From the street, Audi’s A8 L Security Sedan looks like any other no-nonsense vehicle out of Germany. Professionally serious with sedate, yet luxurious design elements, the A8 L Security is anything but flashy. However, upon closer inspection the new 500-hp luxury bulletproof sedan is anything but your average grocery getter.
Slovakian mechanical engineer Braňo Mereš has created some pretty nifty one-off bicycle frames over the past several years. Some of his construction materials have included riveted-together strips of titanium, a woven bamboo fiber/epoxy resin composite, and carbon fiber rods. With his latest creation, the X-9 Nighthawk, he has taken yet another approach – the frame is made from sandwich panels that have an aramid core and carbon fiber skins.
has come a long way since the days tall ships were carried along by billowing clouds of canvas. In fact, new aerodynamic discoveries coupled with exotic materials have turned modern sails into veritable works of high tech art. Today, sailmakers know that the less a sail distorts (through stretching, shear, compression or shrinkage) the more force or drive remains available to power the boat - especially helpful when you're in a close race for that final buoy. Now, the innovative designers at North Sails have woven an interesting array of tricks into their unique new 3Di line of "canvas" - laminated, heat-molded sails that hold their shape so well, they come close to performing like rigid airfoils.