Prandtl - Angel Wing Designs 🤩 Courbes gracieuses pour aile volante pure

  Рет қаралды 3,673

Jivaromodels

Jivaromodels

Жыл бұрын

Les ailes volantes sans dérive ni fuselage ont toujours des lignes très pures. La FVT3 Prandtl d'Angelwing Designs m'a tapé dans l'œil dès que je l'ai vue sur le site du fabricant, et je l'ai aussitôt classée dans la liste des coups de cœur. J'aime beaucoup ce type de kit en bois à construire et à la conception poussée.
Détails de la construction et de l'équipement installé sur cette page :
jivaro-models.org/prandtl_ang...
Or in English here:
jivaro--models-org.translate....
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L'aéromodélisme est une activité créatrice très riche qui ne consiste pas seulement à acheter un kit tout monté chez son détaillant.
Savoir lire ou dessiner un plan, travailler avec toutes sortes d'outils, de produits et matériaux... sont autant d'activités manuelles et intellectuelles.
Se retrouver au grand air et faire prendre l'envol à sa dernière création est toujours un moment intense.
Se concentrer sur son pilotage, peaufiner les réglages, observer les mouvements de la nature et de l'air qui l'enveloppe... tout ceci permet de comprendre le vol et d'atteindre l'osmose : le moment où le pilote et l'avion ne font qu'un.
Le site jivaro-models.org vous propose une lecture au pays de cette aviation miniature. N'hésitez pas à nous rejoindre, en nous soumettant vos articles, si vous vous sentez faire partie de cette famille.
L'aéromodélisme : une passion à partager.
#aile #volante #prandtl #flying, #wing #horten #kit #rc

Пікірлер: 14
@stephanbre
@stephanbre Жыл бұрын
Amazing. I would have expected this model being unstable at least around vertical axis. But it flies. Great job. 👍
@tifosaurus
@tifosaurus Жыл бұрын
Hello! Why did you expect instability around the vertical axis? You have built several Horten wings (call them...Variantes or Martinets ;-) ) and they fly wonderfully! One of your videos persuaded me to build a Variante75 and I am in love with it since then.
@Jivaromodelsvideo
@Jivaromodelsvideo Жыл бұрын
@@tifosaurus The geometry of Horten wings is very different. It is first of all a lot of angle on the leading edge, and an evolutionary twist from 1/3 of the wingspan. For the Prandtl, it is very different. There is little angle at the leading edge and for the trailing edge it is the reverse. There is also important dihedral. Stability is achieved with the evolution of the profiles over the entire span.
@tifosaurus
@tifosaurus Жыл бұрын
@@Jivaromodelsvideo Laurent, theoretically, the Prandtl Lift Distribution is slightly different than the Horten Lift Distribution, but to the eye of a not very experienced onserver both look "bell type". Anyway, in the practical applications, you cannot achieve exactly neither the theoretical Prandtl nor the theoretical Horten lift distributions. Even in the Prandtl wing you fly, the elevons are a little bit raised, already ruining the theoretical distribution. Now, as far as the difference between the Horten and Prandtl wings are considered, the weathercock stability is achieved with the swept wing: even in the Prandtl wing you fly, the small sweep is adequate to provide weathercock stability (so as not to require fins). In a typical Horten, yes, the sweep of the wing is more, but that is not what distinguishes the Prandtl and the Horten wing. Afterall, Albion Bowers and his students have built Prandlt wings with high sweep angles, like the typical Horten wings. The evolution of airfoils has nothing to do with stabilisation in the vertical axis.Also in the Hortens the airfoils were changing from reflexed, at the root, to symmetrical at the tip (like in the Prandtl). In conclusion, not many differences: both Horten and Prandtl designs are finless, swept, highly tapered flying wings, trying to achieve proverse yaw, but both designs achieve excellent stall and spin characteristics.
@stephanbre
@stephanbre Жыл бұрын
@@tifosaurus I just wanted to answer you in Laurents sense, but i see you do not need answer. You know it all.
@marielizysurourcq
@marielizysurourcq Жыл бұрын
J'avoue que je l'avais repérée et adore cette aile
@Jivaromodelsvideo
@Jivaromodelsvideo Жыл бұрын
Un set de déco offert actuellement : www.angelwingdesigns.co.uk/products/fvt3-pre-order?fbclid=IwAR0os4LnMD9zBx4o-uU-3l8fWStflbsv1fBcaV-MP8nnOBYRCUmh7mTkz8A
@luciebloem9150
@luciebloem9150 9 ай бұрын
Bravo !! Plus difficile que de faire voler un drone ça !
@benoite.6416
@benoite.6416 Жыл бұрын
Jolie 😍 Est ce qu'il y aurait moyen d'envisager une petite motorisation ? Cela permettrait de lester utilement le nez!
@YurukKaplu
@YurukKaplu Жыл бұрын
thanks for your effort. Do you think prandtl type gliders have any advantages over conventional gliders and wings or f3k type gliders? As a user, I'm curious about your comments.
@tifosaurus
@tifosaurus Жыл бұрын
Wonderful flying wing! What are your comments regarding dutch roll oscillations? Are they pronounced, or not ?
@Jivaromodelsvideo
@Jivaromodelsvideo Жыл бұрын
Yes, sometimes the Prandtl flies with dutch roll oscillations. If you try to correct the trajectory, it seems to amplify the phenomenon, as if there were lag with the RC. The best is to let go, or to push very lightly on the handle. The wing then resumes its line of flight
@Newbeflyer
@Newbeflyer Жыл бұрын
Nice wing and you worked out the warps, and it's very stable.....where can you purchase the kit. Help if we could read it in English any translating around? .
@Jivaromodelsvideo
@Jivaromodelsvideo Жыл бұрын
Thanks Paul. There are flag on the website for Google translation. Here is the link for English: jivaro--models-org.translate.goog/prandtl_angelwingdesigns/page_prandtl.html?_x_tr_sl=fr&_x_tr_tl=en&_x_tr_hl=fr&_x_tr_pto=nui The kit is available in England: www.angelwingdesigns.co.uk/products/fvt3-pre-order
Aliexpress rc glider 😳 Amazing!!!
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