Airplane Tech Talk for the Non-Technical: Cabin Pressurization

Another in my occasional series demystifying the inner workings of airplanes. This week – cabin pressurization. As most people know, modern passenger planes are usually propelled by turbine engines, and usually fly at around 35,000 feet. As we go up in altitude the air becomes progressively less dense. What we Earthlings call “air” is about 78% nitrogen, 21% […]