Discussion
A domed rear pressure bulkhead of \( 2.0 \) m radius holds back \( 55 \) kPa. The total axial load on the fuselage is nearest to
Answer: D
The load is the pressure times the projected area, \( 55\,000 \times \pi \times 2.0^2 = 55\,000 \times 12.57 = 691 \) kN. This large force is reacted as tension in the fuselage shell, and reacting it in a light structure is why the bulkhead is domed rather than flat.
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