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俄罗斯空气动力研究所中心学报

ISSN 打印: 1948-2590
ISSN 在线: 1948-2604

俄罗斯空气动力研究所中心学报

DOI: 10.1615/TsAGISciJ.2018029594
pages 809-823

ABOUT METHODS OF DETEMINING BUFFET ONSET BOUNDARY FOR A PASSENGER AIRCRAFT WING

Nikolay Nikolaevich Bragin
Central Aerohydrodynamic Institute (TsAGI)

ABSTRACT

An iterative engineering algorithm for determining the buffet onset boundary on a preliminary stage of aircraft design is proposed. The function CL buf(M) is obtained by two methods, namely, the analysis of the CL(α) curve and the analysis of topology of streamlines on the upper wing surface. Aeroelastic deformations are taken into account in the computations. The minimum computer resources to complete the entire analysis for estimating total configuration is the main advantage of the used program. A comparison of the computational results with the experimental data obtained in a wind tunnel is accomplished.


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