修正人-机耦合的直升机轴间耦合试飞技术

Modified Helicopter Man-machine Inter-axis Coupling Flight Test Technology

轴间耦合指标是直升机飞行品质的重要指标。本文结合某型直升机的飞行试验,对直升机人-机耦合条件下的轴间耦合的特性进行了分析。通过模型辨识及数值分析,提出了一种基于模型的轴间耦合试飞方法。通过飞行试验证明该方法可有效获得人-机“开环”条件下的轴间耦合定量指标,对直升机轴间耦合的指标考核和品质试飞具有一定的指导意义。

Inter-axis coupling index is an important indicator for helicopter flight quality.Combined with the result of the helicopter flight test,this paper presented a research of the helicopter and studied the helicopter inter-axis coupling under the condition of man-machine.Through model identification and numerical analysis,an inter-axis coupling model-based flight test method was proposed.Flight tests show that this method can effectively obtain the quantitative indexes of inter-axis coupling under the condition of man-machine"open-loop".It provides a guidance for the helicopter inter-axis coupling and flight quality test.