Boeing lancia il 737 MAX


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Boeing Launches 737 New Engine Family with Commitments for 496 Airplanes from Five Airlines

- Will deliver improved fuel efficiency and lowest operating costs in single-aisle market
- Customers expressing overwhelming acceptance for new airplane
- Feldmann to lead new program; Teal named chief project engineer

SEATTLE, Aug. 30, 2011 /PRNewswire/ -- The Boeing (NYSE: BA) Company's board of directors has approved the launch of the new engine variant of the market-leading 737, based on order commitments for 496 airplanes from five airlines and a strong business case.
"The re-engined 737 will allow Boeing to continue to deliver the most fuel efficient, most capable airplane with the lowest operating costs in the single-aisle market," said Boeing Commercial Airplanes President and CEO Jim Albaugh. "This, coupled with industry leading reliability and maintainability, is what customers have told us they want. As a result, we are seeing overwhelming demand for this new and improved version of the 737. We are working with our customers to finalize these and other agreements in the weeks and months ahead."
The new 737 family will be powered by CFM International LEAP-1B engines optimized for the 737. It will have the lowest operating costs in the single-aisle segment with a 7 percent advantage over the competition. Deliveries are scheduled to begin in 2017.
"Customers tell us they want to improve profitability and fuel efficiency while reducing their environmental footprint," said Albaugh. "This solution meets all three of those needs."
When compared to a fleet of 100 of today's most fuel-efficient airplanes, this new model will emit 277,000 fewer tons of CO2 and save nearly 175 million pounds of fuel per year, which translates into $85 million in cost savings. The airplane's fuel burn is expected to be 16 percent lower than our competitor's current offering and 4 percent lower than their future offering.
Boeing has named Bob Feldmann vice president and general manager of the new engine 737 family. With 35 years of aerospace experience, Feldmann most recently led the Surveillance and Engagement division within Boeing Military Aircraft, a unit of Boeing Defense, Space & Security that includes several commercial derivative programs based on the 737 platform. He has been instrumental in leading the successful development of complex programs such as the EA-18G Growler and the P-8A Poseidon.
Michael Teal has been named vice president, chief project engineer and deputy program manager. Teal's most recent role was vice president and chief project engineer on the 747-8 program, where he was instrumental in managing the airplane's configuration and integration, performance, safety, test and certification.
The Boeing 737 is the world's most popular and reliable commercial jet transport. The 737 family has won orders for more than 9,000 airplanes.
The Next-Generation 737 program has continuously improved the products, features and services that provide increasing value to customers. Today's Next-Generation 737s are up to 7 percent more fuel-efficient than the first airplanes delivered in 1998. Boeing forecasts global demand for more than 23,000 airplanes in the 737's market segment over the next 20 years at a value of nearly $2 trillion.
Certain statements in this release may be "forward-looking" within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "will," "expects," "intends," "plans," "projects," "believes," "estimates," "targets," "anticipates," and similar expressions are used to identify these forward-looking statements. Forward-looking statements are based on our current expectations and assumptions, which may not prove to be accurate. These statements are not guarantees and are subject to risks, uncertainties, and changes in circumstances that are difficult to predict. Actual outcomes and results may differ materially from what is expressed or forecasted in these forward-looking statements. As a result, these statements speak to events only as of the date they are made and we undertake no obligation to update or revise any forward-looking statement, except as required by federal securities laws. Specific factors that could cause actual results to differ materially from forward-looking statements include, but are not limited to, the effect of economic conditions in the United States and globally, and general industry conditions as they may impact us or our customers, as well as the other important factors disclosed previously and from time to time in our filings with the Securities and Exchange Commission.

http://boeing.mediaroom.com/index.php?s=43&item=1907

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DATE:30/08/11
SOURCE:Flight International
More details emerge on configuration of re-engined 737
By Jon Ostrower



More details have emerged on the likely configuration of the powerplant for the re-engined version of Boeing's 737, ahead of expected board approval for the programme.
As well as a 167cm (66in) fan on the CFM International Leap-X engine - increased from 157cm on the CFM56-7B, which powers the 737NG - the updated jet is also expected to feature external nacelle chevrons for noise reduction, similar to those featured on the 787 and 747-8.
A fan of the proposed size would remove the need to modify the design of the landing gear, although Boeing declined official comment on the deliberations on fan size.
Detailed assessments are under way to incorporate a revised tail cone, natural laminar flow nacelle and a hybrid laminar flow vertical stabiliser for additional drag and fuel burn reduction.
The airframer's board of directors was due to meet at the end of August to vote on giving a green light to the project.
Boeing is seeking to strike a balance with its design, delivering a 10-12% fuel burn improvement from the updated engine without changing the 737 too significantly and breaking commonality with its current models.
This potentially allows a way in for Airbus to offer its A320neo.
While Boeing's 167cm fan will have a lower bypass ratio and higher specific fuel consumption (SFC) than the 198cm Leap-X and 205cm Pratt & Whitney PW1100G engine options for the A320neo, the smaller engine will weigh less and create less drag on the 737's airframe.
According to one industry assessment of the engine's performance, the SFC improvement of a 167cm fan would offer around 13-14% over the 155cm CFM56-7B engine that powers the 737 today. Once integrated on to the aircraft it would deliver a fuel burn benefit of 10-12%.
A design shelved earlier this year, designated the 737RE, featured a 177cm fan, which required a 20cm nose gear extension to meet the required 43cm engine nacelle ground clearance, to avoid hitting taxiway lighting.
The 737 can accommodate up to a 170cm fan before requiring any changes to its landing gear.
According to that now-defunct plan, the longer nose landing gear would have prompted a redesign in the lower lobe of the forward 41 section, requiring Boeing to modify the electrical equipment bay to find new routes for wiring and equipment racks.
The changes would have also likely necessitated widespread modifications to the aircraft's empennage and fuselage.
Boeing is seeking to avoid repeating the trouble it encountered when developing the 747-8 freighter and Intercontinental, which began its design life as a "simple" re-engine with General Electric GEnx-2B powerplants.
The mounting of the 747's engines and stretching of the fuselage prompted significant changes to the aircraft's wing and flight control systems, which subsequently caused a ripple effect across the jumbo's design.
In turn, this drove up the extent and cost of the change required to deliver on the jet's performance targets.
Once Boeing receives the go-ahead to offer the 737-7, -8 and -9 to customers - as it harmonises the range in line with the 747 and 787 - it will be able to begin taking orders for the updated narrowbody, including firming a commitment for 100 of the type from American Airlines, announced on 20 July.

http://www.flightglobal.com/article...merge-on-configuration-of-re-engined-737.html
 
Ultima modifica da un moderatore:
quindi nessun aumento del numero di passeggeri come chiesto da alcune low cost come Ryanair o Southwest (due dei più grandi clienti boeing 737)?
 
quindi nessun aumento del numero di passeggeri come chiesto da alcune low cost come Ryanair o Southwest (due dei più grandi clienti boeing 737)?
Non credo, l'aereo all'infuori dei motori non dovrebbe cambiare quasi per niente, tanto meno nelle dimensioni.
Da notare che non solo Boeing ha scelto di non fare un modello completamente nuovo, ma ha pure deciso di montare motori di piccolo diametro che hanno un rendimento palesemente inferiore a quelli (di diametro maggiore) utilizzati dal 320 neo.
Decisamente un progetto in economia.
Spero che i soldi risparmiati servano quanto prima allo sviluppo di una versione migliorata del 777.
 
quindi nessun aumento del numero di passeggeri come chiesto da alcune low cost come Ryanair o Southwest (due dei più grandi clienti boeing 737)?
Ma Ryanair usa il 737-800 e Southwest il 737-700, se vogliono una maggiore capacità perchè non ordinano il 737-900?
 
Perchè costa e consuma di più. MOL vorrebbe stipare 200 pax nel 737-800, utilizzando al massimo i 4 assistenti di volo.
 
Perchè costa e consuma di più. MOL vorrebbe stipare 200 pax nel 737-800, utilizzando al massimo i 4 assistenti di volo.

Esatto e mi pare che anche southwest gradirebbe un aumento dei 737 verso i due limite imposti dalle assistenti di volo 150 o 200 passeggeri
 
Non credo, l'aereo all'infuori dei motori non dovrebbe cambiare quasi per niente, tanto meno nelle dimensioni.
Da notare che non solo Boeing ha scelto di non fare un modello completamente nuovo, ma ha pure deciso di montare motori di piccolo diametro che hanno un rendimento palesemente inferiore a quelli (di diametro maggiore) utilizzati dal 320 neo.
Decisamente un progetto in economia.
Spero che i soldi risparmiati servano quanto prima allo sviluppo di una versione migliorata del 777.

Da quanto scritto sembrerebbe il contrario, dovrebbe consumare meno del 320
 
While Boeing's 167cm fan will have a lower bypass ratio and higher specific fuel consumption (SFC) than the 198cm Leap-X and 205cm Pratt & Whitney PW1100G engine options for the A320neo, the smaller engine will weigh less and create less drag on the 737's airframe.

Da quanto scritto sembrerebbe il contrario, dovrebbe consumare meno del 320

Credo si possa dire che il minor peso e il minor attrito aerodinamico, compensano solo in parte la minore efficienza: lo prova il fatto che sul 320neo, dove non c'era il problema della lunghezza del carrello (presente invece sul 737), hanno montato motori molto più grandi con un rapporto di diluizione maggiore e quindi più efficienti.
 
Dalle immagini sembra cambiata un po' l'estetica della parte posteriore, in particolare il cono in coda!!

Ma e' cosi' difficile fare il 737-850, un po' piu' lungo della serie -800 e un po' piu' corto del -900 in modo da accontentare le low cost che vogliono un 199Y e 4AV! E' cosi' difficile da sviluppare in fretta un modello a meta' tra i due 'grandi' 737??!!
 
Ma e' cosi' difficile fare il 737-850, un po' piu' lungo della serie -800 e un po' piu' corto del -900 in modo da accontentare le low cost che vogliono un 199Y e 4AV! E' cosi' difficile da sviluppare in fretta un modello a meta' tra i due 'grandi' 737??!!
IL 900 è più lungo dell'800 di appena 2.6 metri, quindi una versione intermedia è fuori discussione.

Quei bordi seghettati nel retro della gondola dei motori, che stanno pure su quelli del 787, a cosa servono?
Riducono il rumore e migliorano l'aerodinamica.
 
Ultima modifica:
Il Boeing 737 rimotorizzato si chiama 737 MAX

Boeing ha battezzato la nuova versione del 737 come 737 MAX. Chiederei cortesemente ai moderatori se possono correggere il titolo del 3d. Grazie. :)

Boeing introduces 737 MAX With Launch of New Aircraft Family

-Will deliver best fuel efficiency and lowest operating costs in single-aisle market

SEATTLE, Aug. 30, 2011 /PRNewswire/ -- Boeing (NYSE: BA) has unveiled the 737 MAX, the name of the new engine variant of the market-leading 737 launched today.
The new family of aircraft – 737 MAX 7, 737 MAX 8 and 737 MAX 9 – builds on the strengths of the Next-Generation 737.
"The 737 MAX offers airlines the right solution and the best choice for creating the most successful future with improved profitability," said Nicole Piasecki, vice president of Business Development and Strategic Integration, Boeing Commercial Airplanes. "The 737 MAX will deliver maximum efficiency, maximum reliability and the Boeing Sky Interior will continue to offer maximum passenger comfort. We call it the 737 MAX because it optimizes everything we and our customers have learned about designing, building, maintaining and operating the world's best single-aisle airplane."
The 737 MAX will deliver big fuel savings that airlines will need to successfully compete in the future. Airlines will benefit from a 7 percent advantage in operating costs over future competing airplanes as a result of optimized CFM International LEAP-1B engines, more efficient structural design and lower maintenance requirements.
Airlines will continue to benefit from maximum reliability. The 737 MAX will build upon the Next-Generation 737's highest reliability performance of any airplane in the world – 99.7 percent on-time departure rate.
The 737 MAX will deliver passenger appeal through the new 737 Boeing Sky Interior. The powerful appeal of the new interior comes from the most spacious cabin headroom, overhead bins that disappear into the ceiling yet carry more bags and LED lighting that brings any color into the cabin.
The Boeing 737 is the world's most popular and reliable commercial jet transport, with more than 9,000 orders to date. Boeing forecasts global demand for more than 23,000 airplanes in the 737's market segment over the next 20 years at a value of nearly $2 trillion.
More information about 737 MAX is available at www.newairplane.com and in this video: http://www.youtube.com/watch?v=i_kKD6g53AA.

http://boeing.mediaroom.com/index.php?s=43&item=1908

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DATE:31/08/11
SOURCE:Air Transport Intelligence news

Boeing aims to minimise 737 Max changes
By Jon Ostrower

With the development of its re-engined 737 Max, Boeing aims to limit the scope of work to changes directly related to the integration of the CFM International Leap-1B engine.
"There are a lot of things we could do with the airplane, but what we want to do is limit the scope of work," said Boeing Commercial Airplanes chief executive officer Jim Albaugh.
"And we're going to limit the scope of work associated with the engine. I've told my team I don't want to hear 'simple' and 're-engine' in the same phrase," he added. "But we're going to make this the simplest re-engine possible."
Albaugh said in addition to the new engine, Boeing will offer a new auxiliary power unit tail cone for drag reduction.
Boeing's renderings of the 737 Max also feature reshaped flap fairings, as well as APU tail cone lights similar to those on the 787.
Albaugh also said Boeing plans no changes to the 737 Max's flight deck: "The one thing we do want to make sure we have with this airplane is compatibility with the NG, compatibility with airplanes we've already delivered. What customers have told us is don't touch the cockpit, and our plans are not to do that."
Additionally, Albaugh anticipates limiting the amount of re-certification work required on the 737 Max: "Those are some questions we're going to have to work with the FAA, our expectations is that there will be a certification issue, but it will have to do with the engine and nothing more."
However, while Boeing intends to work to limit the scope of work on the 737 Max, Albaugh said the airframer plans to introduce limited fly-by-wire for the narrowbody for the first time, a traditionally costly undertaking both in dollars and certification requirements.
"There are a couple of things we're going to make a more fly-by-wire than they are today, but very minimal things, very minimal," he said.

Product development plans for the 737 have indicated a move toward fly-by-wire spoilers that industry sources speculate could be used for manoeuvre load alleviation to increase the aircraft's maximum take-off weight.
The three-model 737 Max, replacing the Next-Generation 737 with the 737-7, -8 and -9, was launched by Boeing yesterday.

http://www.flightglobal.com/articles/2011/08/31/361440/boeing-aims-to-minimise-737-max-changes.html

Una macchina che uscirà nel 2017 con un limitato fly by wire mi lascia molto perplesso.
Ho il sospetto che la migliore arma del MAX nei confronti del NEO sarà il prezzo, perchè tecnicamente mi sembra un gradino sotto al concorrente europeo.
 
su quali basi tecniche affermi ciò? nè il 320 nè il 737 sono sul mercato
Il MAX rispetto al NEO monta motori di diametro non ottimizzato (per non dover riprogettare carrello e relativo vano), non utilizza un fbw "full" che mi sembra di rigore per un progetto impostato oggi, mantiene una sezione di cabina minore rispetto al NEO quindi più scomoda per i pax e per finire è frutto di un progetto che affonda le radici nel 707 sia pure evoluto nel tempo.
Suppongo che le modifiche che Boeing ha scelto di non implementare sul MAX si ripercuotano sul prezzo rendendolo più competitivo.
Ovviamente imho e tenendo presente che non ci sono ancora molte info sui progetti.
 
mantiene una sezione di cabina minore rispetto al NEO quindi più scomoda per i pax

Di questi tempi il comfort dei passeggeri su voli di breve/medio raggio è pressoché irrilevante per l'economia delle compagnie.

Suppongo che le modifiche che Boeing ha scelto di non implementare sul MAX si ripercuotano sul prezzo rendendolo più competitivo.

Sicuramente sarà così: uno dei motivi per non partire con un progetto completamente nuovo è stato il prezzo finale. Un 7new7 avrebbe avuto costi di sviluppo infinitamente superiori al 32S Neo: Boeing si sarebbe così trovata a dover vendere un aereo con prezzo unitario verosimilmente più alto del 32S, senza il vantaggio della commonality col 737, e con costi operativi sì migliori, ma probabilmente non sufficienti da giustificare il prezzo molto elevato. Anche un 737 più marcatamente evoluto avrebbe posto problemi di costi non indifferenti.