入流特性对直升机飞行数值仿真的影响

针对常规单旋翼带尾桨直升机，讨论不同特性的入流模型在直升机数值仿真中的作用。以Ｐｉｔｔ／Ｐｅｔｅｒｓ的动力入流模型为基础，重点分析均匀与非均匀静态入流和动力入流模型对直升机配平以及驾驶员操纵输入动态响应数值精度的影响程度，可为不同目的飞行数值仿真中入流模型的选取提供参考。

Inflow Characteristics in Flight Digital Simulation of Helicopter

For the classical helicopter of single main rotor with tail rotor, the effect of inflow models with different characteristics on helicopter trim and digital simulation were discussed in this paper. Based on Pitt/Peters' one order dynamics nonuniform inflow model, the effect on helicopter trim of uniform and nonuniform static inflow models of main rotor, and the effect on helicopter dynamics response to pilot control input of uniform dynamics inflow model of tail rotor, uniform and nonuniform dynamics inflow models of main rotor, were analyzed, which could provide useful reference to chose inflow model of main rotor and tail rotor for different flight digital simulation.