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segunda-feira, 12 de julho de 2010

Novidades

Um Robot voador que pousa em qualquer lado:


Video: Insect-Like Pincers Allow Flying Swarmbots To Perch On Nearly Any Surface

07-10-2010 • John Mahoney via PopSci


A swarm of buzzing dragonfly bots passes overhead. Suddenly, they make a kamakaze dive toward a nearby tree--but wait a minute, instead of crashing and careening to the ground, they're sticking to the tree. Resting, recharging, waiting for orders. All thanks to Mirko Kovac's new system allowing swarming robots to perch on nearly any surface, then take off again.

Working out of Switzerland's École Polytechnique Fédérale in Lausanne, Kovac's mechanism uses two needles mounted to the front of a small glider or robo-copter. When extended, the 'bot can fly straight into the surface it intends for its perch--no additional landing maneuver's necessary. When it's time to take off again, an electric motor and gearbox connected to the needles pulls them out, and flight resumes. Kovac claims the needles work on a variety of different surfaces, including concrete and wood. The whole assembly weighs just 4.6 grams. 


Notícias da NASA, um Robot que vai aterrar directamente sobre as suas rodas, em Marte:
NASA's Curiosity Mars Rover Gets New Steering System, Will be First Rover to Land Directly on its Wheels
By Laurie J. Schmidt Posted 07.08.2010 at 1:29 pm

The next Mars rover, Curiosity, has been outfitted with a new cutting-edge mobility system that's enough to make off-road enthusiasts drool with envy. The rover, which will carry ten times the payload mass of Spirit and Opportunity, is about the size of an SUV, and too heavy for an airbag landing.
It has a set of six wheels that are 20 inches in diameter -- larger than a car tire. Each wheel has its own motor, giving the rover independent six-wheel drive, and "cleats" that provide grip and help keep the rover from slipping when climbing over rocks or sand hills. The rover can also do swerving maneuvers and turn in place a full 360 degrees.
 ...E foi encontrada a legendária Távola Redonda do Rei Artur:

Historians locate King Arthur's Round Table

Historians claim to have finally located the site of King Arthur’s Round Table – and believe it could have seated 1,000 people

By Martin Evans
Published: 11:46AM BST 11 Jul 2010

Researchers exploring the legend of Britain’s most famous Knight believe his stronghold of Camelot was built on the site of a recently discovered Roman amphitheatre in Chester.
Legend has it that his Knights would gather before battle at a round table where they would receive instructions from their King.
But rather than it being a piece of furniture, historians believe it would have been a vast wood and stone structure which would have allowed more than 1,000 of his followers to gather.
Historians believe regional noblemen would have sat in the front row of a circular meeting place, with lower ranked subjects on stone benches grouped around the outside.
They claim rather than Camelot being a purpose built castle, it would have been housed in a structure already built and left over by the Romans. 



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