在第四代战斗机的发展中,经济性是一个很重要的制约因素。F-22的单价近1亿美元,无论哪个国家都难以大量装备。而现代战争的一个特点就是高强度、高消耗,装备数量的需求和经费的矛盾必然突出,因而美国又推出了JSF计划。这项计划的一个重要目标就是要研制一种经济上能承受的战斗机。从某种意义上来讲,它是一种与F-22形成“高低搭配”的新一代“低档飞机”。目 In the development of the fourth generation fighter aircraft, economy is a very important constraint. F-22’s unit price of nearly 100 million US dollars, no matter which country is difficult to large-scale equipment. One of the characteristics of the modern war is that the conflict between the demand and funding of high-intensity, high-consumption and equipment-based services is bound to be prominent. As a result, the United States has launched the JSF program. An important goal of this plan is to develop an economically affordable fighter aircraft. In a way, it is a new generation of “low-end aircraft” that is “high-low-level” with the F-22. Head