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  • [narrator] Its sheer size astonishes.

  • It's as tall as a 6-story building,

  • 2/3 as long as an American football field, and it's made of 6 million parts.

  • And oh, yeah, it flies.

  • In fact, early versions have carried more thanbillion people,

  • the equivalent of 80% of the world's population.

  • Now Boeing has reinvented the iconic 747,

  • a task just as monumental as the airplane itself.

  • [747-8 Engine Integration]

  • [Grace Balut Ostrom] [Associate Technical Fellow, Boeing Propulsion Controls Group]

  • The 747-8 is our new version of the 747.

  • We've changed it. We've upgraded it.

  • To bring about that change you have to be innovative.

  • You have to be innovative and creative.

  • You have to think of new solutions and new methods of

  • bringing upon the changes that you're looking for.

  • [narrator] Adding a new wing to a jetliner is a very big task.

  • Adding 4 gigantic new engines at the same time is like designing a whole new airplane.

  • Making the job even more challenging,

  • airlines wanted the 747-8 to feel and fly like Legacy 747s

  • that pilots and passengers know and love.

  • This commonality saves airlines millions in flight crew training.

  • [Ostrom] What my job entails is integrating

  • a complex system like the engine onto a complex system like an airplane

  • to make sure that the engine computer communicates with the airplane computers

  • and the airplane computers work with the engine computers.

  • [narrator] For a number of reasons, it's essential that the new wing,

  • engines, and airplane systems work in perfect combination.

  • That's why the Boeing engine controls team spent months in some

  • of the most advanced labs of their kind.

  • The team tested every imaginable scenario before an engine

  • was ever placed on the wing.

  • [Ostrom] People don't see behind the scenes

  • how much work we put into it.

  • And then we have an extensive flight test program where we

  • run the system through the wringers.

  • [narrator] The new Queen of the Skies is called the 747-8

  • because it's based on 787 technology.

  • The wing is lighter with greatly improved aerodynamics,

  • and the engines are the cleanest, quietest, and most fuel-efficient

  • turbofans ever built for an aircraft of this size.

  • [Ostrom] On the propulsion side, the 2 big improvements are

  • fuel efficiency and a 30% reduction in noise

  • compared to its predecessor, the 747-400.

  • [narrator] With its new wing and engines, the 747-8

  • is powerful enough to lift nearly a million pounds and fly

  • almost 8,000 nautical miles.

  • But chances are, the only difference most passengers will ever feel

  • is that their flight is quieter, which for some people is a really good thing.

  • [Boeing - Copyright@ 2012. All rights reserved]

[narrator] Its sheer size astonishes.

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B1 中級

波音747-8發動機:動力的平衡性 (Boeing 747-8 Engine: Balance of Power)

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    鄧誌成 發佈於 2021 年 01 月 14 日
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scenario

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essential

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