Question 23.1: The wing section shown in Fig. 23.3 has been idealized such ...
The wing section shown in Fig. 23.3 has been idealized such that the booms carry all the direct stresses. If the wing section is subjected to a bending moment of 300 kN m applied in a vertical plane, calculate the direct stresses in the booms.
Boom areas: B_1=B_6=2580 \mathrm{~mm}^2 \quad B_2=B_5=3880 \mathrm{~mm}^2 \quad B_3=B_4=3230 \mathrm{~mm}^2
Table 23.1
\begin{array}{lrr}\hline \text { Boom } & y(\mathrm{~mm}) & \sigma_z\left(\mathrm{~N} / \mathrm{mm}^2\right) \\\hline 1 & 165 & 61.2 \\2 & 230 & 85.3 \\3 & 200 & 74.2 \\4 & -200 & -74.2 \\5 & -230 & -85.3 \\6 & -165 & -61.2 \\\hline\end{array}
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