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

作　　者：张浩 ZHANG Hao(Engine Department,Chinese Flight Test Establishment,Xi’an 710089,China)

机构地区：[1]中国飞行试验研究院发动机所,西安710089

出　　处：《空军工程大学学报》2025年第2期19-25,共7页Journal of Air Force Engineering University

基　　金：航空工业应用创新项目(6250111)。

摘　　要：为拓展动力装置冷却通风试飞结果评价体系,定量评估冷却通风系统的综合性能水平,在试飞过程中发动机舱内温度测量数据存在缺失的情况下,引入综合舱温裕度的概念,开展了适用于不完备试飞数据的冷却通风综合性能评估方法研究。使用K-means聚类算法将舱温数据离散化,结合粗糙集理论的限制容差关系确定舱温指标权重,建立了一种动力舱冷却通风综合性能评估方法,并在3发构型直升机上进行算法应用,评估了冷却通风系统综合性能的影响因素。结果表明,技术状态更改和发动机装机位置对动力舱综合舱温裕度的影响较大,最大差异分别达到65.5℃和83.2℃。综合舱温裕度能够表征冷却通风综合性能,该方法具有通用性,可作为冷却通风试飞传统评估方式的补充。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 evaluation 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 established and the algorithm is applied to a three-engine helicopter.The factors to influence the comprehensive 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 

分 类 号：V228.3[航空宇航科学与技术—飞行器设计]