风挡防冰热性能分析工程模型的建立和验证

Establishment and Verification of Engineering Model for Windshield Anti-ice Thermal Analysis

为表明飞行条件和结冰条件所有组合下防冰能力是足够的,分析了风挡的设计需求和流场特性,建立了理论上保守的工程模型,确定了模型的关键系数;通过飞行试验数据修正了关键系数并验证了模型;该模型能够便捷地使用常用的编程语言甚至EXCEL内置函数实现对所有组合状态的性能分析,其结果能够支持适航取证及CFD计算状态筛选。

To indicate the capability of windshield anti-ice is adequate under all combinational cases of flight en-velope and icing condition. ,the design requirement and flow field characteristics of windshield is analyzed ,a theo-retical conservative engineering model of windshield anti-ice thermal analysis was established. Key coefficient of the model was corrected and verified by flight test data. The model can be implemented by general programming language or EXECL internal function to deal with thermal analysis under all combinational cases. The results could support airworthiness certification or filter CFD cases.