前行桨叶概念高速直升机操纵冗余问题研究

Research on Control Redundancy of Advancing Blade Concept High-speed Helicopter

前行桨叶概念(ABC)高速直升机采用共轴刚性旋翼、推力复合、操纵复合等先进技术大幅度提升飞行速度的同时也带来了复杂的冗余操纵问题,主要表现在:推力复合带来的旋翼/推力螺旋桨推力控制冗余问题;利用周期变距差动控制共轴刚性旋翼升力偏置问题;共轴刚性旋翼/尾舵面操纵复合带来的俯仰、偏航操纵冗余问题。本文基于共轴刚性推力复合式高速直升机飞行动力学模型,以需用功率最小和满足飞行品质要求为目标,对上述问题开展了分析研究,并提出了解决思路和具体解决方案,可为未来前行桨叶概念高速直升机设计提供参考。

The Advancing Blade Concept(ABC)high-speed helicopter greatly improves the flight speed by using the advanced technologies such as coaxial rigid rotor,auxiliary thrust,and compound control.It also brings complicated redundant control problems.The main manifestations are as follows:auxiliary thrust brings rotor/thrust propeller control redundancy problem;the problem of using differential lateral cyclic to control lateral lift offset value;redundancy problem of pitch and yaw control caused by coaxial rigid rotor/elevator and rudder control composite.In this paper,based on the flight dynamics model of a coaxial rigid rotor high-speed helicopter,the above problems are analyzed and studied in order to minimize the power and meet the requirements of the flight quality,and the solutions are put forward,which can provide a reference for the design of the ABC high-speed helicopter in the future.