美中不足1965年6月4日强5首飞成功,当年年底初步设计定型。随后四年时间里,强5原型机先后完成各种试飞项目,并针对暴露出的大量问题进行了设计改进。1969年12月,在先后完成两架样机的试飞后,杨国祥等试飞员对强5的起降性能、中高空操纵稳定性、低空最大平飞速度和稳定性等都给予了积极的评价,认为强5可以达到低空、超低空突然 The fly in the ointment on June 4, 1965 strong 5 first flight success, the end of the year preliminary design and finalization. In the following four years, the Q5 prototype completed a series of test flight projects and designed and improved a number of exposed issues. In December 1969, after successfully completing the test flight of the two prototypes, Yang Guoxiang and other test pilots gave positive comments on the take-off and landing performance of the strong 5, the stability of mid-altitude operations, the maximum speed and stability at low altitude, and concluded that Strong 5 can reach low altitude, low altitude suddenly