在第四代超音速战斗机中具有真正有效的超音速巡航能力的只有美国的F—22飞机。飞机具有超音速巡航能力,是要求其发动机不开加力,能在M1.5以上做超过30分钟的超音速飞行。现有的战斗机,只有打开加力时,才能做超音速飞行,而且耗油量会猛增1～2倍。超音速飞行时间只有几分钟,机动性也差。具有超音速巡航能力的飞机,可克服以上不足,能大大提高其作战效能;可以更快的速度飞抵战区执行任务;可以高速脱离战区摆脱敌机攻击;可以外推拦截线,使敌方轰 In the fourth-generation supersonic fighter jets have really effective supersonic cruise ability of the United States only F-22 aircraft. The aircraft has a supersonic cruise capability, is to require its engine does not open the force, can do more than 30 minutes supersonic flight M1.5. The existing fighter aircraft, only when you open the force, you can do supersonic flight, and fuel consumption will surge 1 to 2 times. Sonic flight time is only a few minutes, poor mobility. A supersonic cruise capable aircraft can overcome the above deficiencies, can greatly improve its combat effectiveness; can be faster fleet arrived combat zone mission; high-speed out of theater to get rid of hostile aircraft attacks; can be extrapolated to intercept lines, so that the enemy Bang