空军工程大学学报2025，Vol.26Issue(2)：19-25,7.DOI:10.3969/j.issn.2097-1915.2025.02.003
基于限制容差关系的动力舱冷却通风综合评估
A Comprehensive Evaluation of Engine Nacelle Cooling and Ventilation Based on Limited Tolerance Relation
摘要
Abstract
In order to expand the evaluation system of the power plant's cooling and ventilation flight test,and quantitatively assess the comprehensive performance level of the cooling and ventilation system under conditions of missing temperature measurement data in the engine nacelle during flight tests,the concept of integrated nacelle temperature margin is introduced,and research on a comprehensive performance eval-uation method for cooling and ventilation suitable for incomplete flight test data is made.The K-means clustering algorithm is utilized for making the discretization of nacelle temperature data,and determining the weight of nacelle temperature indicators in combination with the limited tolerance relation of rough set theory.A comprehensive performance evaluation method for cooling and ventilation of engine nacelle is es-tablished and the algorithm is applied to a three-engine helicopter.The factors to influence the comprehen-sive performance of the cooling and ventilation system are evaluated.The results show that the changes of technical state and the engine position have great influence on the integrated nacelle temperature margin,and the maximum difference reaches 65.5℃ and 83.2℃.The integrated nacelle temperature margin can characterize the comprehensive performance of cooling and ventilation.And this method is universal,and can be used as a supplement to the traditional evaluation method of cooling and ventilation flight tests.关键词
限制容差关系/冷却通风试飞/数据缺失/综合舱温裕度/K-means聚类/粗糙集理论Key words
cooling ventilation flight test/data missing/integrated nacelle temperature margin/K-means clustering/rough set theory/limited tolerance relation引用本文复制引用
张浩..基于限制容差关系的动力舱冷却通风综合评估[J].空军工程大学学报,2025,26(2):19-25,7.基金项目
航空工业应用创新项目(6250111) （6250111）
