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profession: pilot career: actor - Jet Aviation

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Any new construction in composite materials starts with the creation of a wooden plug<br />

in an epoxy resin. These layers are then<br />

exposed to a vacuum, which compresses<br />

the carbon mat, so that the fibers bind<br />

uniformly and there are as few air pockets<br />

as possible. This creates the outside<br />

“skin” of the Alinghi, which is only about<br />

3 mm thick.<br />

The honeycomb, made of aluminum and<br />

aramid, is put on top of that skin, and<br />

then another layer of the carbon fiber is<br />

placed on top of the honeycomb, creating<br />

the sandwich. The whole thing is baked<br />

in an oven for 15 hours, during which<br />

time the epoxy in the outside layers melts<br />

and binds the materials.<br />

This carbon composite is lighter and<br />

more rigid than steel or aluminum.<br />

Unlike the metals, however, the material<br />

cannot carry an equal load in all<br />

directions. It is strong in the direction<br />

of the long carbon fibers and weak at<br />

a 90-degree angle to the fibers. This<br />

makes it very important to know exactly<br />

where the strain on a structure will be.<br />

Once that is known, weight can be saved<br />

by providing extra strength only where it<br />

is needed.<br />

A wide range of applications<br />

Decision has made many sailboats using<br />

processes similar to those used for the<br />

Alinghis, including the 10 boats in its<br />

Decision 35 series. Cardis and the Swiss<br />

Multihull Owners Association came up<br />

Outlook 02/2008<br />

35

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