They also said to correct a twist, working BELOW it by pulling apart the lines does NOTHING. They said to pull the lines apart ABOVE the twist, and again, from a dynamics standpoint, that makes sense. I would also think some differential flow technique, such as sticking your arm and leg out on one side might aid in rotating out of the twist, but I'd practice this HIGH, over water with FLOTATION, and a pick up boat crew...ie SIV class, first. It may be a common technique, but I've not seen it, and maybe one of these test pilots should try it out, taking precautions. I know they said some of what is taught in SIV courses at times is DEAD WRONG for getting out of certain situations, and these are the guys that have to get out of them several times a day, possibly, for YEARS.