par Beochien Sam 25 Aoû 2012 - 0:24
Bonjour !
Airbus indique les séquences d'améliorations des A350 !
Des séquences trés coutes .... le 5ème et le 17ème des A350, incorporeront des modifications !
On peut penser que pour le 5ème, c'esr déjà fait !
Et que pour le 18 ème c'est lancé !
Le Weight Ripoux est donc lancé !
Ca veut surtout dire qu'ils ont fait le tour de la question avec ce qu'ils ont sous la main, ce qui pour mois est un trés bon signe !
Beaucoup de pièces de la cabine, celà dû a des changements dans le fuselage, les sytèmes d'attachement et l'AC ...les plus cités !
Bien, cette multitude "Brackets", beaucoup sous traités par Spirit, étaient déjà le casse tête d'Airbus ... ils sont arrivés tard, donc les modifs sont parties tard aussi !
Bon, les fournisseurs vont un peu souffrir ... ben ce n'est pas nouveau, vu les % de parts sous traitées !
Allez, 3 pages à lire , perso je trouve la siyuation un peu dramatisée, si la chasse au poids est effecive dés le 18 eme A350, c'est plutôt bravo, Airbus n'allait quand même pas attendre 1 an pour avoir MSN001 aux spec's !
-------------- De Aviation Week, Jens Flottau, des extraits et le lien -----------
http://www.aviationweek.com/Article.aspx?id=/article-xml/AW_08_27_2012_p22-488795.xml&p=1
Airbus plans to introduce the A350 in several batches, each of which
will incorporate changes, with the most significant modifications made
in the transition from Batch 2 to 3. The changes affect parts and
components throughout the aircraft, and suppliers have been given
detailed design targets that specify the amount of weight reduction
needed, among other things.
Batch 1 will include all the
flight-test aircraft and early produc-tion versions, including MSN4,
industry officials say. The first round of relatively minor design
changes will be incorporated with MSN5. The more fundamental upgrade
will happen with MSN17, say two executives with knowledge of the matter.
Airbus has not revealed the exact points of transition, but Andreas
Fehring, A350 senior vice president, head of fuselage and cabin,
confirms that Airbus has decided to incorporate the A350 changes by
batches.
The A350's cabin is one major area in which upgrades are
going to be made. From MSN17 on, 40% of cabin parts will be changed,
industry officials say. Airbus neither confirms nor denies that figure.
The redesign includes cabin bracketing—the way the interior is attached
to the fuselage—and the air-conditioning system, as well as other
interior components.
Other areas that will see significant modification are structural and wing components.
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Details of Airbus's planned A350 production ramp-up are meanwhile
emerging. Industry officials say the manufacturer plans to mate the
fuselages and wings of four aircraft in 2012. It aims to do the mating
for 12 aircraft in 2013, 24 in 2014 and 42 in 2015. Those numbers do not
represent how many aircraft will be delivered in a particular year—the
first A350 is not due for delivery until the second half of 2014. But it
is an indication of the kind of production growth that is foreseen.
Airbus declined to comment on the figures.
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There are differing views about what has caused the problem and how
serious it is. One industry executive says decisions on crucial changes
and detailed design were made too late to be introduced with the initial
aircraft. “They have missed the slot,” he says. In light of the
detailed requirements that have been communicated to suppliers in the
past few weeks, the aim of the whole initiative appears to be clear to
him: “Getting down weight and cost.”
Component weight is to be
reduced by up to 5% in some cases, but there seems to be a wide range of
targets depending on the part.
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JPRS