飞机在飞行中,由于气动力作用,机翼要承受外载荷而在桃翼结构内产生剪力,弯矩和扭矩,迫使机翼在垂直和平行于机翼平面内弯曲,并绕自己的轴线扭转,而产生相应的变形。机翼受力构件的任多,就是要能承受这些内力的作用而不致产生过度的变形。也就是说机翼的受力构件要能够在有足够的强度和刚度的务件下,把外载荷胜利的传递到机身(支持结构)上去。机翼构造中参加这项任努的构件称主要受力构件;把局 Aircraft in flight, due to aerodynamic forces, the wing is subject to external loads and generates shear, bending moments and torques in the peach-wing structure, forcing the wing to bend vertically and parallel to the plane of the wing and rotate about its own axis Reverse, resulting in the corresponding deformation. As much as the wing force components, is to be able to withstand the role of these internal forces without causing excessive deformation. That is to say, the force components of the wing should be able to transmit the external load to the fuselage (support structure) with sufficient strength and rigidity. The wing structure to participate in any of this component called the main force components;