Assessment on critical technologies for conceptual design of blended-wing-body civil aircraft

作     者：Zhenli CHEN Minghui ZHANG Yingchun CHEN Weimin SANG Zhaoguang TAN Dong LI Binqian ZHANG 

作者机构：School of AeronauticsNorthwestern Polytechnical UniversityXi’an 710072China Shanghai Aircraft Design and Research InstituteCommercial Aircraft Corporation of China LtdShanghai 201210China 

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

年 卷 期：2019年第32卷第8期

页      面：1797-1827,1794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：supported by the Fundamental Research Funds for the Central Universities (Nos. 3102019JC009 and G2016KY0002) 

主　　题：Aerodynamic design Bended-wing-body Propulsion Airframe Integration Stability and control Structure 

摘      要：Civil aviation faces great challenges because of its robust projected future growth and potential adverse environmental effects. The classical Tube-And-Wing(TAW) configuration following the Cayley’s design principles has been optimized to the architecture’s limit, which can hardly satisfy the further requirements on green aviation. By past decades’ investigations the BlendedWing-Body(BWB) concept has emerged as a potential solution, which can simultaneously fulfill metrics of noise, emission and fuel burn. The purpose of the present work is to analyze the developments of critical technologies for BWB conceptual design from a historical perspective of technology progress. It was found that the high aerodynamic efficiency of BWB aircraft can be well scaled by the mean aerodynamic chord and wetted aspect ratio, and should be realized with the trade-offs among stability and control and low-speed performance. The structure concepts of non-cylinder pressurized cabin are of high risks on weight prediction and weight penalty. A static stability criterion is recommended and further clear and adequate criteria are required by the evaluations of flying and handling qualities. The difficulties of propulsion and airframe integration are analyzed. The energy to revenue work ratios of well-developed BWB configurations are compared,which are 31.5% and 40% better than that of TAW, using state-of-art engine technology and future engine technology, respectively. Finally, further study aspects are advocated.