Nouveaux Matériaux Légers pour Airframers
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Viking
Inscrit le 18/10/2006 |
# 21 juillet 2008 06:43 | |
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un truc qui me chagrine, quand on lit thermoplastic, il faut comprendre plastique et non thermoplastique ou bien? _________________ Merci de ne pas me citer ailleurs.... |
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Viking
Inscrit le 18/10/2006 |
# 23 juillet 2008 12:55 | |
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http://www.sport24.com/auto-moto/formul ... sDiaporama rupture ductile ou fragile??? _________________ Merci de ne pas me citer ailleurs.... |
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Beochien
Inscrit le 13/02/2007 |
# 14 août 2008 21:39 | |
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La métallurgie spéciale Aérospace va bien !! Le cdes ne manquent pas ! 10 milliards de $ !! pour 2008 ! ------------------Extraits------------------ http://www.purchasing.com/index.asp?lay ... p;nid=4018 Demand for aerospace metals continues to fly above the turbulence A multiyear upswing in demand is expected as airlines worldwide build capacity of fuel-efficient planes to accommodate future airline traffic growth. By Tom Stundza -- Purchasing, 8/14/2008 Even as airlines struggle with the skyrocketing cost of jet fuel, the future outlook for new aircraft remains strong because of projected high demand for new-generation fuel-efficient planes. With older, less-fuel efficient planes unprofitable to operate, such jetliner models as the MD80 and the A320 are coming out of service faster than expected. So, the mills, processors and service centers who supply aerospace-grade specialty metals expect purchasing to remain elevated for many months ahead. In fact, superalloys use in the U.S. already is setting records. Still, "aerospace is a far-horizon business, and it has a positive long-term outlook even with the current delays in the Boeing 787 and Airbus A380 new-model introductions," reports a buyer in a recent Purchasing survey. Tinseth of Boeing notes that, as a result of strong orders the last three years, almost 9,000 new airplanes already are in the industry's backlog. This will keep aerospace-grade metals tight, Mraz says, pointing out that "metal sold today won't become a part bolted onto a new plane for 16–18 months." He and other market insiders confirm financial reports from Allegheny Technologies that purchasing of titanium and titanium alloys, nickel-based alloys and superalloys and vacuum melted specialty alloys is increasing by at least 7% this year to $10 billion after rising 14% in 2007 and 22.5% in 2006. "Our industry, which makes fixtures and gauges for the aerospace industry, is doing quite well despite the current indicators of a near-recession nationally," says Sandi Johnston, purchasing manager at North Hartland Tool Corp. in Vermont. The demand surge for aerospace metals is supported by the fact these metals also are used to make products for the defense, electrical energy, oil and gas, and chemical process industries. "Our sector of aerospace is progressing well and meeting our marketing forecasts," says John Marshall, senior contracts administrator at inertial sensors and systems manufacture for Systron Donner Inertial in Walnut Creek, Calif., a defense contractor subsidiary of Schneider Electric. JPRS Paris (Message édité par Beochien le 14/08/2008 21h40) _________________ JPRS |
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Beochien
Inscrit le 13/02/2007 |
# 14 août 2008 21:46 | |
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Et Airbus continue à sécuriser ses appros en titane pour le A350 !! ----------------L'Article-------------------- http://www.purchasing.com/article/CA658 ... ryid=48389 Russian titanium firm to supply $4 billion in titanium products to Airbus By Tom Stundza -- Purchasing, 8/14/2008 Russian titanium maker VSMPO-AVISMA has agreed to supply of $4 billion worth titanium products to Airbus and its components subcontractors through 2020. Airbus has been buying titanium from VSMPO-AVISMA since the early 1990s and the new agreement extends the number of value-added products purchased from the Russian firm. The supply pact covers the supply of titanium round and flat mill products plus die forgings parts for all existing Airbus aircraft, including new programs such as the A350XWB. VSMPO-AVISMA, which claims to be the world's largest titanium producer, also may machine titanium products for Airbus to develop a vertically integrated titanium supply chain extending from raw materials to finished products. VSMPO-AVISMA has been supplying titanium to Chicago-based Boeing since 1987. Last year, the two firms established joint venture Ural Boeing Manufacturing in Russia to machine titanium forgings and press parts for the Boeing 787 Dreamliner. JPRS Paris _________________ JPRS |
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Beochien
Inscrit le 13/02/2007 |
# 23 août 2008 15:18 | |
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Tiens, en parlant de"Tout 2lectrique " Il pointe le bout de son nez dansles super ultra légers !! http://www.avweb.com/avwebflash/news/el ... MP=OTC-RSS The Coming Electric Airplane Revolution Email this article |Print this article By Glenn Pew, Contributing Editor, Video Editor The Coming Electric Airplane Revolution Randall Fishman's public AirVenture Oshkosh 2008 demonstration (see AVweb and Kitplanes video interview, here) of his virtually silent, nearly vibration-free and fillup-less single place ElectraFlyer-C (capable of flying for an hour and a half on 75 cents worth of lithium-polymer battery power) is just the tip of the iceberg. Fishman is seeking partnership with a suitable airframe manufacturer of an existing light efficient two-place aircraft in which he can install a larger electric motor. Meanwhile, Greg Cole (previously chief engineer of research and development at Lancair), who recently created the 36-foot span, 155-pound carbon composite Sparrowhawk sailplane (soon available for about $73,000 with electric power), is working toward a two-place "Goshawk" electric-powered sport aircraft that aims to cruise at up to 115 knots on 21 (electric) horsepower for about an hour. Cole and Fishman are both American pioneers funding their own projects, but overseas, the European Union has contributed about 20 percent of a reported $2.3 million applied to the development of Slovenian aircraft manufacturer Pipistrel's two-place side-by-side self-launch electric motorglider. The $133,000 Taurus Electro is on pace to begin customer deliveries later this year and though the Electro carries its powerplant on a fuselage mounted retracting arm, Pipistrel has announced an electric motor "constructed for continuous operation." For all these efforts one universal unknown remains: how the FAA's Light Sport Aircraft rules will adapt to address electric propulsion. Current FAA regulations do not account for aircraft with electric motors in the LSA category, but the EAA in late April petitioned the FAA to change that. EAA filed a request with the FAA for regulatory exemptions that "would allow the use of electric motors in ultralight and light sport aircraft," according to EAA. Fishman and Cole are both proceeding under the funding constraints of their own wallets, and it seems likely Pipistrel will beat them to the punch, but it remains to be seen whether Pipistrel's product will appeal to buyers outside of the sailplane market. For all comers, yet-to-be-drafted regulations are among the many potential obstacles. As those regulations and technology take their course, the rest of us will be watching. JPRS Paris _________________ JPRS |
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Beochien
Inscrit le 13/02/2007 |
# 23 août 2008 15:30 | |
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Bonjour Airbus investi dans des équipements "Curing" des composites :! Pas trop vu ce qu'ils pouvaient proposer dans leur catalogue ?? Wiking saura peut être ?? http://www.flightglobal.com/articles/20 ... oling.html Et http://www.coastcomposites.com/files/Fi ... %204pp.pdf US firm Coast Composites to supply A350 tooling By David Kaminski-Morrow Airbus has signed a letter of intent with a US division of UK firm Hampson Industries covering the supply of wing and fuselage curing tools for the A350 XWB programme. The agreement has been reached with California-based Coast Composites, which specialises in creating tooling systems for composite airframe structures. Coast Composites is involved with several civil and military aircraft programmes including the Airbus A380 and Boeing 787. Hampson Industries values the agreement detailed in the letter of intent at more than $23 million, adding that the deal covers only the first set of tools, for which delivery will start in the current financial year. It expects to derive another $60 million from further deliveries of tools over the next four years. JPRS Paris _________________ JPRS |
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Beochien
Inscrit le 13/02/2007 |
# 23 août 2008 16:14 | |
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Une intéressante publication de EADS sur les composites et leur évolution, dans l'intégration aux avions ! http://www.eads.net/1024/en/madebyeads/ ... sites.html ------------------- La Fin de l'article -------------- Composites research Research into composites technologies currently being conducted in the EADS divisions and by the EADS Innovation Works includes cost-reducing manufacturing methods that do not require the use of an autoclave and which increase the automation of manufacturing processes such as automated tape lay-up, robotic fibre placement, resin transfer moulding and resin film infusion techniques. A considerable effort is being made to develop more advanced design methods, sophisticated structure analysis methods and digital simulation techniques and to advance the state-of-the-art in non-destructive testing and inspection, structural health monitoring, quick repair and lightning-strike protection technologies. The development and implementation of smart structure technologies holds the promise of further weight reductions and a less frequent need for maintenance. The research programmes are in full swing, so that future aircraft structures will see the step-by-step introduction of self-adaptive, self-monitoring and “self-healing” characteristics. Tomorrow’s smart structures are also likely to include nanotechnology, which may lead not only to significantly improved material properties in terms of thermal or electrical conductivity and fire resistance, but also enable the production of multifunctional materials with sensor functions and structural elements that are capable of changing their dimensions, shape or function on command (“morphing”). _________________ JPRS |
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Beochien
Inscrit le 13/02/2007 |
# 23 août 2008 16:30 | |
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Pour aprés demain !! (Et c'est de 2007  Memory shape polymer !! http://thefutureofthings.com/news/18/ad ... rials.html _________________ JPRS |
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Beochien
Inscrit le 13/02/2007 |
# 23 août 2008 16:33 | |
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Et le Self repairing, ou healing des plastocs !! De Bristol University ! Des bons dans la recherche aéronautique ! http://thefutureofthings.com/news/1289/ ... craft.html _________________ JPRS |
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alain57
Inscrit le 08/03/2008 |
# 8 septembre 2008 19:09 | |
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petit article interessant concernant l'assenblage des éléments d'avion. gain de poids en perspective... technologie deja utilisé dans d'autres domaines, (automobiles etc) loin des contraintes de l'aviation.... http://www.techno-science.net/?onglet=n ... ;news=5772 |
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maitrefollace
Inscrit le 03/06/2007 |
# 8 septembre 2008 21:41 | |
| Sur A318 le procédé est en partie utilisé sur les tronçons? qui peut développer? | ||
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Beochien
Inscrit le 13/02/2007 |
# 11 septembre 2008 13:14 | |
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Des nouvelles du Titane Russe ! ---------------- Extraits --------------- http://www.leblogfinance.com/2008/08/vs ... ma-ti.html VSMPO-AVISMA (titane) : la meilleure compagnie russe Vsmpoavismamaptitanium_4 Cqfd ? Alors que nous évoquions ici-même il y a quelques heures, que la Russie pouvait user du chantage du titane – comme elle l’a déjà fait – pour "amadouer" les Etats-Unis via Boeing - et l’Union Européenne via EADS/Airbus, Moscou ne semble pas y aller par 4 chemins. La firme VSPMO-AVISMA qui exploite le précieux titane vient en effet d’être honorée du brillant titre de "meilleure compagnie russe" … Se référant à l'avis du Comité d'Experts du Grand prix National de « Leader de l'Economie russe », la corporation VSMPO-AVISMA Corporation s'est conformé avec succès à tous les critères nécessaires en vue d'être qualifiée "The Best Russian Company". --------------------- et ! Quand Boeing défend la Russie ... et son titane "Selon nos estimations, le marché russe de l'aviation civile est l'un des plus importants, avec un chiffre d'affaires de près de 10 milliards de dollars. Au cours des dix prochaines années, la Russie aura besoin d'environ 1.060 appareils", a récemment déclaré quant à lui le directeur de la société Boeing, Russia&CIS, Sergueï Kravtchenko. D'après lui, les informations selon lesquelles Boeing pourrait réduire sa présence sur le marché russe sont erronées. "C'est faux. Nous avons signé avec Boeing un plan de coopération qui sera valable pendant plusieurs décennies et sera systématiquement appliqué. Sans les ingénieurs, les technologies, le titane et les composantes russes, le Boeing-787 Dreamliner n'aurait jamais vu le jour", a-t-il ajouté. -------------- et plus ancien ! Le titane représente 15% du prix de revient du nouvel avion Boeing-B787 Dreamliner. JPRS Paris _________________ JPRS |
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TRIM2
Inscrit le 29/04/2007 |
# 11 septembre 2008 13:49 | |
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Bonjour à tous Pour Béochien : Ne me dites pas que vous ignorez les 'règles ' du libéralisme ?Cordialement TRIM2 |
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Beochien
Inscrit le 13/02/2007 |
# 11 septembre 2008 14:09 | |
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Salut Trim ! Ben ... moi je n'ai écrit que la 1 ere Ligne !  Pour le reste le libéralisme vu par les Russes, pour le Pétrole, comme pour le Titane , se transforme assez souvent en un instrument de chantage Politico-Economique ! Et à la limite, un contrat signé avec l'ancienne URSS communiste, avait plus de chances d'être honoré qu'avec la nouvelle Russie Capitaliste ! JPRS Paris _________________ JPRS |
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alain57
Inscrit le 08/03/2008 |
# 11 septembre 2008 16:49 | |
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la russie actuel n'a de capitaliste que le nom..... elle et dirigé par des clans appartenant au (ex) KGB et la mafia. ils s'entendent bien entre eux pour leurs profits communs. beochien vous avez raison, concernant la deuxieme partie de votre post.....méme si il faut se félicité de la disparition de l'URSS. le peuple continue en grande majorité de souffrir.. |
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