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Airbus, famille A320, avec "winglets"

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sevrien
Whisky Quebec

Airbus, famille A320, avec "winglets"

Message par sevrien le Jeu 14 Mai 2009 - 0:11

Bonjour / bonsoir , chers tous !

Histoires de "winglets", façon Airbus !

Lien :
http://www.atwonline.com/news/other.html?issueDate=5%2F13%2F2009
Airbus has concluded testing of A320 Blended Winglets developed by Aviation Partners that it launched in December and is "4-6 weeks" from making a decision on whether to proceed with the program, Airbus Executive VP-Programs Tom Williams told media in Hamburg this week (ATWOnline, Dec. 18, 2008). Director Product Marketing-A320 Family Stuart Mann said the manufacturer is "taking time to evaluate what we've learned" and that a conclusion will be reached "in a few weeks time, hopefully. . .the result [of the testing] doesn't exist yet."

Pour le famille A320 d'Airbus, les tests de "blended winglets" sont terminés.
Il fauidrait 4 à 6 semaines pour étudier et évaluer les résultats obtenus. Airbus arrivera à sa / ses conclusion (s) dans quelques semaines encore.
In a statement, he added that winglets are "one of the elements that we are looking at for the future to ensure the A320 family stays competitive."
Regardez la durées de vie prolongée et le regain de valeur résiduelle des B757 et B767, depuis l'arrivée des "winglets" sur ces "airframes" ! Mais, patience ! Attendons de voir les conclusions de l'évaluation précitée !
Later, Mann said the €100 million ($136.1 million) spent on research and development each year will keep Airbus's single-aisle aircraft family relevant for at least the next 10 years and that a next-generation replacement will require "game-changing" technology--meaning a 20% efficiency improvement--to "justify changeover costs" for airlines.

Pour les "change-over costs", ... nous sommes d'accord. Pour le calendrier, cela nous conduira jusque dans le zone de temps où l'on pourra voir les premiers "open rotors" vraiment industrialisables au début de leur industrialisation ! Wink
"The technology isn't available today. We're looking toward the end of the next decade for something like that," he said.
Voilà pour ceux qui ne voulaient pas nous croire !
Elaborating yesterday, Head of Market and Product Strategy Laurent Rouaud said that "anything less than a game-changer would be almost irresponsible" and that a 40% improvement in fuel burn and a double-digit improvement in operating economics are the targets for the "end of the next decade."

Le chiffre se 40% ci-dessus correspond à la valeur situé à mi-chemin entre les 'options' dites "option 30" et "option 50"!
Voir mon post sous les "Open Rotors" : Re: Coup d'envoi pour ce topic.

du ven 17 Avr, 2009, à 13h39.
In January, Airbus introduced improvements on the aircraft family that it said result in a 1% cruise drag reduction. Those include redesigns of the surge tank inlet, belly fairing and engine pylon.

by Brian Straus

A noter & à suivre !

Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Mer 18 Nov 2009 - 8:43

Bonjour à tous

Depuis ce WE les winglets sont officiellement adoptés par airbus sur l'A320 (cf. fil de cette famille)

Outre les réactions de Leahy qui indique que les sharklets donnent des coup de vieux aux winglets...

Voici celle de Boeing via Tinseth

http://www.flightglobal.com/articles/2009/11/18/335048/dubai-09-boeings-tinseth-welcomes-airbus-to-winget.html



Dubai 09: Boeing's Tinseth welcomes Airbus to winget club
By Jon Ostrower

Boeing's vice-president of marketing Randy Tinseth has welcomed Airbus to the winglets club with a question. "Why has it taken so long?" he asks.

Airbus announced on Sunday at the show that it would offer winglets for its A320 family aircraft starting with an order from Air New Zealand in 2012 that would improve fuel burn by 3.5%.

Tinseth claimed that depending on the model, the 737 Next Generation aircraft has a 3-7% per seat fuel burn advantage over the A320 family aircraft and adds that Airbus is "trying to claw a little bit back with their new winglets".

Boeing first introduced winglets on its Boeing Business Jet in 1998 and commercially in 2001.

Airbus claims that its new "sharklet" A320 winglets will best Boeing's 737-800 in relative fuel burn by about 9%.


Qui fait mieux que l'autre ?
Vu la répartition du marché, que chaque avion a ses petits avantages sur l'autre... et que donc ça dépend au final de la mission confiée

Bonne journée


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Lun 5 Juil 2010 - 23:00

Bonjour à tous
On connait la source pour être plus anti-airbus
Néanmoins quelques questions intéressante soulevées... en écho aux suspicions actuels sur les winglets des boeing

http://www.fleetbuzzeditorial.com/2010/07/05/airbus-winglets/

Airbus’ ongoing trade studies on the winglet or “sharklet” designed for the A319, A320 and A321 have all but concluded that retrofitting the device may not be feasible or cost effective given that the raft of changes needed to the centre wingbox modifications, front wing spar and pylons. The level of design changes required negate the fuel burn savings identified versus those of new build airplanes that have the strengthened components built-in from the outset during assembly.

On the A319 specifically, retrofitting the winglets/sharklet was described by an one engineer as a “non-starter” given that the outboard wing bending relief required much greater stiffening than first thought to counter the moment arm of the shorter airplane. The jet maker has no plans to incorporate winglets to the A318, either on existing or new build airframes. Airbus had encountered similar issues when trialling previous winglet designs, electing to drop those proposals as weight and stiffening requirements adversely affected the front and rear spars of the A320 wing, including greater torsional forces and stresses on the unstrengthened centre wing box.





Image copyright/owned by FleetBuzz Editorial.com

Airbus had noted at the Dubai Air Show last fall that additional wingbox strengthening would involve another “200kg” weight, however, the reinforcements could be as much as 350kg. Offsetting some of this weight would emerge through ongoing program weight saving, although it is not clear whether the efforts would be enough to maintain the 3.5% fuel burn reduction and still deliver the boost in range.

Airbus states that there would be a range increase of up to 150nm or a corresponding payload increase of half a ton, depending on configurations of each model. On a comparative basis:

  • The 737-700 would still have a 7% range advantage (3440nm) over the A319WE (Winglet Equipped)

  • The 737-800 would still have a 5% range advantage (3115nm) over the A320WE (Winglet Equipped)

  • The 737-900ER* would still have a 15% range advantage (3115nm) over the A321WE (Winglet Equipped)


Winglet equipped A320’s would also incur additional weight penalties for the planned re-engine strategy which Airbus hopes to finalise this year. Qatar Airways had been seen as a prime candidate as launch customer for the A320 re-engine model, however the airline is poised to announce an order for the lacklustre CSeries at the Farnborough Air Show in two weeks time.

One major US-based A320 operator has baulked at Airbus’ plans for both the winglet and re-engine moves claiming that the weights being advertised are so heavy, that the dual-wheel landing gear legs need to be substituted for a four wheel bogey to compensate for the increase in weight as a result of the major wingbox and wing changes needed to fit the Pratt & Whitney PurePower GTF engine.

Despite being lighter, the CFM International LEAP-X engine option would still require significant beefing up of the wingbox, pylon, wing spars to accommodate the engine.

The gap between the fuel burn dynamics on the A320 and 737 families widens next year with the introduction of the CFM56-7BE engine (formally known as the Evolution) which aims to deliver a further 2% fuel consumption improvement (with aerodynamic changes). CFM is also using the CFM56-7BE platform to target further efficiencies with PIP upgrades with a view to attaining another 2% or more cut in fuel burn from the engine alone, however it has no plans to offer the same on the A320 engines as of yet.

While Airbus has opted to concentrate its near-term efforts on integrating the wing tip device for its new build jets, it is “continually looking at ways” to reduce the weights involved in the strengthening of the wingbox and surrounding structures to eke out more aerodynamic efficiencies.

Pénalité en poids insupportable pour les versions actuelles de l'A320... difficile à intégrer dans l'A319 et impossible sur l'A318...

L'article pointe aussi sur la différence de traitement entre les CFM des boeing et des airbus... mais oublie la version V2500 de ce dernier

Bonne soirée


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Beochien
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Beochien le Lun 5 Juil 2010 - 23:54

Salut Poncho !
Eh! tu ne payes pas le papier, dans ton post !

A rapprocher de cet article sorti récemment !
Virgin ne sent pas le rétrofit (Supposé sans renforts) et avec un peu de raison !
Pour les Sharklets, sur du neuf, c'est OK pour Virgin !

Pour ce qui est des affirmations de Fleetbuzz, côté poids, c'est trés mal étayé , limite bashing, et on ne sait pas trop ce qui concerne les Sharklets, pourquoi les pylônes, etc !

Seul PB qui m'inquiète pour Airbus ... vont ils toucher 2 fois à l'aile, ou tout régler d'un seul coup, pour ne pas y revenir pour les re-motorisations ??

Côté moteur, le discours Fleetbuzz, ça ne vaut pas bien cher non plus !
Les estimations poids, des re-motorisations, je les suis mal depuis le début ... tout le monde est ou sera plus léger côté moteur, hors nacelles, du moins !
Les sur-poids pourront éventuellement venir des nacelles, des pylônes, et des renforts d'aile, PB surtout induits par les déplacements des centres de poussée !
Avec un point qui peut compliquer ... les différences de centrages, entre LeapX et GTF !
J'ai beaucoup cherché des indications sérieuses, côté poids réel des re-motorisations, depuis 1 mois ... nope !

Côté A320 Sur que CFM ne fera plus trop d'efforts s'ils sont sûrs de remotoriser ... , et ils doivent être sûrs !
Et certain que IAE pourra apporter 5-6 % avec le V2500, s'ils en ont envie, RR et P&W, vu que Sévrien en promettait 12 (Sic et Ouaf) sur le coin de la table, on divise par 2 pour être proche de la vérité !

---------------- L'Avis de Virgin US sur Flightglobal --------------

http://www.flightglobal.com/articles/2010/07/02/344013/sharklets-capture-virgin-americas-interest.html

Extrait :

Sharklets capture Virgin America's interest
By Dan Webb

Management at Virgin America believes Airbus A320s equipped with sharklets could be ideal for some of the transcontinental routes in its US network.

Airbus launched the wingtip devices, which will become available on the A320 family from 2012, at the Dubai air show in November 2009. Finnair recently concluded a deal with Airbus to launch the sharklet for the A321.

"We're certainly interested in the A320 with sharklets," Virgin America CEO David Cush recently told ATI on a flight celebrating the launch of the airline's first international service to Toronto. He explains that not only do they improve fuel burn but also add "some range and performance which is very helpful in the winter flying from the East Coast to California".

Cush expects Virgin America to add sharklets to its aircraft "as soon as they're available".

But Virgin America has no immediate interest in retrofitting its current fleet of 28 Airbus narrowbodies with sharklets if Airbus decides to offer customers that option. Cush says the fuel savings for the retrofitted aircraft, "would certainly be less than the 3% they're offering on the factory install".

Since a number of the carrier's aircraft start coming off lease in 2016, the investment is not worthwhile. "Basically as those aircraft come off lease we can replace them with aircraft with sharklets," Cush says.

"The sharklets do put a lot of additional stress on the wing, and I would just feel more comfortable from a long-term maintenance perspective having the strengthening on the wing that Airbus is going to do as they put the sharklets on at the factory."

JPRS

Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Mar 6 Juil 2010 - 8:51

Non je ne paie pas le papier Wink

Ce qui est sûr c'est que les winglets en retrofit posent réellement des questions chez Airbus et Boeing...


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Mar 21 Juin 2011 - 14:46

Bonjour à tous

Petite info intéressante


Airbus is finally granting JetBlue's wishes for a winglet retrofit programme, and is working with the airline to become a launch customer to retrofit its existing A320 fleet. JetBlue's A320 deliveries from 2013 will feature sharklets first unveiled by Airbus in 2008.
JetBlue has not yet selected an engine for its A320neo aircraft, but all its existing narrowbodies are powered by the V2500. Deliveries of the A320neo are scheduled to begin once the carrier accepts delivery of all 52 A320 family aircraft from its existing orderbook.

Airbus lance discrètement un programme de retrofit winglets sur A320 (à partir de quel MSN ?) avec Jetblue en partenaire privilégié
Dans le délicat package permettant à Airbus de conserver un max de commande d'A320 "classique" c'est probablement très important


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Beochien
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Beochien le Mar 21 Juin 2011 - 15:31

Merci Poncho !

C'est parfaitement dans la culture des cies US, de passer leur vie à rétrofitter les avions dans tous les sens !
Ils ont des MRO super bricoleurs, une vraie culture aero, des meccanos bien formés, et toute la sous traitance certifiée imaginable sous la main à bon prix , et je suppose qu'ils ont des contacts directs avec la FAA !
Donc, si Airbus donne les clefs ... c'est en avant !

On verra un jour un retrofit NEO avec les moteurs, au moins pour les CFMI à mon avis !
QQ renforts, qq limitations, et en avant ...

JPRS

aeroduO5
Whisky Quebec

Re: Airbus, famille A320, avec "winglets"

Message par aeroduO5 le Mar 21 Juin 2011 - 19:32

C'est surtout que les compagnies US ont de vieux avions et n'ont pas l'argent pour tout renouveler.
Toutes les autres compagnies majors ont assez de moyens pour changer de machines au bout de 20 ans.

Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Ven 24 Juin 2011 - 23:44

Bonsoir, quelques données et qq questions sur le retrofit des Winglets sur les A320

http://www.flightglobal.com/articles/2011/06/24/358802/jetblue-awaits-further-details-a320-winglet-retrofit.html

[/quote]
While JetBlue Airways management is expecting a "fairly short" payback on its investment in a new Airbus A320 winglet retrofit programme, the carrier does not know which winglet solution will be installed on its A320 aircraft.
Executives said the carrier's investment in winglet retrofits for its fleet of Airbus A320s will have "a fairly short payback period".
Based on "today's fuel prices" the company estimated recouping the investment within a "two-year timeframe" during a conference call outlining the carrier's fleet moves announced on 21 June.
JetBlue later told Air Transport Intelligence it does "not have the final numbers" in terms of the fuel burn improvement for the retrofit programme, but the carrier is expecting "similar" improvements to the sharklets that will be installed on its new-build A320-family aircraft.
"All of our A320 and A321 deliveries beginning in 2013 will have sharklets, improving our fuel efficiency by roughly 3%", said Ed Barnes, JetBlue's CFO.
It was also revealed during the call that the retrofits are "expected to commence sometime in 2013" though there is uncertainty if Airbus has "certification for the final specs yet".
Beyond the start date for retrofits and some fuel efficiency estimates, details of the retrofit fit plan are vague. JetBlue could not provide "specific numbers" about the length of the project. The New York-based carrier is still awaiting "slightly more information from Airbus on exactly what the final solution is, and what the availability of the kits will be".
JetBlue has "been very active on retrofitting the A320 [with winglets], including providing test aircraft. We plan to do the same for even the sharklet to see if that's the right retrofit", said CEO Dave Barger.
Last year a JetBlue A320 completed a test with Aviation Partners winglets. Asked if Aviation Partners was involved in the project, JetBlue stated: "It is our understanding that they are still in discussions with Airbus".
While an exact solution has yet to be determined, according to JetBlue, the modification "will require some structural reinforcement in the wing root area".
The carrier also said that the wing tip device installed for the retrofit "will be very similar if not identical" to the sharklet modification that will be available on new-build Airbus aircraft

[/quote]

Gains similaires au sharklet, mais avec augmentation de la masse à vide
Prévu pour 2013
On ne sait pas jusqu'à quel MSN Airbus peut remonter


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Mer 20 Juil 2011 - 23:37

Bonjour à tous

Vue cette info ici


Astuteman :
As an aside, I think we're going to find that the newer wing with the winglets also adds some 2t to the fuel capacity - an area where the A320 has been seriously disadvantaged up to now, and one which causes the sometime transcon difficulties. The wingletted A320 classic will be a substantially different beast to the current plane, even without the re-engine
http://www.airliners.net/aviation-forums/general_aviation/read.main/5206296/#menu102

L'histoire de l'aile remaniée en profondeur pour la version sharklets est à suivre... si je comprends bien l'A320 sharklets est susceptible d'emporter +2 t de fioul ?
Intéressant pour des config type 3 classes d'AA ...

A suivre, à confirmer


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Jeu 21 Juil 2011 - 13:31

Cette histoire d'augmentation de la capacité des réservoirs des avions avec Sharklets ... elle est reprise par plusieurs intervenant sur A-net, sans plus de détail ...
Bigre !


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Jeu 21 Juil 2011 - 15:33

Bon en farfouillant :

www.aci-na.org/pittsburgh-centerlines/post-edition/resolveuid/a7e4d805db886cc79ab946e01489416b+A320+sharklets+program+update&hl=fr&gl=fr&pid=bl&srcid=ADGEESjqcQwG9ijCrTucKBt3mqOuxANvvfKUiqMBofDJxY4jLHqX-8Kg7HhBk5fxzMoIkNACH7AQzMWsUF1k047UXwWaKRoj6Huvw50_fAsxdjEq_VhNiQUrXHuOEnMefOb6l9UDLsFp&sig=AHIEtbQah8OVq395qNFrlunCA0gBGyuAzg&pli=1" target="_blank" rel="nofollow">https://docs.google.com/viewer?a=v&q=cache:AI5z6hcXxwEJ:www.aci-na.org/pittsburgh-centerlines/post-edition/resolveuid/a7e4d805db886cc79ab946e01489416b+A320+sharklets+program+update&hl=fr&gl=fr&pid=bl&srcid=ADGEESjqcQwG9ijCrTucKBt3mqOuxANvvfKUiqMBofDJxY4jLHqX-8Kg7HhBk5fxzMoIkNACH7AQzMWsUF1k047UXwWaKRoj6Huvw50_fAsxdjEq_VhNiQUrXHuOEnMefOb6l9UDLsFp&sig=AHIEtbQah8OVq395qNFrlunCA0gBGyuAzg&pli=1


J'ai déjà l'envergure des sharklets :

35.99 m pour rester dans même catégorie pour les manoeuvres au sol : soit +95 cm de chaque côté par rapport à un classic
Les winglets du 737 font 20 cm de moins en envergure...
Les sharklets sont donc les plus grand possibles


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Ven 22 Juil 2011 - 14:00

Encore qq'un qui dit que l'A320 sharklets va avoir des réservoirs un peu plus gros


The wing modifications will also result in the A320 having an increased fuel capacity, that is now one of the reasons the B738-NG flies further then the A320. So that advantage will be "returned" to the A320 with shark-lets (OEO and NEO will receive this performance-upgrade).
http://www.airliners.net/aviation-forums/general_aviation/read.main/5206296/#last

réponse 220

Ca m'intrigue de plus en plus


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aeroduO5
Whisky Quebec

Re: Airbus, famille A320, avec "winglets"

Message par aeroduO5 le Sam 23 Juil 2011 - 13:48

C'est sans doute du à la résistance de l'aile.
Comme elle va être améliorée, je pense qu'on pourra mettre plus de fioul.

Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Sam 23 Juil 2011 - 18:55

Probablement

A priori sur les A320 j'ai cru comprendre que les réservoirs de voilure sont séparés en deux, et que l'extremité joue un petit rôle dans le système de réduction des contraintes aéro sur la structure
L'A321 qui a une aile renforcée n'a pas ce système

Reste à savoir combien de fioul en plus il vont mettre... l'A320 a un vrai déficit par rapport au 737-800ER en capacité de carburant soutable


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Mar 9 Aoû 2011 - 10:05

ça date d'avril 2010 c'est un peu vieux, mais ça reste intéressant




Donc environ
1.5 % de gain à 500 Nm
2.7 % de gain à 1000Nm
3.4 % de gain à 2000Nm

Tout en sachant que l'implémentation des Sharklets sur A320 se fait à OEW constant(gain de poids sur la cellule)


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Mer 10 Aoû 2011 - 15:18

Bon,

Je reviens en arrière sur les Sharklets:

http://www.ainonline.com/news/single-news-page/article/paris-2011-sharklets-are-go-30030/



Airbus has already started to produce the first elements of the “sharklet” wingtips for incorporation on wings for standard A320 aircraft that are expected to enter service in about 18 months’ time, during the fourth quarter of 2012. It also has begun to convert the original A320 (MSN 0001), including installation of flight-test instruments, to act as a test bed. Sharklets will then be introduced progressively during 2013 on other members of the single-aisle family in the following order: A319, A321, A318.
Introduction of sharklets will improve A320 takeoff performance in terms of payload by approximately 6,600 pounds, according to Airbus customer chief operating officer John Leahy. This enhancement is seen as especially valuable when operating from runways with obstacle-clearance and secondary-segment climb limitations. Leahy cited airports such as Canberra, Chicago (Midway), Kathmandu and Quito as having such considerations for A320 operators.
Alternatively, carriers might wish to use the new aerodynamic equipment to increase their range of operations through the sharklets’ claimed higher fuel efficiency. Leahy said block fuel usage could improve by more than 3.5 percent when compared with a current A320 fitted with standard wingtip fences. By April this year, Airbus had announced eight sharklet customers: Air Arabia, Air New Zealand, lessors Air Lease and Avalon, Finnair, LanChile, Thomas Cook and Virgin America.
The new wingtips are said to provide lower fuel burn and emissions; improved payload/range capability, takeoff, climb and cruise performance; and enhanced aircraft value. Flight testing of the units on A320 MSN001 are scheduled to begin in late 2011 followed in the first quarter of next year by delivery of the first new wing for final assembly on the production line. Airbus programs executive vice president Tom Williams said 2012 will see production of a significant number of sharklet-ready A320 wings. “It will be a very quick ramp-up,” he said.
A320 wing changes to accommodate sharklets include a rebuilding of Rib 27, a move Williams characterized as a “very neat solution” that will allow the new tip to be plugged into the end of the wing. Sharklets can be fitted in a one-day shop visit and will be removable.
Williams also said there is no requirement for fundamental redesign of the structure or the low-speed flight controls. There will be no change to materials and the wing spars will “look very much like they do now.” Because sharkletted A320s will operate at increased maximum takeoff weights, skin panels will be re-gauged over the entire wing span for a 1.3-percent higher static load. The panel gauge also will be changed to accommodate a 3-percent higher fatigue load over most of the wing outboard of the engine.
Higher maximum takeoff and landing weights will require local gear-rib and spar reinforcement, alongside local reinforcement of engine-pylon attachments with adapted pylon-system interfaces. The outer wing will be reinforced to take onto account higher bending yaw and torque forces; the center wingbox also will be reinforced. A weight-reduction program is being conducted in an effort to ensure that it will not be possible to differentiate between a 2010 A320 and a 2012 example with the modified wing


plus d'info donc
Et confirmation que les sharlets sont retroffitable aux avions sortant des chaines à partir de l'année prochaine à priori
Et que ceux qui n'ont pas pris les Sharklets auront le droit à une baisse gratuite du poids à vide


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Jeu 11 Aoû 2011 - 9:32

J'ai un doute là

Est-ce que le poids à vide va rester constant entre un A320 2010 et un A320 2012 ou entre A320 2010 et un A320 sharklets 2012 ?
On parle quand même d'une augmentation du MTOW qui pourrait bénéficier même aux version sans Sharklets (mais est-ce que l'avion va se vendre sans ?)



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Beochien
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Beochien le Jeu 11 Aoû 2011 - 11:16

Je me demande même si Airbus le sait lui même !
Tout est incroyablement mélangé, entre réductions de poids sur la cellule, les ailes et leurs influences diverses côté NEO !
Une chatte n'y reconnaîtrait pas ses petits ...
Et je crois que l'écran de fumée arrange bien Airbus, pour distiller des promesses pouvant changer d'un modèle et d'un mois à l'autre !
Patience et attendre, on n'a aucune chance d'y comprendre qq chose today !

C'EST LA VOLONTE D'AIRBUS !
Ca les arrange de maintenir un brouillard total à l'attention de Boeing !
Pas étonnant que personne n'y comprenne rien, c'est fait exprés !

JPRS

Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Jeu 11 Aoû 2011 - 11:27

Oui mais je suis curieux


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Lun 12 Sep 2011 - 13:53

Bonjour à tous

Juste un petit point de certification
Les capacités actuelles max certifiées par avion :
A318 : 136 PAX
A319 : 160 PAX (145 PAX en standard, 156 en config Easy jet)
A320 : 180 PAX (config EasyJet et Air Asia)
A321 : 220 PAX (5 PNC pour 201PAX et au delà, thomas cook : 220 PAX, Monarch : 214 PAX)

Pour comparaison :
737-600 : 149 PAX
737-700 : 150 PAX (SWA : 137 PAx)
737-800 : 189 PAX (Ryan Air : 189 PAX)
737-900 : 189 PAX
737-900ER : 220 PAX (Spice jet, Lion Air : 212 PAX)





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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Jeu 13 Oct 2011 - 17:47

bonsoir
QQ petits retards pour l'installation des sharklets sur MSN001....
installation plus longue de prévue
Pas d'incidence sur le planning global
Le premier vol reste prévu cette année

http://www.aviationweek.com/aw/blogs/commercial_aviation/ThingsWithWings/index.jsp?plckController=Blog&plckScript=blogScript&plckElementId=blogDest&plckBlogPage=BlogViewPost&plckPostId=Blog:7a78f54e-b3dd-4fa6-ae6e-dff2ffd7bdbbPost:3b7ad055-cfbb-4286-81e9-2dfdd2968ee7&utm_source=twitterfeed&utm_medium=twitter


Meanwhile, Williams also promises the first flight of the A320 MSN1 with winglets still this year. The first flight has been delayed, slightly, as it is taking Airbus longer to install the devices it calls "Sharklets." But flight testing has been adjusted to assure the certification and first flight schedule will hold, Williams in


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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Lun 21 Nov 2011 - 13:59



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Poncho (Admin)
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Poncho (Admin) le Lun 21 Nov 2011 - 14:52

Et avec un texte :

http://www.flightglobal.com/news/articles/airbus-rolls-out-test-a320-with-sharklets-installed-365108/


Airbus has rolled out its A320 test aircraft following the fitting of 'sharklet' wing-tips, which will be an option on new-build aircraft and standard on the re-engined A320neo.

The test aircraft, MSN1, will undergo flight-testing "in the coming weeks", said the airframer.

Sharklets, which replace the A320's wing fences, will reduce fuel-burn on the type by up to 3.5% on longer sectors of around 3,000nm (5,560km), Airbus claims.

The airframer also expects the sharklets - each of which is 2.5m (8.2ft) tall - to improve take-off performance by up to 3t.

This would provide the A320 with a higher available take-off weight from runways subject to obstacle limitations.


© Airbus

MSN1 will be used to assess the performance of the modification, while Airbus will begin building wings next year which are capable of supporting the new tip.

Installation of the sharklet requires inboard and outboard reinforcement to handle different loading, as well as changes to outer wing ribs to accommodate the structure.

Several carriers have already signed to take the sharklets, including Air New Zealand, Air Arabia, Finnair and LAN.



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Beochien
Whisky Charlie

Re: Airbus, famille A320, avec "winglets"

Message par Beochien le Dim 27 Nov 2011 - 20:14

Bonjour !

Jon 0strower n'aura pas fait le voyage à Toulouse, pour rien ... beaucoup d'infos sur le passage aux Sharklets" du A320 et NEO ! (A défaut d'infos sur le A350!)

Airbus va trés vite pour le A320, "Sharklets", même si les essais ont un peu de retard !

Noter :
-Des modifcations de l'aile en série dés le début de 2012, même pour les "Wingtip Fences" !
-Le 320 modifié est "Weight neutral" des écos de poids équivalentes à l'acroissement sur tout l'avion !
Et ce que j'espérais, les renforts sont déjà prévus pour supporter les prochains moteurs ... ouf !
L'accroissement du MTOW : 2 tonnes, au passage, ok, c'était annoncé !
Noter que le rétrofit pour les essais est complexe, sur le vieux MSN01, ce qui explique le léger retard !

Bien l'article / (Large extrait et le lien de FlightBlogger)

http://www.flightglobal.com/blogs/flightblogger/2011/11/airbus-looks-to-sharklet-struc.html

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Of the ribs in the wing of an A320, Rib 27, the outer-most, has been fully redesigned to offer compatibility with the current wing fences and the option to fit the Sharklet at a later date. All of the ribs outboard of Rib 8 have been strengthened after Airbus re-studied the higher bending yaw and torque loads that would come from the
installation of the new wingtip treatment.



Further, Airbus is also strengthening the aircraft's center wing box in some local areas, though rather than make second modification for the updates to the structure for the A320neo starting in 2015, the airframer will add "all the modifications in pretty much one pass" on the first Sharklet-equipped A320, says Tom Williams, Airbus executive vice president programmes.


"So we think we'll have it done in a way that will take care of both Sharklet and Neo without
having to have two iterations of it," he adds of the incremental approach to the new variant's development.

Additional inboard rib and spar reinforcement for the added maximum takeoff weight and new CFM Leap-1A and Pratt & Whitney PW1100G engines will be incorporated when the A320neo goes into production well ahead of the October 2015 service entry with Qatar Airways.


The
strengthened Sharklet center wing box will mean higher structural
weight in those areas, though Williams says an airframe-wide
weight-reduction plan of around 440lbs (200kgs) will make the
reinforcement weight neutral.


"If you take a delivery of an aircraft last year (2010) and an aircraft next year (2012)," Williams said in April,
"You'll not be able to tell the difference between fuel burn and performance of those aircraft; whether they're Sharklet-ready aircraft or not. So, I think it's a pretty good incorporation of some very sound engineering work."


The new Sharklet-ready wings are expected to enter the production system in early 2012 and will be
delivered to customers with wingtip fences before being modified with the new winglets following their EASA certification late next year.

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JPRS

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Re: Airbus, famille A320, avec "winglets"

Message par Contenu sponsorisé Aujourd'hui à 0:08


    La date/heure actuelle est Sam 10 Déc 2016 - 0:08