翼身融合布局起飞状态动力效应影响研究

The influence of engine powered effects on aerodynamic characteristics of BWB300, which was designed by the Airplane Concept Design Institute of Northwestern Polytechnical University, at take-off condition was analyzed by using the numerical simulation method. Firstly, the method of using the inlet and exhaust boundary conditions to analyze the powered engine was validated. Then, the engine powered effects on BWB300 aerodynamic characteristics at take-off condition were researched with flow through nacelle and with powered nacelle. The results indicated that though the powered effect changing the value of aerodynamic forces, there was no change in the aerodynamic curve trend. It's recommended that the engine power effect should be considered in numerical simulation by using with powered nacelle to gain more accurate values of aerodynamic forces. Nevertheless, with flow nacelle also could be used to gain some regular results.