关键词: 飞机-吊舱, 环境控制, 系统, 最优设计

Abstract: The latest developments of the technology of the environmental control system (ECS) for avionics pods were presented. A new ECS scheme was raised which operated on a reverse bootstrap air cycle with a regenerative heat exchanger. The design difficulties of the pod ECS were analyzed and the keys to the design of the low Reynolds number flow turbine-compressor unit and high total pressure recovery air-inlet were described. The method for pod ECS optimization was also approached, which included establishment of mathematical model,determination of objective function and constraints, and selection of optimization technique. Four types of ECS presently used in military aircraft pods were considered. The sine method combined with simplex method was applied to seek optimal technologic scheme and parameters for these systems. Finally the contrasts and analyses of the results of the system scheme and parameter optimization were made. The results showed that the new pod ECS had less fuel penalty and higher Coefficient of Performance (COP).

Key words: aircraft-pod, environmental cont ro l, system, op t imum design