Japon Ichi, le site de ceux qui aiment le Japon Authentique

J'ai passé une bonne journée en consultant le site d'origami http://www.origami-club.com/
C'est un site en japonais mais très facile de navigation même si vous ne savez pas lire cette langue. Les modèles sont expliqués en schéma classique et en animation ce qui est beaucoup plus rare et plus parlant pour les modèles compliqués.
Il y a même des patterns de papier à imprimer mais faut mieux avoir du papier à origami ou du papier fin.
Bon travail !

Bonjour,

Je me souviens d'un chercheur japonais de l'agence spatiale qui avait eu l'idée d'appliquer l'origami au pliage/dépliage des panneaux solaires de satellites. J'avais à l'époque fait remarquer à mes collègues que l'origami pouvait être extrêmement intéressant dans le cadre de projets spatiaux à fort risque de panne. Idea

En effet, si on regarde bien un engin spatial, quelqu'il soit, beaucoup de choses doivent être pliées puis dépliées (antennes, voilures spécifiques, panneaux, bras articulés, etc...)

Connaitrais-tu par hasard le nom de ce chercheur ? Je crois que malheureusement l'administration japonaise l'a ostracisé...

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Salutations,
JCD.

un vieil homme qui meurt, c'est une bibliothèque qui brûle

Merci Kurisu pour le lien sur l'origami , mais je trouve ces pliages assez difficiles à réaliser ( pour les modèles présentés ). J'en ai vu des superbers qui sont dignes de certaines sculptures !
Quant à la façon d'utiliser ce système de pliage pour le spatial , l'aéronautique, la marine , la montagne ou autre, il me semble avoir lu un article là-dessus et cette utilisation serait possible selon le présentateur de l'émission. Like a Star @ heaven

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Un chant d'oiseau surprend la branche du matin !

Effectivement jcdouet, tu as tres bien fait de le porter a la connaissance de nos amis du site, l'origami qui a longtemps ete un passe-temps d'origine japonaise, a trouve ces dernieres annees un debouche tout a fait inattendu: la recherche spatiale. En effet, comment emporter un maximum de choses dans un volume restreint sans d'ailleurs, que ces choses se "balladent" dans le tube que constitue une fusee ou une navette spatiale. Reponse: en pliant les elements transportes avec methode, jusqu'a l'integration la plus parfaite possible.

Pour qui s'interesserait a l'origami en matiere spatiale, voici un petit article de la BBC qui en dit un peu plus long sur le sujet.

Origami help for tech design
Origami - the Japanese art of folding paper to make models - is being put to a new use - to help engineers design, amongst other things, new telescopes and cars.
Exploiting the study of the way that paper folds, known as computational origami, can reveal both better ways to construct objects and also predict how they will respond to certain pressures.

In practical terms, this is being applied to space telescopes, amongst other things, to crack a long-standing problem - how to fit a bigger lens inside the finite room of a space shuttle.

"There is this application where we wanted a really big telescope, twice the size of Hubble," assistant professor Eric Demaine, of the Massachusetts Institute of Technology, told BBC World Service's Science In Action programme.

"The trouble is that at scale the lens doesn't fit in the space shuttle, as space shuttles are fairly narrow.

"So you take this big lens, you fold it so that occupies some vertical space and less horizontal space, you put it in the shuttle, launch it into space.

"In space there's lots of room, so you can just unfold, and you have your big lens."

Car safety

Artists have been modelling nature in paper for nearly 400 years.

The first paper aeroplane, for example, came from the imagination of Leonardo da Vinci.

Folding a lens is theoretically the same as folding a paper swan
But computational origami is a relatively new study, and is helping to solve problems in many surprising areas.

"Some of the artistic questions in origami - making a structure to give you a certain artistic result - could really be solved, or at least advanced, by treating them as engineering problems and applying the tools of science and engineering," said Robert Lang, the engineering consultant behind Treemaker, considered to be the seminal work in computational origami.

Treemaker allows the user to specify a desired structure, and the computer then works out where to fold the pieces of paper.

In effect, the underlying principles behind folding a lens and folding a paper swan are the same.

As a result, learning how better to fold paper is teaching how to better fold many other things.

In Japan, scientists are using computational origami to design better crumple zones on cars.

Airbag art

Meanwhile a design firm in Germany coming up with more effective ways to design airbags on steering wheels.

"Materials have to behave predictably, reliably," explained Michael LaFosse, of Origamido Studios in the US.

Origami is teaching engineers how a car crumples in a crash
"If you're talking about furling and unfurling a sheet of something, or having a machine accomplish the re-shaping of a flat form - whether it's a ribbon or so forth - you've got to have some kind of practical knowledge about folded things.

"You have to convey to these machines - through numbers and through the engineers - what's going to be done with them."

However, while it is true that machines are increasingly able to model more complex origami shapes, some feel that the computer will never replace the artist.

"The beauty of origami is often something that a computer cannot predict, said Origamido Studio's Richard Alexander.

"There's no way that an artist would ever want to use a computer to design that kind of a composition.

"It's a very free-form, abstract - but yet very realistic - piece of crumpled paper that looks so beautiful.

"It's definitely a work of art on its own."

Source: cliquer ici

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Kore nitte ik'ken rakuchaku !