Nasa to test drone in commercial airspace

Researchers to study sense-and-avoid technology that warns of planes

[ORLANDO] The Predator drone, known for its stealthy strikes on terrorists, will begin flight tests early next year to prove that large unmanned aircraft are safe while operating amid commercial planes.

Researchers will be studying so-called sense-and-avoid technology, designed to alert the drone's remote pilot to nearby aircraft, according to Chuck Johnson, senior adviser for unmanned and autonomous systems at the National Aeronautics and Space Administration (Nasa).

Nasa's goal: Harvest data that...

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