China's mysterious " Dark Sword " combat drone could become the world's first supersonic unmanned aviation vehicle , reports the website of the country's national broadcaster CCTV. The Dark Sword — known in Chinese as "Anjian" — made quite a stir in 2006 when a conceptual model of the unusually shaped triangular aircraft made its debut at the Zhuhai Airshow in southern China's Guangdong province. The model was subsequently exhibited at the Paris Air Show but has disappeared from future airshows, with no official word on the development of the UAV . Some claim the project has already been scrapped due to insufficient funding or other reasons, while others believe the development of the drone is now being kept secret as it is undergoing further research and testing. China's Dark Sword Drone Chinese aviation expert Fu Qianshao told CCTV that while he does not know the status of the Dark Sword project, the drone could...