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A Pollution-Free Trans-America Flight, Courtesy Of The Sun

A Pollution-Free Trans-America Flight, Courtesy Of The Sun

Between hotdogs, fireworks, and lots of hijinks at the U.S. Supreme Court, you probably missed it but history was made last week, and in almost complete silence.

The Solar Impulse, a solar-powered airplane created by Swiss aviation pioneers Bertrand Piccard and André Borschberg, completed its Mission Across America–a cross-country flight that aimed to demonstrate just how versatile solar power can be.

The mission began in San Francisco on May 3rd and, despite inclement weather in the Midwest, it landed on July 6th at New York City’s John F. Kennedy International Airport no worse for wear.

Although it’s not the first solar airplane to take flight in America, according to the Solar Impulse team, it was “the first time that an airplane, capable of flying 24 hours non-stop day and night powered exclusively by solar energy, [flew] across America.”

In order to achieve its mission, the Solar Impulse was outfitted with a 208 ft. wingspan, 4 brushless, sensorless electric engines, and 11,628 monocrystalline silicon solar cells. The solar cells are spread out along the entire length of both wings and the horizontal stabilizer.

“At midday, each square meter of land surface receives, in the form of light energy, the equivalent of 1000 watts, or 1.3 horsepower of light power,” report the designers. “Over 24 hours, this sun energy averages out at just 250W/m². With 200m² of photovoltaic cells and a 12 % total efficiency of the propulsion chain, the plane’s motors achieve an average power of 8 HP or 6kW.”

Surplus solar energy collected throughout the day is stored in on-board batteries. Although the Solar Impulse pilots choose to glide without power at night whenever possible, this stored energy can be accessed and used to power the motors if necessary. Thanks to this technology, the plane can fly straight through from day to night without stopping.

The implications of the Solar Impulse’s achievement are massive. First, it proves that long-distance flight is possibly without burning any fuels, whether plant-based or petroleum. It also proves that people are interested in the myriad of ways solar energy can be put to use in our daily lives, and they’re cheering for more!

Say the engineers:

Our primary objective was to show that today’s technological innovations can achieve incredible things, like flying day and night powered only by solar energy without using any fuel, nor producing polluting emissions. That first step has now been reached.

But Solar Impulse is first and foremost an extraordinary human and scientific adventure that brings emotions back at the heart of scientific exploration; a revolutionary innovation conceived to be a unique flying laboratory for clean technologies; a vision driven by the pioneering spirit behind all great human adventures; an experimental journey to inspire others to be pioneers and innovators in their everyday life.

Unlike the creators of many advanced technologies, the Solar Impulse crew is interested in more than fame and fortune. As co-creator Bertrand Piccard likes to say: “Our airplane is not designed to carry passengers, but to carry a message.”

One way they’re spreading the message of clean energy is through the Solar Impulse Pedagogical Program. It is the project’s communication platform for young people, the ‘mouthpiece’ of its symbolic and philosophical values.

“It highlights the adventure, technology and scientific research elements of the project in order to develop young people’s curiosity, their taste for exploration and discovery and their pioneering spirit.”

So what’s next for this adventurous team of solar lovers? A trip around the world, of course:

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Image via Solar Impulse

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55 comments

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6:14AM PDT on Aug 4, 2013

thanks for sharing :)

9:56PM PDT on Jul 18, 2013

This is some of the best news, I've heard, lately.

To Syd H.: Your cynicism bewilders me. Every new idea, has to start somewhere. Why are you critical of an achievement that may be of benefit to our planet?
I don't think you really want to talk about waste. That will get your point, NOWHERE.

6:10PM PDT on Jul 15, 2013

Thank you Beth for a very informative and exciting article. It was great news for the solar pollution free trans air flight. It was a success, and now maybe more people will get behind the project and give more financial backing.to other ways of using solar power and we can finally get out from under dirty energy's grip. I enjoyed reading the over 50 comments from the members.also.

9:12AM PDT on Jul 15, 2013

ty

6:03AM PDT on Jul 15, 2013

Thanks for sharing.

4:51PM PDT on Jul 14, 2013

Wow . . . . .

11:52AM PDT on Jul 14, 2013

Interesting. Thank you for sharing.

10:00AM PDT on Jul 14, 2013

Syd H., you have a definate point on this take. We are still at the mercy of the oil industry that has no intention of going away any time soon. Also, I would say that all of the materials used from mining to smelting, electricity, assembly, etc... in making the craft are not exactly pollution-free. We can only hope that alternative energies, production and transport become available to ALL and not the top 1%.

4:59AM PDT on Jul 14, 2013

Hope this technology can be widely used

5:55PM PDT on Jul 13, 2013

Awesome! Look at the Wright brothers first flight which evolved into jets and spacecraft. This is the beginning.

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Beth Buczynski Beth is a freelance writer and editor living in the Rocky Mountain West. So far, Beth has lived in... more
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