uilt by Lockheed Martin and Boeing, the stealth tactical aircraft has been around since 2005, being fielded exclusively by the United States Air Force (USAF). And it’s a monster of a winged machine. Being flown by a single pilot, the airplane can reach a maximum speed of Mach 2.25, and can fly at heights of up to 65,000 feet (20,000 meters). Its range is of about 1,800 miles (3,000 km). (www.autoevolution.com) 更多...
