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Lighter, Faster Coatings for Aircrafts

Posted February 14, 2011 3:21 PM by Sharkles

As fuel prices continue to climb, airlines are scrambling to think of new, cost-saving measures. Easyjet, one of Europe's largest airlines, thinks the answer may lie in lightweight composite materials. Starting today, the company is running a trial of what they call a "revolutionary nano-technology coating."

Traditional paint coverings on Easyjet's aircrafts add an estimated 80 kg to each plane, while the new coating adds a mere 4 oz to the overall weight. Easyjet hopes that the lighter coating will reduce drag, while increasingly fuel-efficiency and saving money. The concept is not new, but is being refined thanks to advances in nanotechnology.

Before applying the nano-coating, the planes are first given a "polarizing wash," which is said to open the pores for treatment. The wash electrically charges using a positive polarity, allowing the polymer to bond to the existing surface. A shiny layer reduces debris build-up on the edge of the wings and other areas, resulting in less friction and drag on the plane's surface.

Last year, 40% of Easyjet's costs were fuel-related. With the new polymer coating, they hope to save up to 2%. At this time, the company is not saying how much it will cost to cost the eight trial planes, but says that "even a 1% saving on our fuel bill and 1% less in our carbon emissions is worth doing."

Do you think Easyjet's 2% goal is feasible?

Source: BBC News

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#1

Re: Lighter, Faster Coatings for Aircrafts

02/14/2011 3:44 PM

According to the Wiki article about EasyJet, "It is estimated they could save 1-2% annually equating to a £14m reduction in fuel costs."

This savings is the initial 8 airplanes tested. This sounds a substantial amount of money. I find no information about the expense of coating the planes, expected life of coating, maintenance issues... so hard to tell about economic feasability.

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#2

Re: Lighter, Faster Coatings for Aircrafts

02/14/2011 4:51 PM

Unless I saw some replicable wind-tunnel data, I would consider this pie-in-the-sky "projection" to be only sales hype.

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Re: Lighter, Faster Coatings for Aircrafts

02/14/2011 5:32 PM

The Wiki article says (no substantiation) that the US military is already using this, as is EasyJet. And we all know the government would not spend money on some half-baked idea.

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Re: Lighter, Faster Coatings for Aircrafts

02/16/2011 3:15 PM

We have work with nano-technology in some of the coatings used for exteriors on homes and decking. Worked on it about a year and at the time it looked good. But, all test so far for weather and wear ability have failed badly. Sort of placed it on the back burner for now until they get better at the materials science.

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#5

Re: Lighter, Faster Coatings for Aircrafts

08/16/2011 12:43 AM

I've often wondered if dimpling the leading surfaces much like a golf ball would work?

A TV show tried this on an automobile and improved the mileage significantly.

Also would a similar idea work on ships?

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