民用飞机电传PIO杆力特性设计建议

在民用客机的飞行过程中,驾驶员通过驾驶杆对飞机实施操纵,并希望飞机按照所期望的方式飞行。杆力特性设计的目的是通过设计驾驶员操纵力与控制律指令信号的相互关系,使增稳飞机操纵特性满足有关飞行品质规范的要求,这对于预测和抑制PIO具有重要意义。本文总结了杆力特性对PIO的影响规律,通过采用过载指令构型,设计4组不同的杆力梯度进行对比分析。结果表明,在设计民用电传飞机的杆力梯度时,建议严格按照俯仰机动力梯度等级中的的1级杆力梯度要求选取,驾驶员就能够较为轻松、准确地完成俯仰截获任务。

Design Suggestion of PIO Stick Force Characteristic of Civil FBW Aircraft

In the flight of a civil aircraft,the pilot controls the aircraft with stick,and hopes it to fly in the expected way.The purpose of stick force characteristics design is to design the relationship between the pilot and control law command,so that the characteristics of stabilized aircraft can meet the flight quality requirements.This is of great significance for predicting and suppressing PIO.The influence of stick force on PIO is summarized,f our different stick force gradients are designed and analyzed by using overload instruction configuration.The design suggestion of PIO stick force for civil FBW aircraft is put forward.The results show that when designing the stick force gradient of civil FBW aircraft,it is suggested to select the stick force gradient of level 1,so that the pilot can complete the pitch interception task easily and accurately.