Pressurized fuselage

Japanese: 与圧胴体 - よあつどうたい

The atmospheric pressure decreases the higher you go, so when flying in an aircraft, if you go above 3000m, your ability to fly will decrease due to lack of oxygen. Humans are also sensitive to sudden changes in air pressure. Therefore, most modern aircraft, except for simple light aircraft and helicopters, are designed to raise the air pressure inside the aircraft to a level higher than the atmospheric pressure outside while flying at high altitudes, to maintain the same pressure as at a low altitude. This is called pressurization, and the part that is pressurized is called a pressurized cabin.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

大気は高空へいくほど気圧が低くなるので，航空機に乗って飛ぶ場合，そのままでは高度3000m以上になると酸素の不足で人間の能力が低下する。また人間は急な気圧の変化にも弱い。そこで現在の航空機は，軽飛行機のうちの簡単なものやヘリコプターを除くほとんどが，高空を飛行中は，室内の気圧を外の大気圧より上げて低高度の気圧に保つようにしている。これを与圧といい，与圧する部分を与圧室pressurized cabinと呼ぶ。

出典　株式会社平凡社世界大百科事典第２版について　情報

<<: Joachim

>>: Before dawn - Yoakemae