What you have seen so far in this module is the external loads that are acting on aircraft and spacecraft and how they are introduced into the internal structure. These loads will introduce stresses, strains and deformations in the structure.

To create an environment that is comfortable and safe for the passengers and crew flying at high altitude, the aircraft cabin is pressurized. In this lecture, we will take a closer look at an aircraft under pressurization and how this loading case translates into stresses and strains in the fuselage. You will also learn some basic rules for the required thicknesses of the fuselage shells.