冷战期间,美苏两大阵营在武器研发方面一直比拼较劲。20世纪60年代中期,美国空军开始研发F-15重型战斗机,因此,超越F-15就成了苏-27的硬指标。迟到的“经典”苏-27的原型机于1981年首飞,随后于1982年开始量产。虽然比F-15的服役时间晚了七八年,但事实证明,这个迟到的“经典”并未令人失望。苏-27战斗机长21.49米,翼展14.70米, During the Cold War, the two camps, the United States and the Soviet Union, have been competing vigorously in weapons development. In the mid-1960s, the U.S. Air Force began research and development of the F-15 heavy fighter jets. As a result, surpassing the F-15 became a hard indicator of Su-27. The late “classic” Su-27 prototype first flew in 1981, followed by volume production in 1982. Although it was seven or eight years behind the F-15’s service, it turned out that the late Classic was not disappointing. Su-27 fighters 21.49 meters long wingspan 14.70 meters,