Want China Times... The images show an extremely short aircraft with two wings in contrast to other unmanned aerial vehicles that China has developed. The aircraft looks more similar to the X-15 hypersonic rocket-powered aircraft developed by North American Aviation for the United States Air Force and NASA back in 1959 than Lockheed Martin's SR-72, designed to replace the SR-71 Blackbird, currently the world's fastest jet. Zhang Wenchang, senior engineer at the Armament Research Institute of the People's Liberation Army Air Force, told Beijing's China Aviation News that China has successfully test-flown an aircraft with similar capability to the SR-71, though he said it is too early to say whether the country can successfully complete the development of such an aircraft. Want China Times