V尾飞机流动特点及静稳定性数值模拟研究  

Numerical investigation on flow features and static stability characteristics of the V-tail aircraft

作　　者：巩文秀 夏明 岳刘明 郑建强 郑遂 GONG Wenxiu;XIA Ming;YUE Liuming;ZHENG Jianqiang;ZHENG Sui(Beijing Aircraft Technology Research Institute,COMAC,Beijing 102211,China)

机构地区：[1]中国商用飞机有限责任公司北京民用飞机技术研究中心,北京102211

出　　处：《飞行力学》2021年第4期19-24,共6页Flight Dynamics

摘　　要：采用数值模拟方法对V形尾翼飞机开展流动特点与静稳定特性研究,并与常规尾翼飞机进行对比。计算结果表明,相对于常规尾翼,V尾的使用可较大幅度降低尾翼浸润面积,并提高后机身的升力贡献。V尾同时具有良好的纵向及横向稳定性,但航向稳定性不足。通过对流场的对比研究,发现V尾飞机的机身干扰导致两侧V尾侧向力及偏航力矩方向相反且相互抵消,会引起航向稳定性的损失。进一步分析表明,通过增加V尾上反角可有效提升V尾侧向力及偏航力矩,改善航向稳定性。The flow features and static stability characteristics of the V-tail aircraft were studied by numerical simulation and compared with conventional tail aircraft. The V-tail can reduce the tail wetting area and increase the fuselage lift contribution significantly, according to the results. It also performed an acceptable longitudinal and lateral stability, but the direction stability was insufficient. The interference between V-tails and fuselage causes the lateral force and yaw moment of V-tails opposite in direction and offset mutually. This is the major factor for the loss of directional stability based on flow field analysis. Further analysis shows that the lateral force and yaw moment can be effectively promoted and the direction stability can be improved by increasing the dihedral angle of the V-tail.

关 键 词：流动特点 静稳定性 数值模拟 

分 类 号：V212.121[航空宇航科学与技术—航空宇航推进理论与工程]