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  1. #1
    Usuario Foroaviones
    01 feb, 09

    Boeing completa la certificación de la FAA de pruebas para baterías de 787

    Se han completado los vuelos de prueba con las nuevas baterías, ahora enviaran los datos y los informes y a esperar si las FAA le dan permiso para volar o les piden mas correcciones.

    By W.J. Hennigan
    April 5, 2013, 3:01 p.m.
    Boeing Co. completed a certification demonstration flight on its 787 Dreamliner to test a proposed fix for the lithium-ion battery systems that led to the commercial jet’s grounding in January.

    The aerospace giant said the flight Friday marked the final certification test for the new battery system required by Federal Aviation Administration to get the 787 fleet airborne again.

    In the coming days, Boeing will gather and analyze the data and submit materials to the FAA. Then the company will find out whether further fixes or test flights are necessary.

    FULL COVERAGE: Boeing's troubled Dreamliner

    During the test, the 787 — a production airplane built for LOT Polish Airlines — took off from Paine Field in Everett, Wash., and flew for 1 hour 49 minutes before landing back at the airfield. There was a crew of 11 on board, including two FAA representatives.

    “The crew reported that the certification demonstration plan was straightforward and the flight was uneventful,” Boeing said. “The purpose of the flight was to demonstrate that the new battery system performs as intended during normal and non-normal flight conditions.”

    Boeing officials have been busy addressing concerns about the company's new flagship jet, which has been grounded worldwide since Jan. 16 after two overheating incidents within two weeks involving the battery systems.

    On March 14, the Chicago company unveiled a plan to fix the 787 battery system. It involves insulating and spacing out parts in the battery unit, reducing charging levels so the battery cannot be overcharged and enclosing the lithium-ion batteries in stainless-steel cases so little oxygen can get at them.

    The redesign removes any risk of a fire breaking out within the battery system, the company said.

    Boeing has delivered 50 787s to eight airlines worldwide. Six are owned by United Airlines -- the only U.S. carrier that has 787s in its fleet.

    But all 787s were grounded after a battery fire broke out Jan. 6 on a 787 operated by Japan Airlines at Boston's Logan International Airport and then a second battery incident occurred 10 days later on an All Nippon Airways flight in Japan.

    The 787's battery system, which is made in Japan by Kyoto-based GS Yuasa Corp., contains a cluster of eight individual cells packaged together in one box.

    The National Transportation Safety Board has been investigating the matter, as have officials from Boeing, the FAA, the Navy, Japan and France.

    Not one of them has found a root cause for the incidents.

    Despite the problems, Boeing's stock is up 12% this year so far, closing Friday at $86.17.
    Boeing completes FAA certification testing for 787 batteries - latimes.com
    Distinguir a un aerotrastornado es fácil, en medio de una multitud cuando oiga el sonido de un avión surcando los cielos. Levantara la mirada hasta establecer contacto visual con el avión, da igual el numero de veces que lo haya visto.

  2. #2
    Pluscuamperfecto eh ya!
    28 may, 10
    No creo que tengan problemas cuando ellos se certifican a si mismos.

  3. #3
    Usuario Foroaviones
    02 mar, 10
    Yo creo que si habrá problemas..

    PackardBell Easynote TM85 / I3 380M 2,53 GHZ / ATI 5470 M 512 MB / 4GB RAM DDR3 /1 TB USB 2 -FSX SP2 W7X64-
    Mac Os x Mountain Lion 10.8.5 Yosemite 10.10.5

    ¡Triste época la nuestra! Es más fácil desintegrar un átomo que un prejuicio.
    Albert Einstein

  4. #4
    Pluscuamperfecto eh ya!
    28 may, 10
    Cita Iniciado por vaca Ver Mensaje
    Yo creo que si habrá problemas..
    digo problemas para certificarlo otra cosa es luego como funcione.

  5. #5
    Ciegando a Volas
    01 sep, 09
    Aquí la primera imágen de las nuevas baterías modificadas:


    "Nadie está obligado a leer. Si no te interesa, no pierdas el tiempo.
    Y si lees... pues allá tú, luego no digas que no te avisé."

    Si no te gusta lo que escribo o cómo lo escribo:
    (a) Acéptame, tal como soy. - (b) Añádeme a tu lista de ignorados, tal como soy.
    Cualquiera de esas dos formas harán que deje de molestarte mi presencia.

  6. #6
    Usuario Foroaviones
    30 sep, 12
    Jajajajajajajajaja!!!! Esta la peña graciosilla hoy jajajaja

    Enviado desde Cantabria Infinita usando Tapatalk 2

  7. #7
    Usuario Foroaviones
    01 abr, 11
    Cita Iniciado por FenixDigital Ver Mensaje
    Aquí la primera imágen de las nuevas baterías modificadas:

    Te has adelantado jajajajajajajaja somos muy previsibles jajajajajaa

  8. #8
    Usuario Foroaviones
    01 feb, 09
    Boeing tiene ya varios equipos de "fuerzas especiales" esperando a ponerse a cambiar como locos las baterías, las cajas portadoras y hacerles un agujero en el fuselaje para expulsar los gases fuera si hay problemas.

    El mejor escenario que se contempla es que se autorice el cambio este mes, se empiece a volar el 1 de mayo y se opere normalmente en junio.

    Federal Aviation Administration officials flew aboard a Boeing 787 for a test of the airliner’s new battery system that included “normal and non-normal flight conditions” and went off without a hitch.

    The “non-normal” flight conditions included “simulating failed engines, generators, pumps and other equipment on the airplane,” Boeing spokesman Marc Birtel said. The rigorous 1 hour, 51 minute flight up and down the Oregon and Washington coast was meant to show the FAA that Boeing has solved a battery problem that led to “thermal runaway” aboard aboard 787 Dreamliners in Boston and Japan. All 50 Dreamliners in service worldwide have been grounded since January 16 because of the problem.

    Boeing has spent weeks designing and testing improvements to the 63-pound lithium-ion battery after problems arose aboard a Dreamliner at the gate at Logan International Airport and another in flight over Japan. In both cases, the batteries were severely damaged by heat, but damage to the planes was limited to the area immediately surrounding the batteries, one of which is located in the nose of the 787, the other near the middle of the aircraft.

    The redesign includes improved separation of individual lithium-ion cells to minimize the chance of what Boeing is calling thermal propagation but the National Transportation Safety Board characterized as thermal runaway. The added insulation is designed to minimize the chance of an overheated cell propagating when one of the eight cells experiences a short circuit.

    The new design also houses the battery in a heavy-duty sealed stainless steel box vented directly to the exterior of the fuselage. Boeing believes the new system eliminates the chance of a battery fire. At a press conference in Japan last month, the company even showed a test where propane was purposely ignited inside the steel box, which easily contained the small explosion.

    Boeing has tested the new design in the lab and on the ground aboard a flight test aircraft, and in the air aboard a 787 built for LOT Airlines of Poland. Ground testing included “battery failure venting in the containment housing,” Birtel said. The FAA will now examine the data from Friday’s flight as well as information gleaned from other tests. It is widely expected to approve the redesign, which would allow the aircraft to resume passenger service soon.

    Although the Dreamliner has garnered widespread attention for its use of composite materials and fly-by-wire technology, the aircraft is no less groundbreaking for its extensive use of electrical systems instead of hydraulics. The two large lithium-ion batteries aboard each 787 power some systems while on the ground, including starting the auxiliary power unit, as well as serving as back-up power in the event of a loss of power during flight.

    The battery’s original design was criticized by some experts, including Tesla Motors CEO Elon Musk, as being overly simplistic. The NTSB also was critical of the meltdowns, noting they happened far more frequently than Boeing’s initial prediction that we’d see one for every 10 million flight hours. Both occurred after roughly 50,000 hours of flying time.

    Boeing says it has several mechanic teams ready to deploy worldwide to retrofit the new batteries in each of the 50 grounded Dreamliners. The teams are drawn from Boeing’s AOG (aircraft-on-ground) mechanics, a sort of “special forces” team that is always standing by to assist Boeing customers anywhere in the world. The mechanics will install the new batteries and boxes, as well as drill a small hole in the fuselage of each airplane to allow for the venting of gasses should a battery fail in the future.

    There is no timetable for when the analysis will be completed by the FAA, or if more testing will needed. A best case scenario would likely include FAA approval this month and then several weeks for to retrofit the grounded aircraft.

    United has indicated it plans on flying the 787 again by May 31, and world-wide service is expected by June.

    Boeing is about to run out of parking space outside its factory in Everett, Washington where the 787 along with the 747, 767 and 777 are also built. The company is renting space all around Paine Field, including an unused runway that currently has several partially finished Dreamliners parked nose to tail towering over the smaller, general aviation aircraft at the airport.
    Boeing Completes Final 787 Battery Test, Awaits FAA Approval | Autopia | Wired.com
    Distinguir a un aerotrastornado es fácil, en medio de una multitud cuando oiga el sonido de un avión surcando los cielos. Levantara la mirada hasta establecer contacto visual con el avión, da igual el numero de veces que lo haya visto.

  9. #9
    Буран & Энергия
    02 ene, 09
    Байконур Космо.
    Bueno, pues a ver si lo vemos dentro de poco volando!!!

  10. #10
    01 ene, 11
    Perpignan Francia
    Airworthiness directives

    El Gobierno de EE.UU. aprueba un nuevo sistema de baterías para aviones Boeing 787

    La Dirección Federal de Aeronáutica de EEUU aprobó hoy un nuevo sistema de baterías de ión de litio para los aviones Dreamliner 787, de Boeing, después de tres meses de suspensión de los vuelos de esas aeronaves.

    La ordenanza de la agencia, conocida por su sigla FAA en inglés, se aplica, técnicamente, sólo a la aerolínea United, que es la única en Estados Unidos que cuenta con los aviones a reacción, pero establece la norma que seguirán las autoridades en Europa, Japón y otras partes.

    Las otras aerolíneas estadounidenses que han encargado aviones 787 de Boeing eventualmente deberán atenerse a esta nueva regla.

    La FAA calculó que el costo para la reparación de los seis aviones Dreamliner que posee United será de unos 2,8 millones de dólares.

    En enero pasado, en un período de menos de dos semanas, hubo dos incidentes separados por el recalentamiento de las baterías de ión de litio de aviones Dreamliner.

    Ambos aparatos están en los inventarios de Aerolíneas de Japón (Japan Airlines) y de All Nippon, que en conjunto poseen casi la mitad de los 50 Dreamliner entregados hasta ahora por los fabricantes.
    El Gobierno de EE.UU. aprueba un nuevo sistema de baterías para aviones Boeing 787 | Economía | EL PAÍS

    Japón autoriza la reanudación de las operaciones de los Boeing 787 Dreamliner | Economía | EL PAÍS

    un saludo



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