翼身融合布局大型客机的重心分析

在翼身融合布局飞机的总体设计阶段,为评估飞机总体方案的重心范围,建立了重心分析模型.分析模型以翼身融合布局飞机的几何参数为基础,应用参数化方法快速完成客舱布置,以工程估算和代理模型两种方法完成飞机的重量估算并计算重心前后限,绘制重心云图.基于重心分析模型,在Matlab平台开发了重心分析程序.以555座级翼身融合布局飞机的总体方案为例子来验证本文开发的程序.结果表明本程序可快速实现BWB飞机的客舱布置和重心云图绘制,分析结果可为飞机的稳定性和操纵性评估提供重心数据.

An alysis on Centre of Gravity of Bended -wing-b ody Aircraft

An analysis model is developed to evaluate the range of the center of gravity ( c.g .) for con-ceptual design of blended wing body ( BWB) aircraft.Based on geometric parameters of the BWB air-craft,a parameterized design method is used to rapidly generate the cabin layout .A semi-empirical meth-od and a surrogate model are adopted to predict the weight items of the BWB aircraft .With the cabin lay-out and weight results ,a c.g.diagram is generated .According to the proposed method,a Matlab code is developed to predict the c .g.diagram.A conceptual design of BWB aircraft with 555 passengers is used as an example to verify the code .The results indicate that the cabin layout and c .g.diagram of the BWB aircraft can be rapidly generated by the code ,which can be used for the evaluation of stability and control of the BWB aircraft.