大型运输机,包括民航机,到目前为止始终未能摆脱多年沿用的模式,即粗壮的机身、大展弦比机翼加水平尾翼。波音B-787、“空中客车”A-380和欧洲最新军用运输机A-400M无一例外。曾经有过很多飞翼式方案,但始终不理想,原因是机内容积不够大,操纵性也有问题。多年来美国空军一直期望打破这种传统模式,后委托波音 Large transport aircraft, including civil aircraft, have so far failed to escape the pattern that has been in force for years, namely the sturdy fuselage, the large aspect ratio wing and the horizontal tailplane. Boeing B-787, Airbus A-380 and the latest European military transport aircraft A-400M without exception. There have been many flying-wing programs, but they are always unsatisfactory because the internal volume of the machine is not big enough and handling is also problematic. For years, the U.S. Air Force has been hoping to break this traditional pattern by commissioning Boeing