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太陽能飛機 首度完成跨洲飛行

自由時報 2012-6-7

瑞士冒險家皮卡德駕駛他率領研發的太陽能動力飛機「陽光動力號」,五日深夜降落摩洛哥首都拉巴特薩里機場,寫下全球首次太陽能飛機完成跨洲飛行的紀錄後,興奮地振臂歡呼。這趟兩千五百公里的跨洲飛行分兩階段,先從瑞士飛到西班牙馬德里,因天候不佳耽擱幾天後,五日黎明前從馬德里起飛,跨越直布羅陀海峽,花十九小時飛了八百三十公里抵達北非摩洛哥,途中最高飛行高度八千兩百二十九公尺,最快速度超過時速一百二十公里,「陽光動力號」翼展長如波音七七七型飛機,但重量僅如一般家庭房車,是首架白天、夜晚都可飛行的太陽能飛機。(法新社)


Solar-Powered Plane Lands in Morocco

By PAUL SCHEMM Associated Press RABAT, Morocco June 5, 2012 (AP)

An experimental solar-powered plane landed in Morocco's capital late Tuesday after a 20-hour trip from Madrid in the first transcontinental flight by a craft of its type.

With the wing span of a Boeing 777, the plane appeared out of the pitch darkness over the runway, suddenly turning on its lights and gliding to a landing in Rabat, the four propellors that flew it already silent.

The single-seat aircraft is fitted with 12,000 solar cells across its immense wings and weighs just as much as the average family car, according to organizers.

The plane is the first of its kind to fly both during the night and day as the solar panels charge the batteries that power its turbo-props.

Pilot Bertrand Piccard descended from the plane and said the Solar Impulse project had chosen Morocco because of its pioneering work in solar energy.

"This is why we wanted to be here," he said. "This is why we accepted the invitation of the Moroccan solar energy agency.

Morocco is set to begin construction on a huge solar energy farm in the south as part of an ambitious project to lessen its dependence on fossil fuels.

Solar Impulse arrived from Switzerland in late May on the first leg of the journey.

The mission is being described as a final dress rehearsal for a round-the-world flight with a new and improved plane in 2014.

The project began in 2003 and is estimated to cost about $100 million over 10 years.

The two-leg Europe to Africa trip covers 2,500 kilometers (1,554 miles).


Solar Power - Featured Article

Sun Powers Plane from Switzerland to Spain to Morocco

Edited by Brooke Neuman  June 05, 2012

Though it’s hard to imagine a time before airplanes, it might be even harder to imagine a time when an airplane could fly across continents powered by the sun. Well put your imaginations to work because that time is now. An experimental plane from the company Solar Impulse is currently on its way from Madrid to Morocco. The trip is the last leg of its journey from Switzerland to Africa, which in total covers 2,500 kilometers (1,554 miles).

The journey is the single-seat aircraft’s first transcontinental flight, as well as a final dress rehearsal for the planned round-the-world flight set to take off in 2014 with an improved plane. The aircraft is reportedly the size of a jumbo jet, and is fitted with 12,000 solar panels. In a statement released Tuesday, organizers named the Moroccan capital Rabat to be the plane’s end-point late Tuesday night. The plane took off from Spain before dawn Tuesday morning.

The plane’s journey is not a cheap one—the project to get the solar-powered plane off the ground and running cost an estimated $100 million over the last ten years. It began in 2003, just when solar power was becoming an actuality, and today the technology is steadily gaining popularity across the globe. The use of sunlight to create electricity is employed by people looking to cut costs, as well as those with an environmental awareness.

Solar power can be created in a number of ways, including the use of solar panels or photovoltaics (PV), or concentrated solar power (CSP (News - Alert)), which uses lenses or mirrors to focus light beams and create heat, which in turn gets connected to a power generator. The Solar Impulse plane has the 12,000 solar cells fitted in its wings which turn four electrical motors, all of which charge lithium polymer batteries during the day to enable flight after dark.

This voyage was timed to coincide with the launch of construction on the largest-ever solar thermal plant in southern Morocco, but the goal is to encourage the expansion of solar power technology throughout the world.  

In the United States alone, solar power use is reaching unprecedented levels. A new study released by GTM Research expects the current $1 billion market to reach $8 billion by 2015, as more small power devices and even entire homes are making a change to solar power.  

The industry has become the fastest-growing electric source in the United States as of last year, according to a report by the Solar Electric Power Association (SEPA), and the innovative technology is gaining traction worldwide. Petra Solar announced on May 21 that it will deploy a five-megawatt (MW) grid-tied PV solar plant in the Kingdom of Bahrain off the Persian Gulf, the first project of its kind in the region. Guatam Polymers, in India, is looking to solve substantial power problems throughout the country with its new Solid Solar panels, and researchers in Iran have received a U.S. patent for their work in restructuring of solar cells.

Word is catching on, and the innovation offered by solar power is catching flight. Bertrand Piccard, the 54-year-old psychiatrist and balloonist, who manned the Solar Impulse plane for the second leg of its trip, said the flight was envisioned as a way “to demonstrate that we can achieve incredible goals, almost impossible goals with new technologies, without fuel, just with solar energy, and raise awareness that if we can do it in the air of course everybody can do it on the ground.”

The flight is available to watch in real-time on the Solar Impulse website.


Solar Airplane to Attempt 48-Hour Flight to Morocco

March 29, 2012 By Zachary Shahan

Over on sister site CleanTechnica, I’ve written about the Swiss solar plane known as the Solar Impulse many times. The people behind the world-record-holding plane have now announced that they’re soon going to attempt its longest journey to date, which would set another world record. It will soon attempt a flight from Switzerland to Morocco that is projected to take 48 hours.

“After its inaugural flight to Paris and Brussels in 2011, Bertrand Piccard and Andre Borschberg’s solar airplane will attempt, for the first time ever, to fly over 2,500 km (1,550 miles) without using a drop of fuel, finally landing in Morocco,” Solar Impulse just announced this week.

Piccard will fly part of the way and Borschberg the rest of the way, probably making the switch near Madrid, all the while not using any fuel beyond what the sun provides.

This trip, planned for May or June of this year, is a sort of prep flight for a 2014 around-the-world trip.

Solar Impulse Background
 
The Solar Impulse set a record in 2010 for being the 1st solar plane to fly for 24 hours straight. The plane then made its 1st international flight in 2011. It first flew in 2009. Here’s a video of that:

http://www.youtube.com/watch?feature=player_embedded&v=Qa-DPz0K1S0

While flights in this plane may not be very practical for most people right now, think about how fast we’ve transitioned from the Wright brother’s early, dinky planes to the jets we fly in today. Also, this plane is really just a testament to the tremendous leaps and bounds we’ve made in the solar power sector in general in the past few decades (or even just the past few years). Kudos to the great folks in the solar sector moving us forward and the great folks involved in the solar impulse project — hopefully it encourages and inspires more people to go solar!

Image Credit: Solar Impulse/Stéphane Gros


仿鯊魚皮塗料 飛機更省油

自由時報 2013-2-19

〔編譯管淑平/綜合報導〕為追求具備更好空氣動力學性能、更省油的飛機,航空業現在鎖定海洋古老掠食動物鯊魚掌握的節能關鍵。德國最大的「漢莎航空」(Lufthansa)將測試一種新塗料,可讓飛機外層表面猶如覆上鯊魚皮,以降低阻力、達到節能省油效果。

降低擾流 減少阻力

這種試圖模仿鯊魚皮特性的塗料,由不來梅的「弗勞恩霍夫製造科技與先進材料研究所」(IFAM)研發,漢莎航空今夏將在旗下2架空中巴士A340-300型客機展開2年試驗。飛機燃料箱、機翼邊緣將塗上8片各10公分見方的新型塗料,測試這種仿鯊魚皮特性,在實際飛行環境下的性能和耐用度。若結果良好,下階段將測試更大面積塗佈的效果。

鯊魚皮的鱗片上布滿許多微小溝槽結構,讓鯊魚快速移動時得以降低擾流、減少阻力。鯊魚皮流線特性已為科學界所知30年,在軍事應用、航太、航空以及船艦建造和風力技術等領域都令專家著迷;近年鯊魚皮的特性被應用於游泳運動領域,使其更廣受注意。

該研究計畫負責人史坦澤(Volkmar Stenzel)說,過去也曾測試過將仿鯊魚皮的塑膠箔皮黏在飛機外層,「但是它相當重,增加的重量抵銷可能省下的燃油量」,「而且,箔皮黏附在有弧度的表面,很難不出現皺摺。」另一個問題是,飛機每5年就得褪除舊漆、塗上新漆,使用這種箔皮將無法重新噴漆。

據估計,一架飛機若有40%到70%表面塗上這種新塗料,就能以非常少的費用,減少約1%的油耗。

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