空气动力学学报2024，Vol.42Issue(11)：63-74,12.DOI:10.7638/kqdlxxb-2023.0222
飞行器表面测压试验设计及分区重构方法
Experimental design and regional reconstruction method for wind tunnel pressure measurements on flight vehicles
魏巍 1薛亦菲 2林键 1程思野 2张江 1陈星1
作者信息
- 1. 中国航天空气动力技术研究院,北京 100074
- 2. 中国航空研究院,北京 100029
- 折叠
摘要
Abstract
This paper introduces an a priori-embedded framework for the design of experiments and regional reconstruction in wind tunnel pressure testing for flight vehicles.We propose an experimental design methodology that integrates prior information,enabling a quantitative translation of prior knowledge to pressure design sites.This approach encompasses the extraction of features from prior pressure distributions,a clustering process for multiple scenarios,and an optimization strategy for the uniformity of triangular facets in the initial design.To capture variations in local pressure distributions,we introduce a proper orthogonal decomposition(POD)-based reconstruction technique that aligns the number of base modal shapes with the number of design sites.Evaluations on a typical high-speed aircraft demonstrate a mean reconstruction error of less than 0.2%,a root mean square error below 4%,and a maximum error not exceeding 30%.The consistent reconstruction performance across various cases is significant for the accurate determination of the lift curve slope.The incorporation of a priori-embedded design further refines the maximum error reduction by 0～10%.The framework requires only numerical outcomes and minimal empirical parameters,rendering it well-suited for complex configuration flight vehicles in pressure measurement testing.关键词
试验设计/数据重构/测压/风洞试验/融合先验信息Key words
design of experiment/data reconstruction/pressure measurement/wind tunnel test/priori information embedded分类
航空航天引用本文复制引用
魏巍,薛亦菲,林键,程思野,张江,陈星..飞行器表面测压试验设计及分区重构方法[J].空气动力学学报,2024,42(11):63-74,12.
