常规准则对加油机飞行品质评定的适用性

为了开展空中加油任务中加油机飞行品质的评定准则研究,对多组不同参数控制律的加油机进行了地面飞行品质评定模拟试验,研究了常规准则在加油机飞行品质评定中的适用性。结果表明:常规飞行品质准则边界不完全适用于评定加油机飞行品质;ζ_(sp)与CAP准则和ζ_(sp)与ω_(sp)T_(θ2)准则与空中加油任务中加油机的飞行品质要求相关性较差,单位迎角变化所引起的纵向过载与短周期自然频率组合能够在一定程度上反映该任务中加油机的飞行品质要求,带宽准则能够反映出空中加油任务对加油机俯仰姿态响应带宽的要求,但该任务对等效延迟时间的要求相比于带宽准则要低。

Applicability of conventional criteria in evaluatingflying qualities of the tanker

In order to study the flying qualities of tanker in aerial refueling mission, this paper studied the applicability of conventional flying qualities criteria in evaluating the flying qualities of tanker by means of testing various aircraft with different control law parameters on a fixed-base simulator.The results show that the boundary of conventional flying qualities criteria is not applicable to assess tanker's flying qualities.The correlation of tanker's flying qualities requirements and the criteria of ζsp vs.CAP and ζsp vs.ωspTθ2 is poor, but the parameters of steady-state normal acceleration change per unit change in AOA and the natural frequency of the short-period oscillationcan reflect the requirement of tanker's flying qualities to some extent.The study of bandwidth criteria shows that the limit of bandwidth can be applied to evaluate tanker's flying qualities, but the limit of time delay is too strict.