The uniform distribution of stresses in flying-wing aircraft improves the aeroelastic flight envelope. In this paper, we document the effect of wing cross-section configuration on the stress distribution and flutter characteristics of a flying-wing aircraft. We determined the flow of stresses through the wing structure, and changed the structure to avoid stress strangulations. The emerging structure is more stable. We used the computer programs Gmsh, Variational Asymptotic Beam Sectional Analysis, and Nonlinear Aeroelastic Trim and Stability of High Altitude Long Endurance Aircraft. The wing structure was evolved by holding fixed the flight condition, mass per unit length, and material type. The results indicate that particular configurations of wing cross sections favor a uniform stress distribution, and therefore aeroelastic stability. The configuration with higher flutter speed is associated with the smoother flow of stresses through the wing structure.

飞翼飞机中应力的均匀分布改善了气动弹性飞行包线。在本文中，我们记录了机翼横截面配置对飞翼飞机的应力分布和颤振特性的影响。我们确定了通过机翼结构的应力流，并改变了结构以避免应力扼杀。新兴结构更加稳定。我们使用了计算机程序 Gmsh、变分渐近梁截面分析以及高空长航时飞机的非线性气动弹性配平和稳定性。机翼结构是通过固定飞行条件、单位长度质量和材料类型而进化的。结果表明机翼横截面的特定配置有利于均匀的应力分布，因此有利于气动弹性稳定性。