The 30-40 in the past in year, china had developed numerous and unmanned aircraft to hold control a system. And as national defence level leap considerably, unmanned aircraft technology of China also obtained rapid development. 2009, without man-machine sharp edge group appears military review first, caused the wide attention of global media. China is exhibited in boat in also exhibited a series of unmanned aircraft, among them " dark sword " invisible and unmanned aircraft is fetching all the more attention. (the graph does not have man-machine model for dark sword)In June 2007, china is high-key showed a new-style and unmanned machine, the name that had an aggressive to it " dark sword " . According to introducing, "Dark sword " the extraordinary on outer form design, the likelihood has capacity of supersonic speed cruise. "Dark sword " the new thinking that reflects China not to have man-machine, high-key reveal show China had mastered excellent unmanned aircraft technology. (the graph does not have man-machine model for dark sword)Expert of magazine of German matters pertaining to defense thinks, the great majority on the world chooses subsonic speed without man-machine, but " dark sword " the ala that take duck mixes two perpendicular the design of inclined ala, show it may have capacity of boat of supersonic speed add, can hold accuse gender and invisible ability is more outstanding also. This print thinks " dark sword " engine is located in lower part of intake duct predecessor, this and annihilate - 10 be exactly the same, conduce to the flexibility that promotes opportunity for combat. Song Zhongping of martial news analyst says, "From its name, just as its name implies, it is to serve as us to did not come in warlike breakthrough process later actually, as " attack a vital point battle " so a main killer mace weapon, it has the construction of a kind of exterior of body of very good a kind of concealed. Additional, from it this whole hang down in light of the design means of end, it is to agree with high speed flies, can use high speed dash forward prevent. Occupy estimation, its fight speed can achieve 3 times sonic above probably, such word makes its this kind dash forward prevent ability to be met can strengthen greatly. But come round to look from eye, "Dark sword " the distance enlists in army to return need possibly for some time truly. "Dark sword " the distance enlists in army to return need possibly for some time truly..