F-22的首飞试验原计划在今年6月初进行,后因油箱泄漏、驾驶舱告警灯质量不过关、刹车软件失灵等种种问题,使原计划推迟了3个月之久。首飞试验于今年9月7日,才在加州马里塔的多宾斯空军备用基地成功地进行。首飞试验达到了所有的预定目标。 按F-22的初步飞行试验计划,首飞后,该机应在一周内进行第二次和第三次飞行试验,才算圆满完成初步飞行试验阶段的工作。但当它于9月14日进行第二次试飞时,因在自检测试验中发现右起落架液压阀出现故障,致使试验部门作出了暂停继续进行第三次飞行试验的决定。何时恢 The first flight test of the F-22 was originally scheduled to be conducted in early June this year. After the tank leaked, the cockpit warning lights failed to pass the test and the brake software failed, the original plan was postponed for 3 months. The first flight test was successfully conducted on September 7 this year at the Dobbins Airstrip Reserve in Marita, California. The first flight test met all the intended goals. According to the preliminary flight test plan of F-22, after the first flight, the aircraft should conduct the second and third flight tests in a week, so as to successfully complete the preliminary flight test phase. However, when it carried out a second test flight on September 14, the failure of the right landing gear hydraulic valve during the self-test resulted in the trial department’s decision to suspend the third flight test. When to resume