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Mistubishi MRJ

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Mistubishi MRJ

Message par Invité le Sam 24 Jan 2009 - 17:30

Mistubishi Regional Jet

http://www.mrj-japan.com/

AIDC ( Taïwan ) fournira des becs, volets et carénages ventraux

http://www.mrj-japan.com/pdf/20090122_MitsubishiAircraft_Release_7E.pdf

Taiwan’s AIDC to Help Design and Develop the MRJ Under the terms of its agreement with Mitsubishi Aircraft Corporation, AIDC will be tasked with overseeing the five parts of the MRJ outlined below.

1. Slats (An aileron fit at the leading edge of the main wing serving to increase lift.)
2. Flaps (An aileron fit at the trailing edge of the main wing serving to increase lift.)
3. Belly fairing (Covering for the juncture of the wing and the fuselage.)
4. Rudder (Rotating blade positioned at the rear vertical tail fin.)
5. Elevator (Rotating blade positioned at the rear of the horizontal stabilizer.)

The MRJ will be powered by Pratt & Whitney’s most advanced and highly efficient PurePower™️ PW1000G engine, 1 with other major participating partners including Parker Aerospace (the aircraft's hydraulic system),
Hamilton Sundstrand Corporation (various systems, including electrical power, air management and auxiliary
power units), Rockwell Collins (the flight control computers and avionics), Nabtesco Corporation (the flight
control actuators), Sumitomo Precision Products Co., Ltd., (the landing gear), and Spirit AeroSystems (pylons).

Sur le meme lien, la participation de Spirit AroSystems est explicitée

Mitsubishi Aircraft Corporation has signed a contract with the U.S.-based Spirit AeroSystems, under
which the firm will design and manufacture pylons (engine suspension systems) for the next-generation regional jet, the MRJ (Mitsubishi Regional Jet), which is currently in development.
Pure Power™️ PW1000G engine was formerly known as the Geared Turbofan™️ (GTF) engine.

http://www.janes.com/extracts/extract/jawa/jawaa480.html
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Invité
Invité

Re: Mistubishi MRJ

Message par Invité le Sam 24 Jan 2009 - 23:33

Bonjour,

A part l'intention d'ANA pour 15 + 10 MRJ,
existe-t-il d'autres intentions de commandes ?
http://www.flightglobal.com/articles/2008/03/28/222530/mitsubishi-launches-mrj-programme.html
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Invité

Re: Mistubishi MRJ

Message par Invité le Ven 19 Juin 2009 - 17:06

Des nouvelles du Regional Jet japonais.

Les parties consommation, émissions sonores du GTF sont à relever et basée sur une comparaison avec le CF34-8. Mais où sont les mesures concernant le GTF ! Pour le bilan conso, la fourchette est un peu large...

L'article sur Aviation Week :

Mitsubishi Aircraft Corp., a subsidiary of Mitsubishi Heavy Industries since April, is marching ahead with development of its $40 million, all-composite 86- to 96-seat MRJ90, despite
having only 15 orders and 10 options from All Nippon Airways since March 2008 and slim prospects for landing more orders from cash-strapped regional air carriers in the near future. Undeterred, MAC is moving ahead through the preliminary design review phase with plans to certify and deliver the aircraft by 2013.

Yosuke Takigawa, MAC’s senior vice-president for sales and marketing, said he hopes to capture one third of the estimated 3,000 70- to 90-seat regional jets that will be sold
between 2014 and 2027. Half of those aircraft are expected to be delivered in North America, with another 30% to Europe and most of the remainder to Africa, Asia and the Middle East.

“We’re actively engaged in discussions with customers. I’m very confident we can sell the aircraft,” Takigawa said. A company spokesman commented that MAC is experiencing
higher-than-anticipated visitor traffic at its chalet, indicating “increased interest” in the program, but MAC seems far from announcing more orders.

MAC claims the MRJ90 will offer substantial benefits for the environment, passengers and airline operators. Compared with the current generation of CF34-8 and -10 powered 90-seat Bombardier and Embraer regional jets, the MRJ90 promises 15% to 21% lower block fuel burn per seat mile. Each pound of fuel saved results in about three pounds lower carbon emissions.

This mainly is made possible by its super fuel-efficient 17,000 lbf Pratt & Whitney PW1217G
geared turbofan engines, along with improved wing aerodynamics and reduced fuselage wetted area.

The MRJ90 should be the greenest aircraft in class, having NOx emission 50% below ICAO CAEP 6 standards, along with 70% less carbon monoxide, 85% less hydrocarbons and 90%
less visible smoke.

Improved passenger comfort is a major goal of the MRJ90 program. The cabin cross-section is three inches wider and one inch higher than Embraer’s ERJ 190, the current class leader. This makes possible the use of 18-inch-wide seats on 21-inch centers, plus increased
elbow room in window seats and larger overhead carry-on luggage bins. In addition, MAC has designed and patented new “3D-Net” slim-line passenger chairs that it claims will offer superior seat cushion comfort, along with weight savings and better shock/vibration isolation.

Operators will also experience lower operating costs, mainly a function of decreased fuel burn and lower carbon offset costs. The PW geared turbofan engines also will make the
MRJ90 the quietest aircraft in class, resulting in 17.4 EPNdB margins below ICAO Chapter 4 noise limits.

Three versions of the aircraft are planned. The standard model will fly 870 nmi to 1,200 nmi, depending on passenger load. The MRJ90ER, with 4,000 lb more fuel, will fly 1,400 to 1,730 nmi. A long-range version with about 7,000 lb more fuel than the standard version will have as much as 2,100 nmi of range. Cruise speed is 0.78 Mach and maximum cruise altitude is 39,000 ft.

Partners in the MRJ90 program include PW for the engines, Rockwell Collins for avionics and Hamilton Sundstrand for electrical power, air management and the APU, plus AIDC for
slats, flaps, fuselage belly fairing, rudder and elevators, Parker for the hydraulic system, Spirit Aerosystems for engine pylons, Nabtesco for flight control actuators and Sumitomo for the landing gear.

The MRJ90 faces potential competition from Sukhoi 100-seat class Super Jet 100. Mitsubishi also wants to develop the MRJ70, a shortened 70- to 90-seat version of the MRJ90, if it gets a sufficient number of orders.

Takigawa claims Bombardier’s CSeries regional jets are not direct competitors because they are designed to carry 110 to 130 passengers. But historically, regional air carriers have progressed from smaller airplanes to larger jets, thus dampening enthusiasm for 70- to 90-seat replacement aircraft for CRJs and E-Jets. That doesn’t bode well for either Mitsubishi or Sukhoi, especially in light of the current slump in the airline industry.
http://www.aviationweek.com/aw/generic/story_airshow.jsp?channel=busav&id=news/PMITSU0619.xml&show=paris2009
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jullienaline
Whisky Charlie

Re: Mistubishi MRJ

Message par jullienaline le Mer 9 Sep 2009 - 21:54

Un retard de 3 mois pour le MRJ : la première livraison est repoussée au 1er trimestre 2014.
Ceci serait du à deux changements :

  1. Une aile en aluminium à la place du carbone... Le syndrome du 787 ?
  2. Un fuselage de plus grand diamètre.
Mitsubishi espère vendre 1000 MRJ sur 20 ou 30 ans.

http://www.reuters.com/article/rbssIndustryMaterialsUtilitiesNews/idUST8373720090909

Amicalement


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Whisky Charlie

Re: Mistubishi MRJ

Message par Poncho (Admin) le Mer 9 Sep 2009 - 22:42

Merci Jullienaline

Je renverrais aussi vers :

http://www.flightglobal.com/articles/2009/09/09/332045/aa09-mitsubishi-unveils-major-changes-to-mrj-programme.html

On peut aussi rajouter une version rallongée.

Un court extrait


"The MRJ stretch model is added to the family to respond to customer needs. The launch is subject to demand and business case," it says.

With the aluminium wings, the company moves away from its earlier aim of using significant amounts of composite materials for the airframe. The result is that the only remaining composite parts will be the empennage, horizontal tail and vertical tail, amounting to 10-15% of the total airframe.

"Conceptually, this is a very big change," admits Mitsubishi Aircraft. "Structural changes are easier and require shorter lead-time with aluminium wings. With an aluminium wing box, the wing structure can be more easily optimised for the MRJ70/90 and the stretch model, which enhances the overall competitiveness of the MRJ family."


Il est explicitement indiqué dans cet article qu'il est plus simple d'optimiser une structure alu pour les trois dérivés...
Interessant sachant qu'il s'agit quand même d'une série de 1000 avions qui est envisagée...
Taux de composite descendant à 15%

Bonne soirée


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Re: Mistubishi MRJ

Message par Poncho (Admin) le Jeu 10 Sep 2009 - 10:13

Bonjour à tous

Le MRJ toujours dans l'actualité


MRJ final configuration shows roomier cabin; service entry pushed back
Thursday September 10, 2009
Mitsubishi Aircraft Corp. yesterday announced the final configuration of its MRJ, showing a taller cabin, increased overhead bin space and a wing box made of aluminum rather than composite materials.

In conjunction with the changes, made as a result of customer feedback and discussions, the manufacturer delayed the program by about a year, with first flight now set for the second quarter of 2012 and first delivery in the first quarter of 2014 rather than 2013 (ATWOnline, May 21). It also said it is considering a 100-seat MRJ stretch to join the 78-seat MRJ70 and 92-seat MRJ90 versions currently being offered. The program was launched officially in March 2008 with 25 MRJ90 orders from ANA.

Fuselage height has been raised by 2.5 in. to 116.5 in., enabling a 1.5 in. increase in cabin centerline headroom to 80.5 in. and 12% more overhead bin volume. The cargo holds have been redesigned to eliminate the smaller forward hold and enlarge the aft compartment. The volume remains unchanged at 644 cu. ft. but the redesign will facilitate baggage handling on the aircraft, Mitsubishi said. As a result of the change, the pressure bulkhead has been relocated farther aft, the floor of the cargo hold is lower and the avionics compartment is moved to the forward compartment.

The decision to switch to aluminum for the wing box was driven by the desire to simplify manufacturing and allow shorter lead times for structural changes. Additionally, "with an aluminum wing box, the wings can be optimized to match the attributes of each member of the MRJ airplane family. This will maximize the performance of all MRJ models, including the possible stretch version," the company said.

When the fly-by-wire aircraft was introduced, Mitsubishi said it would be composed of 30% composite materials including the wing and vertical stabilizer. It will be powered by Pratt & Whitney's PW1000G geared turbofan. Final configuration places the aircraft "on the path to completing critical design review and design freeze in the coming months."


by Sandra Arnoult

Ici

http://www.atwonline.com/news/story.html?storyID=17814

Bonne journée à tous


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Re: Mistubishi MRJ

Message par 87_Arnac le Ven 11 Sep 2009 - 19:04

Bonsoir,

Il y a quelque chose de rafraichissant dans cette annonce !
Dans l'état actuel le composite n'est pas tout !
C'est un moyen, et non une fin en soi.

Bombardier CS : poids de composite = 20%
MRJ = environ 15%

Questions :
- Compte tenu du fort retard du 787, les capacités de mitsibushi en traitement des composites auraient-elles permis d'avoir de bonne cadences sur le MRJ ?
- Quel est la part du retour d'expérience sur le 787 ? et la part d'optimisation du "business case global" de l'avion ?
- Quelle est la part réelle des performances liées la cellule et aux moteurs ?

Pour revenir à une de mes marottes... L'Al-li existe et commence a répandu sur les lanceurs américains, et même sur la navette spatiale.

Le comportement des métaux est à ce jour très bien connu, ce qui permet en outre certainement de mieux optimiser le calcul des structures (c.f. déboires actuels de Boeing...)

Bonne soirée
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jullienaline
Whisky Charlie

Re: Mistubishi MRJ

Message par jullienaline le Ven 2 Oct 2009 - 22:32

Bonsoir à tous,

Pour fêter une si belle commande, voici la vidéo de présentaion du MRJ

http://www.youtube.com/watch?v=0fYq63zJ1TI&feature=player_embedded

Amicalement


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Re: Mistubishi MRJ

Message par jullienaline le Jeu 29 Oct 2009 - 10:50

Bonjour à tous,

Les portes du MRJ seront européennes.

Eurocopter va fournir les portes pour avion Mitsubishi

PARIS (Dow Jones)--Eurocopter a annoncé mercredi que sa filiale allemande, Eurocopter Deutschland GmbH, avait été sélectionnée par le japonais Mitsubishi Aircraft Corp. pour concevoir et fabriquer l'ensemble des portes du MRJ, l'avion de transport régional développé par le groupe nippon.
Les conditions financières n'ont pas été précisées.
http://www.easybourse.com/bourse/actualite/eurocopter-va-fournir-les-portes-pour-avion-mitsubishi-NL0000235190-751727

Amicalement


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Re: Mistubishi MRJ

Message par jullienaline le Mar 22 Déc 2009 - 23:48

Bonsoir à tous,

Un accord entre Saab et Mitsubishi pour développer la documentation technique du futur MRJ.
Saab doit apporter son expérience provenant des 340 et 2000.

Saab and Mitsubishi Aircraft Corporation Sign Agreement for Support Solutions - First Significant Order Achieved

Saab and Mitsubishi Aircraft Corporation (MJET) have signed an agreement under which Saab will provide technical publication documentation work to MJET in support of their Mitsubishi Regional Jet (MRJ) programme.
The framework agreement is a strategically important achievement for Saab. It opens the path for further discussion between the companies to supply and apply Saab’s extensive expertise in the area of commercial aircraft support solutions, gained from the Saab 340 and 2000 programmes as well as various military programmes, to MJET and their new MRJ aircraft. The Mitsubishi Regional Jet is a family of 70- to 90-seat next-generation regional jets.
A first support contract has been signed within the frame of the agreement. On request of the customer the order value will not be announced.
“We have had on-going discussions with Mitsubishi since 2003 when they were first considering entering the regional jet market and had concluded that they needed a partner for support and services outside Japan”, states Saab Aerotech President Lars-Erik Wige. “This agreement and the first specific contract to result from it are a positive step forward in the cooperation between our two companies. Mitsubishi is developing a ground breaking aircraft in the MRJ and Saab is proud to work with them in their effort to provide equally ground breaking levels of customer support.”
“At MJET, as we undertake the implementation of customer support related to the MRJ, we are pleased to have Saab, with its many years of experience in this area, as a partner to help us in developing some parts of our technical manuals in the field of customer support. This is one big step forward in MJET’s drive to provide top-notch service to our valued customers,” said MJET President Hideo Egawa.
The initial contract signed covers the area of technical publications development during the years 2010-2015. Under this contract, Saab will develop a comprehensive package of maintenance and support documentation for both the MRJ70 as well as for the MRJ90 aircraft including, for example, maintenance manuals as well as spare parts catalogues. The technical publications will be developed to the new S1000D 4.0 standard. Discussions continue between the two companies to finalize additional areas of cooperation.
MJET has announced MRJ orders for 25 aircraft to All Nippon Airways, Japan (15 firm and 10 options) and a Letter of Intent to provide 100 aircraft to Trans States Holdings Inc., USA (50 firm and 50 options). The Aircraft is under development in Nagoya Japan and the first flight expected to take place second quarter 2012. The aircraft will enter into service during the first quarter of 2014.
Mitsubishi Aircraft Corporation (MJET) commenced operation on April 1, 2008 to conduct the design, type certification, procurement, sales and marketing, and customer support of the Mitsubishi Regional Jet (MRJ). It is currently capitalized at 100 billion yen, with this financing being furnished by, among others, Mitsubishi Heavy Industries, Ltd., Toyota Motor Corporation, Mitsubishi Corporation, Sumitomo Corporation and Mitsui & Co., Ltd.
The information is that which Saab AB is required to declare by the Securities Business Act and/or the Financial instruments Trading Act. The information was submitted for publication on December 22, at 11.20.
Saab serves the global market with world-leading products, services and solutions ranging from military defence to civil security. Saab has operations and employees on all continents and constantly develops, adopts and improves new technology to meet customers’ changing needs.
http://finance.yahoo.com/news/Saab-and-Mitsubishi-Aircraft-bw-2913238648.html?x=0&.v=1

Amicalement


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Whisky Charlie

Re: Mistubishi MRJ

Message par jullienaline le Lun 1 Fév 2010 - 19:33

Bonsoir à tous,

Goodrich est sélectionné pour fournir le système de freins du MRJ.
Cela comporte des freins carbone, un contrôle numérique et un système ABS.

Sumitomo Precision Products Selects Goodrich to Supply Integrated Brake System for Mitsubishi Regional Jet

SINGAPORE AIRSHOW -- Goodrich Corporation (NYSE: GR) has been selected by Sumitomo Precision Products Co., Ltd. to supply the integrated brake system for the new Mitsubishi Regional Jet (MRJ) aircraft. The system will become a part of Sumitomo's complete landing gear system for the MRJ. Work will be performed by the Goodrich Aircraft Wheels and Brakes business.
The integrated brake system is comprised of the main wheels and carbon brakes, the nose wheel, and the fully digital brake control and antiskid system. The system will use Goodrich's DURACARB®️ carbon brake heat sink material. The successful service history of DURACARB has yielded a 35 percent greater brake life than competing carbon braking materials, resulting in significant cost saving for operators.
"The selection of Goodrich for the MRJ's integrated braking system expands the presence of our state-of-the-art technology on this next-generation regional jet platform," said Brian Brandewie, president, Aircraft Wheels and Brakes for Goodrich. "Our advanced lightweight carbon brake technology will contribute to the outstanding operational efficiency expected from the MRJ. We look forward to sharing in the success of this new and exciting aircraft, and to the continued development of our relationship with Sumitomo."
Mitsubishi's MRJ is 70-90 seat class regional jet being developed to achieve outstanding operational economy and cabin comfort. There are 125 aircraft currently on order for launch customers All Nippon Airways and Trans States Holdings. First flight is expected in 2012 with first deliveries commencing in 2014. Sumitomo Precision Products Co., Ltd. was selected by Mitsubishi Aircraft Corporation to develop and integrate a complete landing gear system for the MRJ.

Other Goodrich content on the MRJ includes the nacelle and thrust reverser system for the Pratt & Whitney PurePower®️ PW1000G engines that will power the new aircraft.
http://finance.yahoo.com/news/Sumitomo-Precision-Products-prnews-1580710004.html?x=0&.v=1

Amicalement


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Whisky Charlie

Re: Mistubishi MRJ

Message par Poncho (Admin) le Mar 2 Fév 2010 - 18:26

Bonjour à tous

http://www.flightglobal.com/articles/2010/02/02/337922/singapore-2010-mrj-airframe-delivers-half-of-fuel-burn-advantage.html

Mitsubishi communique sur le MRJ



SINGAPORE: 2010 MRJ airframe delivers 'half of fuel-burn advantage': Mitsubishi
By Max Kingsley-Jones

Mitsubishi Aircraft says that around half of the double-digit operating cost advantage claimed for its MRJ regional jet over the rival Embraer E-Jet family comes from its advanced airframe technology, and the remainder from its Pratt & Whitney PW1000G geared turbofan engines.

The 88- to 92-seat MRJ90's cash operating cost advantage over the similarly sized Embraer 190 is "28% on a per-trip basis and 16% on a per-seat/mile basis", claims Mitsubishi Aircraft's marketing director Yugo Fukahara speaking at the Singapore air show. "The majority of the cash operating cost advantage comes from fuel burn and half of this comes from the engine and half from the airframe," he adds.

The airframer remains bullish about the contribution of the new twinjet's airframe design and structure delivers to its greater efficiency over rivals, despite last year's decision to adopt a majority aluminium structure after dropping plans for a carbonfibre wing.





Although the latest MRJ brochure claims "advanced aerodynamics and cutting-edge technology with the use of composite materials", as a result of the wing structure rethink the only remaining composite parts are the empennage, horizontal tail and vertical tail, amounting to 10-15% of the total airframe.

The MRJ90, which is the lead variant and due to enter service with launch customer All Nippon Airways in early 2014, has 31% lower block fuel burn per trip and 18% better block fuel burn per seat over the E-190, claims Mitsubishi. "What this means is a $1.25 million advantage per aircraft per year," says the company's executive vice-president Junichi Miyakawa.

The advantage over the MRJ's Asian rival, China's GE CF34-powered Comac ARJ21, is potentially even greater, says Miyakawa. While the specific ARJ21 performance data is unavailable for a true comparison, Miyakawa estimates that its disadvantage to the MRJ is similar that of the Rolls-Royce Tay-powered Fokker 100, which has around 40% higher fuel burn per trip.

Meanwhile, Miyakawa says that the MRJ's development programme is "on track". The preliminary design review was achieved last year when the "outer mould line" and sizing of major structural elements was completed. "The critical design review, or design freeze, will be reached by the end of the summer," he adds. The programme remains on course to achieve a first flight by mid-2012.



Malgré l'abandon des grandes parties de l'airframe initialement prévus en composites (le taux de composites dans l'avion n'est que de 10-15% et ne concerne que les empennages), Mitsubishi indique que la moitié des gains sur les coûts d'exploitation proviennent de la cellule.
On parle de coûts d'exploitation donc on intégre l'efficacité énergétique, les taxes aéro, les charges personnel et financières et les coûts de maintenance.

En contrepoint des annonces récentes d'Embraer qui estime que ses E-jet sont encore dans la course, Mitsubishi annonce les gains suivants :

Vs EMB190 : -28% coût d'opération par voyage et -16% à la place offerte


En efficacité énergétique, mitsubishi indique que 50% des gains sont dus au GTF et 50% à la cellule
Par comparaison :

Vs EMB190 : -31% consommation par voyage et -18% par place offerte
Vs Fokker100 : -40% consommation par voyage

Croustillant, mitsubishi estime que l'ARJ21 aune efficacité similaire à celle du Fokker100... à voir... l'aile est quand même nouvelle et les moteurs plutôt plus récent que les Tay du F100.

Bonne lecture


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Whisky Charlie

Re: Mistubishi MRJ

Message par jullienaline le Mar 2 Fév 2010 - 22:20

Bonsoir à tous,

Merci Poncho et pour compléter

  • Mitsubishi vise 30 % du marché.
  • L'Asie serait le premier marché visé
  • Les coûts d'exploitation seraient réduit de 20 millions de $ sur 20 ans.
  • La version 90 places serait vendue aux alentours de 40 millions de $.
  • JAL serait intéressée pour remplacer ses 747 (sic !) et ses MD-90 de son réseau domestique

M'bishi says MRJ jet should capture 30 pct mkt

*Says MRJ to help airlines cut costs by $10-$20 mln in 20 yrs
*Plans to initially target Southeast Asia and India markets
*Says 90-seat MRJ series priced at around $40 mln

By Mariko Katsumura and Harry Suhartono
SINGAPORE, Feb 2 (Reuters) - Mitsubishi Aircraft Corp, a unit of Japan's Mitsubishi Heavy Industries Ltd, said its new MRJ jet, Japan's first domestically developed passenger aircraft, should capture 30 percent of the short-haul market in 10 years.
The jet, to be built in 70-seat and 90-seat variants, will be more fuel efficient and help airlines cut operating costs by as much as $20 million over the next 20 years, said Yosuke Takigawa, senior vice president of sales and marketing.
The 90-seater will be priced at around $40 million, he said.
Mitsubishi is keen to drum up more business for the MRJ, which is likely to compete against Brazilian aircraft maker Embraer's (EMBR3.SA) regional jet series.
The MRJ project is seen by some as Japan's final hope for aircraft manufacturing with the first aircraft expected to go into service in 2014.
"The airline market is still undergoing a tough time, but we expect a big potential in the regional jet market," Takigawa told Reuters on the sidelines of the Singapore Airshow.
Takigawa said the company's initial plan is to raise MRJ's presence in Southeast Asia and India.
Mitsubishi Aircraft, owned 64 percent by Mitsubishi Heavy, has so far received orders for 125 aircraft, including 25 from All Nippon Airways.
"Since there will be a number of Embraer aircraft that will see their current leasing contracts ending in or around 2014, our entry to the market (in 2014) would be timely in order to win customers," Takigawa said.
Takigawa said the company is also looking to finalise its first sales deal with Japan Airlines (JAL), which filed for bankruptcy on January 19.
Under the government-led restructuring planned for JAL, the carrier plans to reconfigure its fleet by retiring all of its 37 Boeing 747-400 and all 16 McDonnell Doughlas MD-90 planes to buy smaller aircraft to take their place.
http://www.reuters.com/article/idCNSGE6110BQ20100202?rpc=44

Amicalement


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Whisky Charlie

Re: Mistubishi MRJ

Message par Poncho (Admin) le Mer 3 Fév 2010 - 9:41

Bonjour

Et on continue sur le MRJ...
Pour qu'il soit capable de remplacer les 747-400D de JAL () il est prévu le gel de la configuration technique la fin de l'été...


Mitsubishi: MRJ design freeze by end of summer

Mitsubishi Aircraft Corp. Executive VP Junichi Miyakawa said that "major structures" for the MRJ have been "sized and defined" and the company is "on track" to "freeze the [aircraft] design by the end of this summer."

Addressing reporters here, he claimed that the company has engaged in "very detailed, serious talks" with "several customers" regarding new MRJ orders. The potential customers are in the US, Europe and Asia, he said.

Mitsubishi currently has 15 firm orders plus 10 options from launch customer ANA for the 90-seat variant with first delivery slated for 2014 and 50 firm orders plus 50 options from Trans States Airlines, though Miyakawa conceded that "the contract has not been signed" with the US carrier.
by Aaron Karp



http://www.atwonline.com/news/story.html?storyID=19240

Bonne journée


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Whisky Charlie

Re: Mistubishi MRJ

Message par jullienaline le Mar 9 Fév 2010 - 12:07

Bonjour à tous,

Un contrat sur le MRJ pour BAE Systems. La compagnie va apporter son expertise sur tout ce qui concerne la propulsion : reacteur, nacelle, pylone, APU et circuit carburant.

BAE Systems wins engineering contract for Mitsubishi Regional Jet

BAE Systems has signed an agreement with Mitsubishi Aircraft Corporation of Japan to provide design integration and certification services in connection with the propulsion systems for the next-generation Mitsubishi Regional Jet (MRJ) aircraft.

A team from BAE Systems’ Regional Aircraft business at Prestwick in Scotland will provide engineering expertise on a number of work packages for the aircraft which include powerplant, pylon, nacelle, auxiliary power units and fuel systems.

The MRJ aircraft, a 70-90-seat family of twin-engined regional jets, will be powered by Pratt and Whitney PurePower PW1000G engines. First flight is scheduled for 2012, with entry into service planned for 2014. Current customers for the MRJ are All Nippon Airways and Trans States Holdings of the USA.
http://www.avitrader.com/press/printview.aspx?id=11988

Amicalement


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Whisky Charlie

Re: Mistubishi MRJ

Message par Poncho (Admin) le Mar 18 Mai 2010 - 9:38

Bonjour à tous

Quelques nouvelles du MRJ

http://www.flightglobal.com/articles/2010/05/17/342031/mitsubishi-to-complete-mrj-design-by-end-august.html



Mitsubishi Aircraft aims to complete the design of its Mitsubishi Regional Jet (MRJ) by the end of August, and is also working on a plan to develop an after-sales support network.

"We are working on the final details so we can freeze the design" by the end of August, says the aircraft-maker's president Hideo Egawa.

It has completed the preliminary design review and is now working on the joint-definition phase, he adds.

Mitsubishi Aircraft announced some major changes last September to the aircraft's design, in response to airline feedback.

The aircraft-maker was originally planning to have the wings made of composite materials but announced last September that the wings would be made of aluminium alloy.

The Boeing 787 has composite wings but Egawa says the wings on smaller aircraft, such as the MRJ, have more curvature. As a consequence, the smaller wings require more structural support inside the wing, he adds.

He also says aircraft wings need to have manholes, to give maintenance engineers access, and that all manholes must be reinforced.

The problem with the MRJ is that the manholes are significant in size in proportion to the wing.

These weight gaining factors mean there is no great benefit in having composite wings for the MRJ, adds Egawa.

Another factor behind the decision is that Mitsubishi is considering having a 100-seat stretched version of the MRJ, says Egawa. It is easier to adjust the size of the wing during the manufacturing process if the wing is made from metal materials, he adds.

Despite the switch to aluminium-alloy wings, Mitsubishi Aircraft still plans to make the aircraft's empennage from composites using vacuum-assisted resin transfer molding, says Egawa.

One advantage of this technique is that Mitsubishi can bake the empennage - to harden it - using a non-pressurised oven. Composite parts manufactured using other techniques often need to go into a pressurised autoclave oven, an expensive piece of equipment.

The MRJ's first flight is due in 2012, with first delivery scheduled for 2014 to launch customer All Nippon Airways (ANA). The airline has ordered 15 MRJ90s with options for 10 more. Besides the 90-seater, Mitsubishi is also designing the MRJ70, a 70-seater.

In an effort to win more customers, Mitsubishi is now working to create a customer support network.

This involves signing up maintenance, repair and overhaul (MRO) firms as approved MRJ facilities.

Mitsubishi Aircraft will also work to ensure there are spare parts warehouses in key locations around the world, so customers have ready access to spares, says Egawa.

There will also be a 24-hr centre that customers can call to speak to MRJ liaison engineers to get technical assistance, he adds.


Définition détaillée finie pour fin août.
Retour sur le choix de techniques plus conventionnelles pour les ailes, notamment sur les ailes plus petites du MRJ, l'intégration des trous d'homme pour la visite des réservoirs et du système de carburant semble plus simple à réaliser dans l'immédiat en technique classique.

Compte tenu de son carnet de commande bloqué à 65 exemplaires, Mitsu cherche à rassurer les clients en montant un réseau de service après vent robuste

Bonne journée


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Beochien
Whisky Charlie

Re: Mistubishi MRJ

Message par Beochien le Mar 18 Mai 2010 - 9:56

Bonjour ...

Merci Poncho

Ben ça rejoint un peu Bombardier, de mémoire ils ont une structure alu pour l'aile ...

Et j'ai vu aussi qu'on ne pouvait pas amincir le CFRP en proportion des gros avions, because résistance à la grêle, concernant les ailes, c'est plus pour les bords d'attaque je suppose ?? !

Le trade off sera peut être difficile aussi pour les remplaçants des 737-320 !

Et quant on voit que Mitsu est sur l'aile du 787, plutôt lourde aussi, disons, pas aussi légère qu'espérée ...
Des progrés à attendre des Carbones et autres CFRP !
Vive les Nanotubes, ça viens !

JPRS
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Poncho (Admin)
Whisky Charlie

Re: Mistubishi MRJ

Message par Poncho (Admin) le Lun 6 Sep 2010 - 11:40

Bonjour
Quelques petits détails pour l'aménagement intérieur du MRJ avec les sièges "filet"

Je pointe vers le microste dédié au MRJ sur Flightglobal assez intéressant

http://flightglobal.firstlightera.com/EN/Microsites/1/MRJ/AircraftOverheadBins-AircraftCabinLayout-AircraftSeatDesign-AircraftSeatConfiguration-AircraftInteriorDesign.htm

Une épaisseur de siège réduite à 1/4 de pouce...



The new slim seat installed on the MRJ is made with unique 3 dimensional net fabric. The fabric has a thickness of only 1/4 inch, which enables the bottom and back of the seat to be thinner than conventional seats, producing wider leg room.
Moreover, the fabric disperses body pressure and perspiration, which will offer better comfort for passengers




A noter la soute à bagage en queue au niveau du pont principal

Il y a aussi une soute sousle pont principal

Bonne journée


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Poncho (Admin)
Whisky Charlie

Re: Mistubishi MRJ

Message par Poncho (Admin) le Lun 6 Sep 2010 - 11:48

C'est probablement encore mieux avec le lien vers le catalogue PDF

http://www.mrj-japan.com/images/catalog_e.pdf


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Paul
Whisky Quebec

Re: Mistubishi MRJ

Message par Paul le Lun 6 Sep 2010 - 14:02

Bonjour,

La soute sous le pont a été éliminé lors de l'annonce de la configuration finale :

http://www.mrj-japan.com/pdf/090909final_mrj_configuration_e.pdf

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Beochien
Whisky Charlie

Re: Mistubishi MRJ

Message par Beochien le Lun 6 Sep 2010 - 14:06

Bonjour !
Merci Paul !

Je sens venir de délicats problèmes d'équilibrage de l'avion !
Gare aux valises des trafiquants de ... plomb !

Et ... qq pax en soute AR quand il n'y a pas de bagages ??

JPRS
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Poncho (Admin)
Whisky Charlie

Re: Mistubishi MRJ

Message par Poncho (Admin) le Lun 6 Sep 2010 - 14:45

Bonjour Paul

Merci !

Je subodore un intérêt particulier pour cette nuoveauté...

Wink


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Paul
Whisky Quebec

Re: Mistubishi MRJ

Message par Paul le Lun 6 Sep 2010 - 15:19

Bonjour,

Ils ont remplacé la soute par un compartiment avionique :



Peut-être que ce sera assez pour compenser le poids des bagages...
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Poncho (Admin)
Whisky Charlie

Re: Mistubishi MRJ

Message par Poncho (Admin) le Lun 6 Sep 2010 - 15:35

La config est similaire au CRJ qui en plus à les moteurs aux fesses...
C'est vrai que les Turboprop ont les bagages à l'avant...


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aeroduO5
Whisky Quebec

Re: Mistubishi MRJ

Message par aeroduO5 le Lun 6 Sep 2010 - 15:51

Je ne pense pas que cette configuration pose un problème d'équilibrage.
C'est simplement une question de paramétrage des logiciels.

De plus comme l'a dit Poncho les réacteurs sont sous les ailes donc le poids
devrait être bien réparti.

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