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Depois da bateria, asas do Boeing 787 Dreamliner apresentam problemas


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Depois da bateria, asas do Boeing 787 Dreamliner apresentam problemas

 

Foram identificadas rachaduras em partes da estrutura da aeronave. A falha teria sido originada em mudança no procedimento de fabricação

 

 

Leia mais em: http://www.tecmundo.com.br/aviao/52168-depois-da-bateria-asas-do-boeing-787-dreamliner-apresentam-problemas.htm#ixzz2vaPUecGz

 

 

Uma publicação recente do jornal nova-iorquino The Wall Street Journal relata um novo problema com as aeronaves da linha 787 Dreamliner da Boeing, considerada por muitos até hoje como a série comercial mais moderna do mundo.

 

Segundo essa publicação, foram identificadas rachaduras nas asas de pelo menos 42 das últimas unidades produzidas. A boa notícia para os viajantes é que nenhuma dessas aeronaves havia sido entregue para as companhias aéreas que as encomendaram.

 

Aparentemente, o problema teve origem em um dos primeiros estágios da produção das aeronaves, o qual sofreu uma mudança de procedimento como informa a Mitsubishi Heavy Industries, companhia responsável pela fabricação das asas utilizadas pelos modelos da Boeing.

 

De acordo com um porta-voz da Boeing, cada avião deve demorar de uma a duas semanas para ser inspecionado e ter esse problema corrigido. O representante da companhia ainda informou que 17 dessas 42 unidades já passaram por manutenção, sendo que sete delas foram submetidas a testes de voo e estão prontas para serem entregues.

 

O fato de a falha ter sido detectada ainda no processo produtivo não deixa de ser uma péssima notícia para a Boeing. Isso porque o 787 Dreamliner possui um histórico de problemas bem grande. Estreado em 2011, uma aeronave da linha perdeu parte da fuselagem em meados de 2012 durante um voo de teste.

 

SAIBA MAIS

Mais um problema com bateria de Boeing 787 ocorre no Japão

Bateria derretida tira todos os Boeing 787 de circulação

Novo Boeing 787 perde um pedaço durante voo teste nos EUA

No mês de janeiro de 2013, após uma sequência de relatos de falhas ao redor do mundo e de até causar um acidente no Japão , voos com esse avião foram completamente suspensos, sendo liberados somente três meses depois com o anúncio de um novo modelo para a linha. Por fim, no início deste ano, novamente a bateria do 787 Dreamliner voltou a apresentar problemas de funcionamento durante manutenção realizada no Aeroporto Internacional de Narita.

 

Fonte: The Wall Street Journal

 

 

 

 

Viu algum erro ou gostaria de adicionar uma sugestão para atualizarmos esta matéria?

Colabore com o autor clicando aqui!

 

 

Leia mais em: http://www.tecmundo.com.br/aviao/52168-depois-da-bateria-asas-do-boeing-787-dreamliner-apresentam-problemas.htm#ixzz2vaPC7oC4

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Toda vez que postam algum problema do 787, dizem que é porque ele é novo...

 

Até quando (ou por quanto tempo mais) ele será considerado novo? Será que essa desculpa ainda é válida?

 

Nao acho que seja desculpa, a Boeing inovou bastante do projeto do B787, materiais novos, conceitos novos. Hj paga-se caro por isso e a Airbus que agradece aprendendo com o erro da rival!

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Boeing Dreamliner 787: A Timeline Of 6 Years Of Failure

 

By International Business Times | Stock Market News | Mar 10, 2014 05:31PM GMT |

International Business Times

 

 

AA

By Christopher Harress - Boeing has discovered hairline fractures in the wings of yet-to-be- delivered 787 aircraft, resulting in more delays that could put the manufacture’s target delivery dates in jeopardy.

Boeing Dreamliner 787: A Timeline Of 6 Years Of Failure

This is the most recent in a string of setbacks for Boeing, which has just managed to get production of the Dreamliner boosted to 10 aircraft a month after years of delays. According to the Boeing Co. (NYSE:BA), a change in manufacturing by a Japan-based supplier, Mitsubishi Heavy Industries Ltd (TYO:7011), is what caused the fractures. Further inspections have discovered problems in other jets.

 

© Reuters. A Boeing 787 Dreamliner

This most recent problem falls hot on the heels of fleet-wide worries with the aircraft’s lithium-ion batteries and complaints from employees with Boeing's Everett factory that workers at the newly-opened Charleston plant were delivering unfinished fuselages.

The world-wide manufacturing process of the 787 has been often controversial and the reason, many industry insiders claim, for the many issues discovered. This was underlined at the Dubai airshow in 2013 when the CEO of Emirates Airline said that he would prefer that the 777X aircraft, the most recent from Boeing, was built in one location in order to avoid problems similar to those experienced by the 787.

Here’s a timeline of problems the aircraft has experienced over the last 5 years.

Pre-Launch Problems

Sept 5, 2007: A shortage of fasteners and incomplete software cause three-month delay to first flight.

Oct 10, 2007: More software issues cause further three-month delay, and six-month delay to first deliveries because of international and domestic supply changes.

Jan 16, 2008: Another three-month delay announced to first flight.

Apr 9, 2008: Boeing announces fourth delay. First flight is rescheduled until late 2008 and initial deliveries are put on hold until September 2009.

Nov 4, 2008: Boeing staff go on strike and continued fastener problems mean first flight is rescheduled for mid-2009. Various airlines claim they will sue Boeing for compensation.

June 15, 2009: In front of the aviation world at the Paris Air Show, Boeing claims the first flight will take place within two weeks. A little over a week later, Boeing cancels the first flight and reschedule for late 2009.

Dec 15, 2009: Two years late, the aircraft finally makes its maiden flight after making high-speed taxi tests three days earlier.

June 2010: Fleet-wide problems on horizontal stabilizers mean all aircraft in the test fleet are inspected and repaired.

Aug 2, 2010: The Trent 1000 engine, one of two used by the airplane, suffers a blowout at a Rolls-Royce facility. First delivery to Japan's All Nippon Airways, a unit of ANA Holdings Inc (TYO:9202), is delayed until February 2011.

Nov 9, 2010: During a test flight above Texas, a 787 experiences an electrical fire and is forced to make an emergency landing. All test flights are suspended until Dec. 23.

January 2011: First delivery rescheduled until September 2011 due to electrical and software problems resulting from the in-flight fire.

Aug 26, 2011: Boeing receives approval from the U.S. Federal Aviation Administration and European Air Safety Agency, enabling deliveries to commence.

Sept 25, 2011: Three years behind schedule, ANA receives the first Dreamliner.

Oct 26, 2011: First commercial flight takes place between Tokyo-Narita and Hong Kong. Some seats fetch as much as $34,000 because of high demand from aviation enthusiasts.

Post-Launch problems

Feb 6, 2012: Boeing a manufacturing problem in in the fuselage section of some Dreamliners.

July 23, 2012: ANA has five aircraft repaired after discovering a problem inside the Rolls-Royce engine.

July 28, 2012: A Dreamliner suffers an engine failure on the ground at the Boeing plant in Charleston, South Carolina. An investigation is announced by U.S. authorities.

Sept 5, 2012: A hydraulic problem inside an ANA 787 causes the pilot to abort take-off. White smoke is seen billowing from the aircraft.

Oct 4 2012: An engine problem onboard an Air Bridge Cargo 747 in Shanghai prompts General Electric (NYSE:GE) to recommend the inspection of GEnx engines, which are used on some 747 and 787 aircraft.

Dec 5, 2012: A report of fuel leaks prompts the FAA to order the inspection of all 787s.

Jan 7, 2013: A fire starts on an empty Japan Airlines (TYO:9201) 787 at Boston Logan International.

Jan 8, 2013: An ANA 787 is grounded after a crack in the windshield is found. Also, a JAL flight is forced to cancel after engineers discover a fuel leak.

Jan 9, 2013: United Continental Holdings Inc (NYSE:UAL) discovers faulty wiring near a battery on six of its aircraft. The National Transport Safety Board (NTSB) launches an investigation.

Jan 11, 2013: Another Japan Airlines aircraft is found to have a fuel leak.

Jan 13, 2013: Japan’s transport ministry launches an investigation after a third leak is discovered onboard a JAL aircraft.

Jan 16, 2013: An ANA flight from Tokyo to Ube, Japan, makes an emergency landing after a burning smell is detected in the cabin and a warning light comes on. ANA and JAL ground all their 787s, and aviation authorities worldwide order the grounding of all Dreamliners pending checks. Boeing halts all deliveries.

April 5, 2013: Redesigned batteries undergo final tests. Flights resume on April 26.

June 2, 2013: A sensor pressure detects overheating on one of its 787s.

June 23, 2013: United Airlines makes an emergency landing after a problem is discovered with the braking system.

July 12, 2013: An empty Ethiopian Airlines 787 develops a fire at London's Heathrow airport, which shuts down the entire airport temporarily. The fire was caused by a faulty battery.

July 18, 2013: A maintenance message onboard a JAL flight alerts to a fuel pump error.

July 22, 2013: An electrical panel grounds a Qatar Airways 787.

July 24, 2013: An investigation is launched after an oven overheats aboard an Air India flight.

July 26, 2013: Two ANA-operated Dreamliners are found to have faulty battery wiring, the same problem that caused the fire at Heathrow.

July 27: 2013: United Airlines discovers a problem with an emergency beacon.

Aug 27, 2013: A problem with slats (extensions of the leading edge of the wing deployed, like the trailing-edge flaps, during takeoff and landing for added lift) forces a JAL 787 to turn back to Tokyo.

Sept 19, 2013: A United Airlines 787 develops similar flaps problems and is forced to declare emergency and land in Anchorage.

Sept 28, 2013: Technical problems with a transponder prompt a LOT Polish Airlines flight to make an emergency landing in Iceland.

Oct 9, 2013: Electrical problems caused failed lavatories and the failure of inflight anti-ice systems on a JAL aircraft, which returned to San Diego.

Nov 16, 2013: A British Airways flight experiences hydraulic failure.

Jan 14, 2014: Full Japan Airlines Dreamliner fleet grounded after more battery problems.

Jan 19, 2014: Air India flight loses all transponders.

Jan 19, 2014: A China Southern 787 receives multiple system messages, including flaps, nose gear landing, nose gear position, doors and brakes.

Feb 5, 2014: All management computers fail onboard Air India flight.

March 5, 2014: Cracks discovered on wings of 40 787s in production.

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O DH Comet foi inovador em sua época e teve um início muito pior que o do 787 (centenas de vidas humanas perdidas). Graças a Deus nenhuma vida se perdeu nos incidentes com o 787.

Mas eu não lembro de ter dado tantos problemas em 767, 757 e 777 e os mesmos também trouxeram muitas inovações tecnológicas. E o Concorde então? Creio que a alternativa de vários fornecedores globais agrega problemas ao controle de qualidade e talvez um projeto feito "as pressas" ou melhor, deveria ter um tempo maior de pesquisa e teste em tempos de projeto. Lembra a Microsoft de uns tempos atrás que para cumprir data de lançamento soltava os produtos sem estarem devidamente testados e os usuários encontravam dezenas de problemas...

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É...Não se fazem mais aviões como antigamente

 

 

Só sei que a Fábrica de Buzu Alado(Airbus) tá voando em céu cavok, dando frouxos de risos com as mancadas da Boeing

 

787 com bateria e asa zicada, SSJ pior que o mais surrado TU-154.

 

787 = Comet do Século 21.

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Incrivel como o 787 está tendo um histórico de problemas.

Isso é bom para que as unidades certificadoras repensem seus procedimentos de provas. Mesmo com toda a tecnologia, todos os estudos, sempre falhas acontecerão, principalmente quando se substitui compostos que já tiveram seu nível de stress ao máximo para novos.

Será que esses elementos estão realmente sendo testados em todos os seus limites?

 

A boeing acumulou um caderno gigante de lições aprendidas com o 787 e com certeza para os próximos novos projetos, isso será aproveitado.

De certa forma, olhando por este ponto de vista, se um dia a Airbus resolver fazer uma mudança tão drastica assim, ela: a) terá aprendido com os erros da Boeing ou b) passará pelo mesmo calvario.

 

Agora, o que não pode mais acontecer é descobrir falhas estruturais em equipamentos já utilizados comercialmente.

Se isso novamente se repetir, será um tiro no pé não só da Boeing e também na de quem certificou este modelo.

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