主动扭转智能旋翼模型试验研究

在国内首次进行采用压电片驱动的碳纤维弯扭耦合梁作为驱动机构的智能旋翼风洞试验。试验结果表明:主动扭转智能旋翼在高转速前吹风状态下,受控状态下的可动桨尖沿扭转输出轴上下偏转可以明显改变桨叶气动力的相应谐波分量,进而影响桨叶的振动,试验为主动扭转智能旋翼用于直升机旋翼振动主动控制奠定硬件基础。

Wind Tunnel Testing of Active Twist Smart Rotor

The active twist blade tip smart rotor is tested in wing tunnel for the first time in china.The active twist blade tip is driven by a PZT-driven bending-torsion coupled actuator beam.The test results indicate that:The deflection of smart rotor blade tip can affect the blade thrust obviously and the effects in blade thrust is enough to control the vibration of rotor under the condition of a high rotation speed with forward flight in wing tunnel.And the internal foundation of theoretical research is established by the test in the strategy of helicopter vibration active control.