直升机吊挂及吊挂物抛放过程建模与分析

建立带吊挂载荷的直升机飞行动力学模型。为计算从悬停转入前飞过程中的过渡飞行段尾迹的畸变和气动干扰特性，旋翼尾迹模型采用非定常有限状态入流理论并添加了尾迹畸变模型；建立了六自由度吊挂体模型，包括多段柔性钢索模型、箱体运动模型以及简化的圆柱形箱体气动力模型等；箱体内弹药发射和抛放过程计入了后座力模型对箱体的反作用。模型程序能模拟弹丸瞬间抛放／发射的过程对直升机操稳特性的影响，并实时记录弹体、箱体和直升机的各项运动参数。

Modeling and Analyzing of Rotorcraft with a Partially Releasable Slung-Load

A helicopter mathematical model with a slung load is described. Firstly, the generalized dynamics wake (GDW) theory with a distortion model is selected to get the transient flight dynamics effects like off-axis response and aerodynamics interference. A six-freedom slung-load model with multi-segments soft tightwir mathematical model is applied, and the sling box is modeled as a cylinder with simple aerodynamics shape, a recoil force model from the experiment is also appended to the slung load. The process of ammos launch from this slung box can be simulated, and movement parameters of the ammos, box, tightwire and helicopter are all recorded at the same time.