电子设备吊舱瞬态热载荷分析与计算

瞬态热载荷的分析与计算是合理设计电子设备吊舱环境控制系统的基础.本文建立了吊舱动态热平衡方程与壁面导热方程,并使用有限差分方程求解吊舱瞬态热载荷.分析了飞行状态及吊舱热容量对吊舱瞬态温度的影响,提出了"蓄冷"节能的设计概念并据此合理地确定了吊舱环境控制系统的设计热载荷.

Calculation of Transient Heating Load for Avionics Pod

The calculation of transient heating load is fundamental to the design of the environmental control system (ECS) for avionics pods. In this paper the dynamic heat balance equation for the avionics pod and the heat transfer equation for the pod wall have been established. The transient heating load of the pod have been computed by means of finite difference equations. The influences of the flight condition and the thermal inertia of the pod on the transient temperature in the pod have been analysed. Finally the paper has adopted the design concept of cool storage for saving energy and rationally defined the design heating load of the ECS for the avionics pod.