螺旋桨飞机发动机短舱展向位置研究

Research on Spanwise Position of Engine Nacelle for Propeller Aircraft

针对国内某型双发涡桨飞机方案,选取了发动机短舱沿翼展五个展向位置,研究了不同短舱展向位置对气动特性、全机侧翻角、机翼重量的影响。结果表明,升力系数、阻力系数、俯仰力矩系数随机身迎角变化影响很小,滚转力矩系数随侧滑角的变化有一定影响;短舱内移,侧翻角增大,外移侧翻角减小;短舱内移机翼重量增加,外移重量减小。

Five different spanwise positions of the aircraft were studied in the paper. The aerodynamic charateristics, landing gear side turn-over angle and wing weight were calculated and analyzed. The result shows that impact of the lift, drag, pitching moment coefficient with the angle of attack is small. The rolling moment coefficient with the angle of sideslip has certain effect. The side turn-over angle and wing weight are increased as the nacelles are moved inward.