ENVELOPE STRUCTURE OF HIGH ALTITUDE PLANE

摘要

PURPOSE: An envelope structure is provided to prevent the sudden inclination of helium and the large change of a helium volume ratio by a simple structure. CONSTITUTION: A front partition(2) and a rear partition(3) divide the inside of a plane(1) to three parts. Separating films(7,8,9) are installed in the center of the front partition and the rear partition. A front helium envelope(4), a middle helium envelope(5) and a rear helium envelope(6) are divided in the upper part and a front air envelope(10), and a middle air envelope(11) and a rear air envelope(12) are divided by the separating films. Thereby, the sudden inclination of helium and the large change of a helium volume ratio are prevented.