带大载荷吊挂直升机悬停纵向操纵性分析

建立带吊挂直升机飞行操纵性分析的理论分析模型。在广义动态入流理论的基础上，基于经典非定常气动栽荷理论，建立了尾迹畸变和尾迹耗散的实时分析模型。为模拟大负载情况下旋翼转速的波动，建立了双发准定常涡轮轴发动机实时仿真模型。吊挂模型为多段柔性吊索模型，包括吊钩模型和吊挂栽荷模型。最后，对比计算和分析了吊挂飞行时的悬停操纵功效。

Lognitudinal Control Characteristic Analysis of Heavy Slung-Load Helicopter

To analyze the handling quality of a helicopter with the heavy slung-load, this paper presents a theoretical analysis model. Based on the generalized dynamic inflow theory and classic non-steady aerodynamic loading theory, a real-time model is obtained by establishing wake distortion and decay. Then a real-time quasi-steady turboshaft twin-engined model is founded by simulating the rotor speed fluctuation. The slung-load model-a multi-segment flexible cable model consists of a hook model and a slung-load model. Finally, the handling efficiency of the helicopter with the heavy slung-load is analyzed.