四轮高压除水环控系统优化数学模型

Optimized Mathematical Model of Four-wheel Environmental Control System with High Pressure Water Separation

国外商用飞机基本上采用三轮高压除水环控系统 .在B 777的环控系统中已开始采用四轮高压除水 ,介绍了此系统建立其优化数学模型 ,选用合理的设计变量 ,以飞机起飞燃油重量代偿损失作为优化设计的目标函数 ,确定约束条件 ,用混合罚函数法求解上述数学模型 .

Four wheel ECS (environmental control system) with the high pressure water separation has been used in B 777, which is the latest advancement in ECS. In this paper, the optimized mathematical model of four wheel system is discussed, with the rational designing variables used. The compensating loss of fuel weight for aircraft take off is taken as the objective function. Restrictive conditions are determined and mixed penalty function method is selected to solve the problems in the mathematical model. The results of calculation can be used as theoretical basis for the further design and research in four wheel ECS.