Here you have a new video explaining what is hydraulic and pneumatic.
The boeing 747 is spectacular. During the documentary he explains a large amount of information about the huge quantities of material and characteristics of this engineering work. It describes in particular the Boing 747-400, plane model called Victor X-ray. It is an airplane that has traveled more than 36 million miles, which means taking 1500 laps around the world during its 14 years of operation. His longest trip is 14 hours from Singapore with 299 passengers. These passengers consume up to a ton of food and drink during the flight The hail, the fatigue of the materials, the collision with birds, are some of the causes that can cause wear or breakage of the components that make up the plane, A periodic inspections must be made to the aircraft to avoid aggravation. In addition, security systems such as chutes or black boxes are checked, since they are systems that, although they are not used, must be operational at all times. Every 6 years, an exhaustive check called D c...
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