波音公司研制的 A160T“蜂鸟”无人直升机原型机于2007年6月15日成功首飞,但在12月10日的第10次试飞中因为飞行控制系统通信中断而坠毁,目前第二架原型机在安装了防飞行控制系统故障的新安全装置后,在今年3月26日恢复飞行,并在5月中创造了同重量级无人机续航时间的新纪录。 The A160T Hummingbird unmanned helicopter prototype developed by the Boeing Company successfully made its first flight on June 15, 2007, but crashed on the 10th test flight on December 10 due to the interruption of communication control of the flight control system. At present, the second The prototype aircraft resumed its flight on March 26 this year after installing a new safety device that prevented the flight control system from failing and set a new record for the duration of the same heavy-weight UAS in mid-May.