Objective1: To give essential concepts of management of side wind condition during take off and landing phases
Objective2: To give ideas of critical potential critical problem of the above condition
The teaching materials will utilized to give some examples of management and critical problem of side wind condition in take off and landing phases
Figure 13 Side wind condition
30 minutes
Take a kid balloon. Blow up it until the explosion.
By blowing up a kid balloon you increase the air mass inside the balloon. For the gases lows the(thermodynamic) inside increase its values, it overcomes the external atmospheric (static) pressure, so the balloon tends to inflate. The thin container balance the differential pressure by its internal capability to withstand traction loads. When the limit traction load of the thin container is reached the balloon explodes.
Figure 19 Kid Balloon
A pressurized fuselage of an airplane flying at high altitude is subjected to a differential pressure between the external atmosphere pressure (at 10000 m is about 1/3 than at sea level) and the internal pressure (equivalent to that at 2000 m altitude). The resultant force due to this differential pressure is balanced by the fuselage skin to withstand traction loads.
So a pressurized fuselage has to be designed to withstand the differential pressure effect besides many others loads.