Analysis of Parameters Sensitivity for Airliner Conceptual Design Using Surrogate Model
ZHANG Chenlizi
SONG Xiaoyu
ZHU Wensheng
YU Xiongqing
Abstract：In order to reduce the computational burden of parameters sensitivity analysis in airliner concep-tual design and realize the true?time indication of analysis results,a surrogate?model method for compre-hensive analysis of airliner performance is investigated.Firstly,determine design variables and obj ective parameters as well as select suitable multi?dimensional design space.Secondly,the sample points in design space are selected with Opt LHD (Optimal Latin hypercube design)method,and are analyzed by an airlin-er conceptual multidisciplinary analysis code to obtain a series of required obj ective parameters.A second?order polynomial response surface is used to construct the surrogate?model to replace the multidisciplinary analysis code.Finally,various kinds of diagrams are generated using this surrogate?model to reflect influ-ence of conceptual parameters toward obj ective parameters.An example of parameters sensitivity analysis for a certain airliner conceptual design is used to verify the method.The results show that the surrogate?model accuracy is very satisfied when sample points are around 1 5 times number of design parameters,and the impacts of major design parameters on airliner performance can be depicted simultaneously with tend-ency chart,surface chart,and Pareto chart.
Keywords：airlinerconceptual designsensitivity analysissurrogate?model
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 18-22 )