http://english.chosun.com/site/data/html_dir/2011/05/09/2011050900754.htmlChina has successfully tested a medium-sized unmanned helicopter with a maximum takeoff weight of 757 kg.
Weifang Tianxiang Aerospace Industry conducted a flight test of the helicopter, model number V750, at a facility in Weifang City in Shandong Province on Saturday, the official Xinhua news agency reported Sunday.
The drone landed safely after completing various maneuvers at 25 m altitude for about 10 minutes, Xinhua added. The V750 made its first public appearance at an international airshow in Zhuhai last November, but this was the first official flight test.