不同后掠形式栅格翼气动特性的研究

摘要

Grid fins is a new kind of wing more advantageous than traditional wing , but the drag of grid fins is its main drawback .Early re-search has shown that the swept grid fins can reduce resistance effectively .In this paper , numerical simulation , was studied based on dif-ferent swept form of grid fins .The numerical results show that at supersonic speed stage , the model of forward-swept sharping can effective-ly decrease the resistance .As to the lift, in different Mach range , forward-swept, forward-swept sharping and the whole-swept have good lift characteristics;In general, the forward-swept sharping has the largest lift-to-drag ratio, showing the best aerodynamic characteristics .%栅格翼是一种较之传统翼具有诸多优点的新型的多面翼，但是栅格翼的主要缺点是阻力大。前期研究表明，栅格翼后掠能有效减小阻力。文中基于此对不同后掠形式的栅格翼进行了数值模拟。结果表明，在超声速阶段前缘后掠削尖模型能更有效的减小阻力；升力方面，在不同的马赫数范围，前缘后掠、前缘后掠削尖及整体后掠基础上的前缘后掠都有较好的升力特性；总体来讲，在文中前缘后掠削尖模型的升阻比最大，表现出最好的气动特性。