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针对变前掠翼(VFSW)无尾布局的横航向操纵,设计了开裂式方向舵(SR)操纵面,采用Navier-Stokes控制方程的有限体积离散方法以及剪切应力输运(SST)湍流模型,计算了变前掠翼中平直翼和典型的前掠翼布局开裂式方向舵的操纵性能,并对其操纵效率进行了比较,分析了其流场形态。计算结果表明:右侧开裂式方向舵打开后,平直翼时迎角对偏航力矩的影响较小,而舵偏量对偏航影响显著,利于偏航;前掠翼的偏航力矩随迎角的增加有所波动,但在小迎角时较为稳定,偏航作用随舵偏量增加而增强;右侧滑对滚转作用强于左侧滑,偏航作用低于左侧滑。经比较,平直翼的偏航作用明显强于前掠翼,平直翼和前掠翼的滚转和偏航作用均具有耦合性,但平直翼的耦合效应弱于前掠翼。
Aiming at the transverse steering of VFSW with no tail layout, the cracked rudder (SR) control surface was designed. The finite volume discretization method of Navier-Stokes control equation and the turbulent model of shear stress transport (SST) The maneuverability of the flattened wing in the variable front swept wing and the cracked rudder with the typical forward swept wing is calculated. The control efficiency is compared and the flow field shape is analyzed. The calculation results show that when the right-hand cracking rudder opens, the impact angle of the straight wing has little influence on the yaw moment, while the influence of the steering offset on the yaw is significant, which is good for yawing. However, it is stable at small angles of attack, and the yaw effect is enhanced with the increase of the steering offset. The right-hand slippery roll is stronger than the left-hand slippery roll, and the yawing effect is lower than that of the left-hand slippery wheel. By comparison, the yawing effect of the straight wing is obviously stronger than that of the forward swept wing. The coupling between the straight wing and the forward swept wing is both the roll and the yaw, but the coupling effect of the straight wing is weaker than that of the front swept wing.