直升机动升限飞行动力装置冷却通风系统特性分析

Characteristic Analysis of Powerplant Cooling System of Helicopter in Dynamic Ceiling Flight

动升限爬升是直升机动力装置冷却通风系统试飞的一项重要考核内容。测量了涡轴发动机在动升限飞行中的壁面温度和环境温度,通过对比、分析各测点温度值的时间变化历程曲线,从而获得了直升机动升限飞行动力装置冷却通风系统的一般特性,该特性可为后续试飞提供借鉴。

The dynamic ceiling climbing is an important content of the flight test of helicopter powerplant cooling system. In this paper, the wall temperature and environment temperature of a turboshaft engine in the dynamic ceiling flight was measured, through the contrast and analysis of the curve of each temperature changes with time, the general characteristics of powerplant cooling system of helicopter in dynamic ceiling flight was obtained. This characteristics can provide references for future flight test.