联翼布局多控制面纵向配平特性研究

采用多控制面配平是联翼布局临近空间长航时无人机提高升阻比、延长航时、降低起飞重量的重要措施。针对某联翼布局的临近空间长航时无人机,利用CFD计算和工程估算相结合的方式,研究了其多控制面纵向配平时的气动特性和对起飞重量的影响。结果表明,采用多控制面设计并选择合适的配平模式,可以保证在良好的配平姿态和配平纵向静稳定性下,有效提高配平升阻比,降低起飞重量。

Research on lognitudinal trimmed characteristics of joined-wing by multi-control-surfaces

Trimmed by multi-control-surfaces is one important method for the joined-wing near-space-long-endurance UAV to improve the L/D,extend loiter time and decrease take-off weight.Based on one joined-wing near-space-long-endurance UAV,the lognitudinal trimmed characteristics were researched by the CFD integrated with the project evaluation method.The results show that using the multi-control-surfaces design and choosing appropriate trimmed modes can improve the UAV's trimmed L/D and decrease the UAV's take-off w...