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By the end of this year, European aircraft manufacturing consortium Airbus plans to deliver the first of its new, extra-wide-body passenger jets, the A350-XWB. Among other technological innovations, the new plane will also incorporate metal parts made in a 3-D printer.
The high price of today’s air fares is due in large part to the cost of fuel, which is why manufacturers are striving to build lighter planes, with more efficient engines and more seats.
The bodies of modern jets, like Boeing’s 787 Dreamliner, are made from composite materials, usually carbon-reinforced plastic.
Some plastic parts created in a 3-D printer are already incorporated into the Airbus A350 jet. But the new model XWB will be the first with parts printed with titanium. Airbus emerging technologies manager Peter Sander says technicians learned to print even geometrically very complex shapes.
“Normally this is a part of the fuel system, it's two pipes in one, and it's normally welded out of 10 parts," he said. "So in this case, with 3-D printing we have the chance to integrate the bracket of the pipe and two pipes at once and print it in one shot.”
3-D printing is also a solution when parts are no longer available. Sander says when Airbus engineers needed a discontinued spare part for seats, it was easy to print perfect copies.
“So we did a redesign in a week and printing in a week. So the redesign itself cost two hours, we took the manual drawing, redesigned it and put it on the desk one week later to the spare part guys,” he said.
The technology is developing rapidly and one can easily imagine entire aircraft assembled out of printed parts.
Airbus executive Axel Krein says it will take a long time, but notes that in the meantime, the number of printed parts will keep increasing.
“We are investing a lot of money in aerodynamic improvement, in material, in noise reduction, etc., but 3-D printing is probably the area with the highest gain over time,” he said.
As a sign of things to come, the giant U.S. conglomerate General Electric says it is investing $50 million in a plant that will print fuel nozzles for its aircraft engines.
【相關閱讀】1、suit
1、套裝，衣服。
You look great in your new suit. 你穿上新衣服後看上去棒極了。
I bought a good suit in a clothing store. 我在衣服店裡買了一套很好的套裝。
2、一套公寓。這個意思必須根據後文來進行判斷。
I bought a new suit in the central city this year. 我今年在市中心買了套公寓。
3、適合。
I hope it will suit you, sir. 我希望它能適合你，先生。
2、take
1、take a picture of 給……照相
Could you take a picture of me with the lake in the background?
你能以湖為背景給我照張像嗎?
2、take good care of 好好照看
The man at the garage thinks that I take good care of my car。
修車庫的人認為我非常愛惜自己的車。
3、tend to
傾向於，趨向於。
The paper says people tend to feel unwell if they sleep less than six hours a day。
報紙上說人如果每天睡眠少於6個小時將感到不舒服。
4、through
本意是穿越，穿過。在以下幾個搭配中分別又有了不同的含義。
1、瀏覽。 read (straight) through
I'd better read it through again. 我最好還是再通讀一次。
I didn't read straight through the way you read a novel。
我不像你讀小說那樣從頭到尾地瀏覽一遍。
2、結束、完成(工作)be (go) through
I had a hard time getting through this test. 完成測驗對我來說很難。
That only leaves us 15 minutes to go through the customs and check our baggage。
我們只有15分鐘的時間來接受海關檢查和行李檢查。
After two sleepless nights, I'm finally through with it。
經過兩個不眠之夜，我終於完成了。
3、接通。get sb through
Would you get me through to Dr. Lemon please? 能幫我接通Lemon醫生嗎?
4、睡過了。sleep through
How could you sleep through it? 你怎麼能睡過頭了呢?
5、播放出來。come through
The power indicator was on, and it was running, but somehow the sound didn't come through。
電源指示燈是亮的，並且正常工作，但是為什麼聲音就是出不來呢?
