Problem$-1$ points$)$:

A multiple$-$stringer cantilever wing is shown in Figure $1.$ The external air loads acting on the larger cross$-$section

of the wing creates the following shear force and bending moment:

Shear force, $S_z=5$ kips, acting upward at stringer $(8)$

Bending moment $M_x=1\mathrm{.}5$

kips.in about x$-$axis

Table$-$A gives the stringer areas at stations $0$ and $150.$ Assume stringers have linear variations in area between

those two stations.

Calculate the following:

Part$-$A:

a$.$ Axial loads at station$-150.$

b$.$ Shear flows at station$-150.$

Part$-$B:

Add an internal web of $0\mathrm{.}04$ in thickness connecting stringer $(3)$ an $(8)$ and calculate the following:

a$.$ Axial loads at station$-150$

b$.$ Shear flows at station$-150.$

Part$-$C:

Compare your results of Part$-$A and Part$-$B and explain your results with proper reasoning $($example: if you get

same results, explain why same and if you get different results, explain why different$)$

Note: You can create a table to organize some of the calculations

TABLE A

Wing Tin

Figure. $1.$ Multiple$-$stringer cantilever wing