Glass of double deck of installation of door of window of plane engine room basically is the adverse effect that avoids cold air. Plane altitude flight, difference in temperature of machine inside and outside is quite big, if window door installs a glass only, glass became partition of airy of cold heat of plane inside and outside, lunt of the airy inside engine room is about to coagulate on glass small drip, affect the temperature inside engine room. In the meantime, a glass is put in aperture, cold air comes in to affect the temperature inside engine room likewise ceaselessly through aperture in a steady stream. If contain two glass, there is the air that conducts heat not easily to do secondary floor among, engine room resembled wearing a cotton-padded clothes, suffer no longer outside the descent of cold air.
