The structural behavior and safety of a static load test fixture for a pylon and an external fuel tank of a fixed-wing aircraft currently being developed in South Korea are analyzed. The test loads are calculated via the flight loads applied on the external fuel tank and a whiffletree configuration; subsequently, they are used in the static analysis of the test fixture using the finite element method. Vulnerable components of the test fixture are identified by calculating the von Mises stress, and detailed structural behavior is analyzed. It is confirmed that most components of the test fixture exhibit a factor of safety of 3.0 or greater, which is determined by the calculated von Mises stress and the yield strength of the material. The proposed method is expected to be utilized in the structural integrity evaluation of a static test fixture for the external stores of an aircraft.

分析了韩国目前正在开发的固定翼飞机挂架和外部油箱静载测试夹具的结构行为和安全性。测试载荷是通过施加在外部油箱上的飞行载荷和 whiffletree 配置来计算的；随后，它们用于使用有限元方法对测试夹具进行静态分析。通过计算 von Mises 应力来识别测试夹具的脆弱组件，并分析详细的结构行为。经证实，测试夹具的大多数组件都表现出 3.0 或更大的安全系数，这是由计算的 von Mises 应力和材料的屈服强度决定的。