Downwash modelling for three-lifting-surface aircraft configuration design

作     者：Salvatore CORCIONE Giordana BONAVOLONTàAgostino DE MARCO Fabrizio NICOLOSI Salvatore CORCIONE;Giordana BONAVOLONTà;Agostino DE MARCO;Fabrizio NICOLOSI

作者机构：Department of Industrial EngineeringUniversity of Naples“FedericoⅡ”Naples 8125Italy School of Aerospace Transport&ManufacturingCranfield UniversityBedford MK43 OALUnited Kingdom 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2023年第36卷第6期

页      面：161-173页

核心收录：

学科分类：08[工学] 082501[工学-飞行器设计] 0825[工学-航空宇航科学与技术] 

基　　金：funded for the development of an innovative high-capacity regional turboprop platform by the IRON project received funding from the Clean Sky 2 Joint Undertaking under the European Union's Horimpzon 2020 research and innovation program under Grant Agreement No.699715 part of Clean Sky 2 REG-GAM 2018 project implemented on the H2020 program under GA 807089 

主　　题：Aerodynamic modelling Aircraft design Design of experiments Downwash Three-lifting-surface 

摘      要：This paper introduces a semi-empirical model to predict the downwash gradient at the horizontal tail of a three-lifting-surface *** superposition principle applied to well established formulations valid for two lifting surfaces is not a reasonable approach to calculate the downwash of a canard-wing-tail layout,and this paper demonstrates that such a basic technique leads to incorrect ***,an ad hoc prediction model is proposed that considers the combined nonlinear effects of canard and main wing inductions on tail downwash,being based on a full factorial design sweep of CFD simulations obtained by varying the main geometrical parameters of the three lifting surfaces.A suitable analytical formula for the downwash gradient is established through a process of data analysis and factor *** presented model extends the validity of the available models for traditional two-lifting-surface designs by means of a correction *** engineering estimation method introduced here exhibits an acceptable accuracy,as well as relatively small prediction errors,and it is suitable for conceptual and preliminary studies of threesurface *** value of this methodology is confirmed by the validation with the results of numerical and experimental investigations on a case study aircraft.