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The Buzz of Something New

(Source: The Economist)   

This year, some predict, will be the year of the microdrone. Small, pilotless aircraft—most of them helicopters with four or more sets of rotors and a payload slung between them—are moving out of the laboratory and into practical use. They are already employed for aerial photography and surveillance, particularly in Europe. In Paris, earlier this month, drones flying around the Eiffel tower caused a security scare. And in America, on March 19th, Amazon, a retailer, was given permission to test a drone designed to deliver its goods.

These drones, though, rely on an operator on the ground. Indeed, this is often a legal requirement. But it is also a constraint. If a world of microdrones really is to come about, then the craft will need to be able to cut the surly bonds of Earth and fly unsupervised. For that, they are going to have to get a lot more intelligent.

The problem is not navigation. The Global Positioning System and Google Earth can tell a drone where it is and what large, permanent obstacles it might encounter, and it can be programmed with its course before it lifts off. The problem, rather, is the unexpected: an unwary bird; an unmapped tree; a gust of wind. Part of making drones able to fly by themselves will be to give them the senses they need to deal with such hazards.

One approach is to ask how natural drones do it. The word, after all, referred originally to a male bee, and bees and other insects rarely blunder into things or fall out of the sky. Copying their tricks makes sense. And laboratories around the world, using bees, blowflies and hawk moths as their models, are trying to do just that.

Continue Reading at Economist.com…

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