題組內容

三、假設一機翼結構可簡化如圖三所示,其斷面(Cross Section)為均勻矩形(Uniform Rectangular),厚度為定值,當此機翼承受扭力負載 T(Pure Torsion Load)時, 請計算:

2此機翼單位長度之扭角(Angle of Twist in Radius per Unit Length)。(10 分) (註:L=120"、b = 30"、c = 10"、T= 80000 in-lb、G = 2.5x106 lb/in2